SPARK PLUG HEAT RANGE TEST-JUNKYARD LS. HOT PLUG v COLD PLUG-DOES IT MATTER? TAPERED VS GASKET PLUGS

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  • Опубликовано: 22 дек 2024

Комментарии • 325

  • @crushthequarter6863
    @crushthequarter6863 2 года назад +13

    I think your tests and shared data is invaluable. I personally appreciate it. Keep it up.

  • @tturi2
    @tturi2 Год назад +1

    I love your sense of humor in some of these videos

  • @orangetruckman
    @orangetruckman 2 года назад +6

    Here’s something I haven’t seen you test and since you’re on a sparky topic, it’s pretty suiting. How much does an MSD box really add to power? Regular ignition, then one with an MSD 💁🏼‍♂️ that’d be an awesome. Thank you for everything you’ve done and continue to do sir!

    • @richardholdener1727
      @richardholdener1727  2 года назад +8

      IT ADDS NO POWER IF YOU HAVE SUFFICIENT SPARK TO ELIMINATE MISFIRE-IT ADDS POWER IF YOU CURE MISFIRE

    • @Redlineracing91
      @Redlineracing91 2 года назад

      @@richardholdener1727 how do I email you for possible testing 😎

    • @orangetruckman
      @orangetruckman 2 года назад

      @@richardholdener1727 You the man!

  • @powellsautomotive61
    @powellsautomotive61 7 месяцев назад +1

    Just about any question I have with the LS engine. This guy has an answer. Thank you so much

  • @8bigjay8
    @8bigjay8 2 года назад +8

    Crazy how engine style changes results. I went through 3 heat ranges and exposed electrode on my 496 and it made best power with the hottest plug that was exposed.

    • @davelowets
      @davelowets Год назад +2

      Totally depends on chamber design, engine efficiency, and whether your combination of parts work correctly together or not. You may have needed a better ignition, or perhaps your cam wasn't a perfect grind for the rest of your engine, carbed vs EFI, the exhaust system, intake design, and so on.
      I would hope that the G.M. LS line of engines has improved a bunch since the days of the big blocks.

    • @frosty9595
      @frosty9595 3 месяца назад

      A very old carbed engine does not have good control of fueling or atomization. That's why they ran huge gaps back then.

  • @BOOT
    @BOOT 2 года назад +10

    The old rule of thumb I herd was every 100hp over stock go one step colder. Also one colder for hotter ignition, think MSD even says to go one colder for their CD boxes. Of course those are general guidelines and some situations may be diff. And of course of course, colder for higher compression. I still think all your recent plug test show how Good modern EFI, ignition or even head design is.

    • @goratgo1970
      @goratgo1970 2 года назад +3

      Agree, my crate 502 with DUI dist. and MSD 6a liked a slightly colder plug.
      Going with TStorm charger and MSD dist. and going to keep as is before I step
      to colder plug to see if it improves.

    • @blow0me
      @blow0me Год назад

      Hard for that to work....stock say 400hp, 5/6 heat range ? So if say only 1200hp.....plugs 8 ranges cooler don't exist, and certainly are not needed.

    • @BOOT
      @BOOT Год назад

      @@blow0me Search "rule of thumb" & "general guidelines", then maybe re-read my post. Power adders are another factor

    • @davelowets
      @davelowets Год назад

      @@goratgo1970 Definitely start with a cooler plug if you add boost. Detonation easily can become a problem with boost and too hot of a plug.

  • @Fiftyshadesofbeige
    @Fiftyshadesofbeige Год назад +6

    A dyno test of coils would be interesting. D585 heat sink coils vs square coils vs Ls3 style coils. It’s a deep rabbit hole I went down when I had a 585 die and considered best replacements.

    • @blow0me
      @blow0me Год назад

      585's are overhyped and over-rated.

    • @GETLITUP69
      @GETLITUP69 Год назад

      Agree. Also spark plug test on motor with 12.0 comp..6.2. Heads cam...not a small 5.3

    • @blow0me
      @blow0me Год назад +1

      @@GETLITUP69 likely make zero difference too

    • @saab9251
      @saab9251 Год назад +1

      If you currently have enough spark to ignite the chamber fully, changing to a “better” coil won’t do anything. People don’t realize that on old school SBC’s with distributors and msd boxes they’re easily turning 9000+ rpm in some applications with ONE coil. With multi coil setups, each coil has 1/8 the workload and has to fire at 1/8 the speed of a single coil application. As long as it has enough dwell time before having to discharge, it’s doing its job to the needed standard.
      The easy way to look at it like asking will a stock fuel pump, a walbro 255, or a 450 make the best power on a stock 5.3? Pumps make zero difference once you’ve met the needs of the rail and system flow.

  • @cheaptick
    @cheaptick Год назад +3

    A hot plug isn't a hot spark... you learn that with different fuels like natural gas or Propane. Gasious fuels act differently than vapor fuels. Would be interested to see testing around this.

  • @michaelblacktree
    @michaelblacktree 2 года назад +4

    In my experience, the gasketed plugs are less likely to break off in the head. So I prefer to use them, when possible.

  • @keithdawe4866
    @keithdawe4866 2 месяца назад +1

    Thank you for taking the time to make the video. Very educational

  • @maxhorner2409
    @maxhorner2409 Год назад +1

    Thank you fer testin this. So go with what works and does not foul.

  • @karlsracing8422
    @karlsracing8422 2 года назад +3

    Richard holdener crushing myths and legends.

  • @theshed8802
    @theshed8802 2 года назад +6

    In my opinion, and in my experience, once you have the correct heat range for what you are doing, unless you have an A/F ratio issue around the plug, electrode position isn't really important. However, spark energy is always important. But once you have enough spark energy, more doesn't make much difference, and large excess only hurts reliability. Threads are threads. Gasket or taper seat, is really a packaging issue, which is why we don't see 18mm spark plugs any more.

  • @brandonrohrer7914
    @brandonrohrer7914 2 года назад +22

    It's the government it always has been

    • @jonathancorbett5917
      @jonathancorbett5917 2 года назад +6

      You haven't been on this channel very long because we all know that squirrels aren't real

    • @177SCmaro
      @177SCmaro 2 года назад

      Lol, governments have only existed for around 5000 years. They're relatively a recent concept.

    • @hondatech5000
      @hondatech5000 2 года назад

      It’s the rods right? It’s always the rods…

  • @nomercenary5280
    @nomercenary5280 2 года назад +10

    Ive always thought it would be cool to see a video on a stock engine, then adding say headers/intake/etc untuned, then tuning it and seeing the difference tuning makes and why it's really necessary.

    • @cuzz63
      @cuzz63 2 года назад +1

      we have been seeing that it doesnt make as much difference as you might think. a wilder cam will make more difference though.

    • @NightWrencher
      @NightWrencher 2 года назад +1

      He actually does have videos on that. Theyre older but theyre there

    • @richardholdener1727
      @richardholdener1727  2 года назад

      WE DON'T DO UNTUNED! I DON'T RUN THE STOCK ECU WITH A MAF THAT MIGHT HELP SELF TUNE SOMEWHAT

    • @DarkLinkAD
      @DarkLinkAD 2 года назад

      The biggest night and days are with the transmission tuning, assuming its an older Auto 4l60 4l80. Torque managment IIRC.

    • @michaelgarrow3239
      @michaelgarrow3239 2 года назад +1

      He does that like everyday…

  • @gregorykusiak5424
    @gregorykusiak5424 2 года назад +3

    Resistor vs non-resistor plug test please

  • @pb68slab18
    @pb68slab18 2 года назад +2

    Used to go thru that 'heat range' plug noise with Harleys. Their plugs were made by Champion, which I never liked. I always ran Autolite 4275 (short reach) or 4265 (long reach) and never had any issues.

    • @davelowets
      @davelowets Год назад

      What "heat range plug noise" issues were you having?? 🤔

  • @zachkearse
    @zachkearse 2 года назад +2

    I'd love to see how much difference using a anti fouler spacer makes

  • @chehystpewpur4754
    @chehystpewpur4754 Год назад +1

    as for gasket plug vs taper seat. its all about head design. best seal to the chamber. the more the plug protrudes the more it gets in the way flow atomization and piston contact or valves. you dont want it recessed in the threads either just barely in the mix.
    heat range on plug on the other hand is always application specific but alot of people seem to have it mixed up too. it comes down to what your doing. think of your spark plug as the source of your ignition. think of a glow plug in the same sense. good luck firing most diesels without the glow plugs when its really cold.
    now think about your fuel injector as also a source for your ignition. trust me it helps the correlation as you need both of these things at the right time.
    fuel timing is important so this is why spark plugs have heat ranges. say you get fuel early. a hotter plug will help burn the fuel better as it wont atomize well and be more like droplets.
    with a higher compression motor less heat is needed as heat and the compression will auto ignite the charge and cause detonation.
    in a 2 stroke application you still only have 2 ignition source per revolution of the crankshaft on a single cylinder. yet 2 strokes usually run hot plugs. they have expansion chambers and scavenge and reburn the previous air/fuel charges that already went through the combustion chamber. hot plug will keep reaction going better and compression is usually low.
    things being said in the 2 stroke field the amount of the electrode sticking out is becomming more important as comp ratio rises. head gaskets are going away and squish bands are much better tech. it actually changes the flame front and ignition comes more from the edges of the cylinder than the spark plug once the engine warms and makes a ton more power and yet again raises safe compression ratio.
    cylinder designers design the head for certain plug and you run said plug. its in the right spot plays nice with the fatty pipe and stays out of the way when the magic happens.
    changes like that allow a tiny single cylinder to make 17-20 hp reliably and run pump gas. with a 15:1 compression ratio. you know engines you know thats alot of comp for pump gas. keep in mind its also not big cc cylinder its only 70cc technically really 68cc. these guys run a "squish" of .7mm you can increase or decrease squish to change compression and flame front characteristics but power suffers obviously. that .7mm is piston to cylinder head clearance you dont get much wiggle room and you have to always be careful when making changes. failure could be catastrophic for many reasons very easily. this one launches at just over 10k rpms and accelerates around 10,800 rpms until the ignition system cuts out at 12k rpms. it hits around 70 mph before the cvt hits its final gear and the rpms climb from its acceleration rpm. with a different exhaust i can raise the engines usefulness to around 14k rpms atleast 13k with a slightly weaker exhaust that also comes in at a lower rpms too so i can have more power everywhere.
    if i were to raise my power band i cant use longer plugs as the plug could contact the piston under heavy loads. things stretch under crazy high rpms high heat or major forces. always pick your parts not parts off a shelf.

  • @supermotodan7046
    @supermotodan7046 2 года назад +3

    The only thing I haven’t seen you try for spark plugs is the surface discharge plugs like brisk makes. Ngk also makes those style plugs and Indy and formula 1 and the motorcycle racing world exclusively use them. I would think there must be something to those if the oem race teams are using them.
    I’ve had fouling on long cruises on 9 heat range ngk plugs in my stroker nitrous ls1.

  • @markbulva4188
    @markbulva4188 2 года назад +3

    Depends a lot on coolant temp also.

  • @einstein3509
    @einstein3509 2 года назад +1

    A buddy of mine, who builds and tunes engines and loves data. had a 383 on the Dyno used NGK plugs, and then switched to the Autolite same heat range with the ground strap cut shorter, and they gain 6 hp on the Dyno.

    • @davelowets
      @davelowets Год назад

      The NGK plugs must have been fouled out then... I use those same cut back Autolites in my 730h.p. 547" big block, and I can switch to NGK and gain/lose nothing at all. The Autolites DO however last longer for me than the NGK's

  • @wscap4576
    @wscap4576 2 года назад +1

    Cool. Tyvm Richard

  • @yunoguy2498
    @yunoguy2498 2 года назад +1

    Try doing a test with some of the old anti-foulers and see how much power the cost

  • @mattleonard5268
    @mattleonard5268 3 месяца назад +1

    I think this series of spark plug videos you’ve done on the Ls have shown and proven that Ls motors don’t really care what spark plugs you put in or how you put them in as long as they work and I think this is because the Ls has such a good ignition system.

  • @blainesnider9089
    @blainesnider9089 2 года назад +4

    We should do this test on an older carb and points and HEI setups.

    • @NightWrencher
      @NightWrencher 2 года назад +1

      It wouldnt change anything

    • @blainesnider9089
      @blainesnider9089 2 года назад +2

      @@NightWrencher I think you are not correct. The spark is much weaker

    • @NightWrencher
      @NightWrencher 2 года назад +1

      @@blainesnider9089 heat range doesnt affect max timing. The only time you would go with a colder plus was if there were signs of detonation. You go with a hotter plug if it fouls too easily. Neither of those situations affect max timing.

    • @blainesnider9089
      @blainesnider9089 2 года назад +1

      @@NightWrencher wasn't talking about heat range only the entire test sequence that was done on the LS

    • @NightWrencher
      @NightWrencher 2 года назад +1

      @@blainesnider9089 if you did this test on a sbc on points, the results would be the same. Spark quality is not affected by heat range. Now, if we are talking about spark gap, there is a difference and he has a test on it

  • @martinp8427
    @martinp8427 Год назад +2

    Great video, Richard!
    I really like your spark plug videos, they give us valuable data that most of us don't have access to.
    I would love to see you testing different kinds of spark plugs that utilize the principle of surface air gap. Plugs such as Bosch Platinum Fusion, Brisk Premium Evo/ Premium LGS/ Premium ZC/ZS, Beru Ultra X PLatin and so on.
    Hope you'll have time to test them and make a video!
    Best regards.

    • @richardholdener1727
      @richardholdener1727  Год назад

      don't look for any significant power in plugs unless there is a misfire

    • @davelowets
      @davelowets Год назад

      @@richardholdener1727 Right on....

    • @martinp8427
      @martinp8427 Год назад

      @@richardholdener1727 Thank you for replying.

  • @TheManFrayBentos
    @TheManFrayBentos Год назад +1

    I tried some projected nose plugs on my old Suzuki air-cooled four-cyl engine and noticed a very slight improvement in idle smoothness, and perhaps a little bit of extra perkiness on take-off, but nothing that would probably show up on a dyno.
    I'm not too bothered. A little improvement building upon another little improvement helps, though.

  • @Vanessinha91Pucca
    @Vanessinha91Pucca 2 года назад +3

    I remember on my flex fuel (stock) i set a colder plug to use only ethanol. The car felt way different on lower RPM with load. Felt lazy to rev.

    • @superjervis
      @superjervis Год назад

      tuning issue?

    • @Vanessinha91Pucca
      @Vanessinha91Pucca Год назад

      @@superjervis Not really, felt more as a dirt spike plug, you know? When the tunning it self is there but it's a burning issue at lower to mid RPM

  • @fbombcamaro434
    @fbombcamaro434 Год назад +1

    Maybe some video what does make a difference?

  • @jeffburtonnottheracecardriver
    @jeffburtonnottheracecardriver 3 месяца назад +1

    Isn't misfiring taken out by computer adjustments, so the only way to tell is to "view" what adjustments are being made with an analyzer or expensive scanner?

    • @richardholdener1727
      @richardholdener1727  3 месяца назад

      misfire isn't taken out by computer (that happens in the) chamber

  • @QuicKurtZX14R
    @QuicKurtZX14R 2 года назад +6

    Colder plug definitely costs mileage some. Have tested this on a stock (with bolt ons and tune) street driven 6.0

    • @davelowets
      @davelowets Год назад

      Then its too cold for your application.

    • @QuicKurtZX14R
      @QuicKurtZX14R Год назад

      @@davelowetsI know this, but it's suggested to use a 1 step colder plug to lessen the chance of pinging or detonation from the heat. The lower MPG confirms both our thoughts. Mainly suggested for racing or hard running.

    • @imadude85
      @imadude85 18 дней назад +1

      I can attest to this, changed to colder plugs and got slightly worse gas mileage. But on the other hand, I can pull at higher gear at low RPM without my engine making that crackling sound. It was making that noise with the previous stock (worn) plug.

  • @utahcountypicazospage5412
    @utahcountypicazospage5412 2 года назад +2

    Hotter plugs work well on carburetor cars after a good tune with proper jets/rods one step hotter keeps the plug cleaner also helps acceleration or tip in

    • @davelowets
      @davelowets Год назад

      Not if it causes detonation, or pre-ignition...

  • @tonyfinaldi737
    @tonyfinaldi737 Год назад +1

    Iv noticed that my 2019 2500 silverado 6.0L pings often with the stock plugs and I can feel the computer taking out timing out. Im thinking about getting a colder set to help and go back to hotter plugs once then engine starts to burn oil. You should see if you can make table changes with different heat ranges to see the effects. Like if you can run more timing on colder plugs.

  • @Jim_Lawrence
    @Jim_Lawrence 2 года назад +2

    I run Beru ZD-11 without issues. They either work or they don't.

  • @Eqium
    @Eqium Год назад +1

    we used to run a small block Pontiac 312ci with 13-1 compression on methanol we used washers on our plugs more so for clearance and which way the tips were facing so they didnt hit the piston we did all these dyno tests on it and we found absolutely no loss or gain from them including temp of plugs there was nothing in it we just ran what type worked better for the compression ratio and fuel the only thing we saw the hotter plug started up easier on methanol

    • @davelowets
      @davelowets Год назад

      Pontiac engines dont have a "big block" OR a "small block". The block sizes are all the same from the 301 on up to the 455. 😕
      Also, the heat range of the plug will make ZERO difference to the way an engine "starts up".

  • @johnpittman7928
    @johnpittman7928 2 года назад +1

    I’d like to see a test for if there is a power difference with decapped fuel injectors???

    • @davelowets
      @davelowets Год назад

      Only if your engine needs more fuel than a capped injector can provide.

  • @DJ_Driven
    @DJ_Driven 3 месяца назад +1

    I watched all your spark plug test videos. Why don’t you try another platform like an evo 8/9 or STi that’s boosted with some performance mods and do another round of comparisons?

  • @karlsracing8422
    @karlsracing8422 2 года назад +3

    What about electrode cutting back?

  • @bobroberts2371
    @bobroberts2371 2 года назад +1

    Possible spark plug tests:
    Use " oil foulers " on a good motor. Those spark plug extensions that pull the plug away from the head to increase heat range and the small hole shrouds the plug from liquid oil. )
    Does a double ended coil ( waste spark ) affect power due to: Spark occurring in the exhaust stroke / spark jumping from the center to strap on one plug and strap to center on the other plug.
    An easy way to test spark jumping direction power would be to use one waste spark coil per cylinder and install a dummy plug on the unused end.

    • @davelowets
      @davelowets Год назад

      I would say "No" to the direction the spark jumps the gap.

  • @jimgee2676
    @jimgee2676 2 года назад +2

    i have a 1070 318 la engine , i used to run rn14yc and autolite 66 and they both ran the same then i put in a set of ngk gr4 platinum plug and the engine began to run lean and no more raw fuel smell out the tailpipe ...what do you say i should do ,,,keep the platinum plugs and richen the mixture a bit or go back to the coppere plugs and lean it out a bit

  • @nathansumerlin8391
    @nathansumerlin8391 2 года назад +2

    Its always a cool test. But do all of these tests on a high compression combo and the results might change.or an older school motor with lower power ignition! The ls-ish ignition is rather good and is masking some issues guys have with plugs. I have a sbc combo that was sensitive to gap and heat range on the street, the better hvc msd coil solved that issue, and have been trying more gap to test, but some cylinders had issues with over .040 gap and 100 miles on the street, even a lean tune. The better coils allows a richer tune and no plug issues after 1000’s of street miles.
    It might be interesting to test this on and older simpler motor to see what happens.
    I did plug testing on around a 100hp banshee on the dyno and plugs and gaps were worth 10hp, and another banshee gained 20hp with a different ignition box
    I think these tests might be more interesting now on a boosted motor

    • @richardholdener1727
      @richardholdener1727  2 года назад +2

      plugs and gap worth 10 hp on 100-hp motor?

    • @nathansumerlin8391
      @nathansumerlin8391 2 года назад +2

      A methonal 2 stroke, factory ignition, 443cc. Yes and even fresh plugs gapped to .018 would lose 5 hp after 5 runs, and a fresh set would restore power. And the same motor hated a different cdi box, and another love that aftermarket box and hated the oem. A larger motor on methonal with the same ignition was not gap or plug sensitive but was cdi box sensitive. It lost 10hp with the same ignition on rhe larger motor, but gains 10hp on top Of rhe the old motor peak, and regained almost 20 hp frame a cdi box change, the exact same cdi box lost 1.5 hp. From the old comb!
      It can be crazy on rhe edge!
      I bet if you tested a 1000hp turbo 5.3, the plug gap may be worth some hp

    • @nathansumerlin8391
      @nathansumerlin8391 2 года назад +1

      Still love the test! If things are working, no reason to change. Your test kinda proves the need for a good ignition, it’s way less sensitive to other factors!
      I had a and msd plug boot issue that would sometimes allow the boot to slightly pop off and cause a misfire, three new plug wires ended up fixing that issue, I bet most old “issues” are ignition quality related, but it might be a cool test, an eBay hei vs the world!!! Lol

    • @davelowets
      @davelowets Год назад

      I don't buy the 10h.p. claim either, unless the plugs were defective to begin with.
      The 20h.p. from a different ignition, no way, unless the box had a radically different timing scheme in it that the other one did not.

    • @nathansumerlin8391
      @nathansumerlin8391 Год назад

      I tried several new plugs with the same results. When you’re at the limits of an ignition there are big changes From small changes. This test is on a mild combo with a good ignition the test woul be interesting on a motor with boost, if he ran .100 gap on the Big Bang engines there is a good chance tightening up the gap it’s worth a bunch of power..

  • @pjburges
    @pjburges Год назад +1

    I listened to the whole video and have a question. What would happen if you played with the timing in these tests? Could you get a little more timing into a cold plug, or would knock be a little more forgiving on a cold plug? I've heard a lot of tuners make the comment that running a TR6 NGK plug vs the stock TR55 makes it a little easier to tune and dial in the engine because the knock resistance being a bit better makes it more forgiving. Nobody ever makes the comment on if more power can be milked out of one over the other though. In my example there we are talking N/A engines and only one heat range of shift, which is pretty minimal. Though it is interesting I hear that just with one heat range colder than OEM there is a measurable difference in knock resistance. I would love to see you test knock/timing impacts on an LS motor vs heat range.

  • @v8vega355
    @v8vega355 Год назад +1

    Any videos on recurving a distributor by chance?

  • @michaelspiering7585
    @michaelspiering7585 2 года назад +2

    While on the subject of spark plugs, how would the difference between a extended tip and a standard plug? For example, a champion n5c and an n4yc?

    • @michaelspiering7585
      @michaelspiering7585 2 года назад

      Nevermind, you already answered that. It's not going to make any difference.

  • @MasterWitchDoctor
    @MasterWitchDoctor Год назад +1

    On my 1985 GPz 750 turbo I had to increase the heat range 2 numbers because above 8500 rpm the boost blew the spark off the plug like blowing out a candle. I used an MSD ignition and coils and Nippondenso 16 copper core plugs and started exploding turbos because the impellers were spinning so fast oil wouldnt stick to the bearings and theyd lock up and explode. Terry Kizer put a Torringinton 2 stage bearing in a turbo and that made my engine live till 4th gear, the turbos exploded under boost in 3rd before I had the new bearings. I was putting 52 psi at the intake valve @ 12,000 rpm and my engine liked hotter plugs and VP C16 fuel.

    • @richardholdener1727
      @richardholdener1727  Год назад

      just say no to hotter plugs on a turbo and bring the plug gap down-you won't blow out the spark

    • @connor3288
      @connor3288 Год назад

      How much wheel horsepower? Turbo bikes are badass. Stock turbo? Sounds like maybe turbo overspeed failure.

  • @turbosupra2jzdragracingtob249
    @turbosupra2jzdragracingtob249 Год назад +1

    I would like to see a test of coils… target a rich afr on both and see if a better coil ignites a rich afr better and makes more power.

  • @sanger440
    @sanger440 2 года назад +1

    How about testing resistor vs non resistor plugs with the Holley EFI. Do non resistor plugs with stock ls coils on a Holley EFI cause issues due to electrical noise (RFI?) ? Inter webs have varying opinions on this.

  • @nonyayet1379
    @nonyayet1379 Год назад

    i left a comment, actually more of a question, on a 10 month old video.
    I don't know how far back you on to read comments.
    those answers will not just suit me, but suit nearly every 5.0 efi sbf being built for street application. granted, a lot of folks won't be able to afford the heads, likewise adding that to the answers, might be helpful for a lot of your viewers (in addition to the questions i asked).
    the title to the video i left it on is:
    HOW MUCH POWER IS A 5.0L CAM SWAP WORTH? WHAT IS THE BEST CAM FOR MY 5.0L 302? 5.0L FORD EFI VS CARB
    much appreciated, yer one damned fine fella.
    (as is most of the west tech folks)
    (back in the late 80's, early 90's, absent westech i had to run hard up n down the hill to big bear to test my upgrades!! (those where the days).
    no longer out there thou.... I headed east eventually... (that elevation change tells a lot of secrets with performance)

  • @bluegizmo1983
    @bluegizmo1983 2 года назад +2

    This is one of those things that most people would never benefit from, but became a myth after awhile. "If you run cooler spark plugs you'll gain some power!". It's just not true for most situations. Yes, if you are running lots of boost and your running hot plugs, you probably WILL see a power increase by switching to cooler plugs, but it's because you were using the wrong plugs to begin with, and that doesn't mean everyone else should change to cooler plugs as well.

  • @chriswaits7697
    @chriswaits7697 Год назад +1

    I'd be really interested in seeing a performance shootout on lowbuck wires (AC DELCO) VS some high dollar name brand wires to see if there was a significant increase in performance.

    • @richardholdener1727
      @richardholdener1727  Год назад +1

      THERE IS NOT-UNLESS MISFIRE OCCURS

    • @chriswaits7697
      @chriswaits7697 Год назад

      Thanks man! Just bought my first hot rod (49 ford) and I've learned A TON of stuff from your channel!

  • @scottallpress3818
    @scottallpress3818 2 года назад +1

    Test massively long plugs vs short ….. you mentioned about the static compression change in this vid .

    • @jimw8016
      @jimw8016 2 года назад +2

      I've tested short plugs vs long on a sbc 355. on an aluminum head designed for long plugs,(typical ls plugs), DONT use short plugs like r44ts. It's like reducing displacement from 355 to 55! HUGE losses everywhere. WASNT intentional but that's the result. I presume because the plug was recessed so far in the plug hole it took way too much time to ignite the a/f mixture.

  • @Okiefreedom
    @Okiefreedom 2 года назад +1

    I run ngk 7's on my hot NA motors and ngk 4's on stockers

  • @zachkearse
    @zachkearse 2 года назад +1

    Also what effects would the anti fouler spacers have on a boosted application.

  • @el_txserpico4501
    @el_txserpico4501 2 года назад +1

    Love the videos, i sm seeking a rebuild recipe for an original L31 in my 98 chevy c1500. I been contemplating 383 / cam / heads rebuild as a daily driver on a budget. Any recipes you can offer are greatly appreciated

    • @richardholdener1727
      @richardholdener1727  2 года назад

      383, small cam, home ported vortec heads, dual plane, 750 carb, headers

    • @el_txserpico4501
      @el_txserpico4501 2 года назад

      @@richardholdener1727 thank you! I want to keep it TBI . Also what are good rebuild / stroker kits (brand ) to rebuild with on a budget? As for cam I have heard LT4 and even ram jet cams are good for daily driver

  • @alanwrenchgarage
    @alanwrenchgarage 2 года назад +2

    Of course you do

  • @EpicScandinavian
    @EpicScandinavian 2 года назад +1

    Is there any sparkplug that has a measurable effect on compression ratio/ combustion chamber volume?

  • @zoomer3drey
    @zoomer3drey 2 года назад +1

    I always wondered different ring gaps vs different boost! Power outcome

    • @davelowets
      @davelowets Год назад +1

      No difference in power, but it'll sure keep from popping the top of the ring lands off the piston with the correct ring gaps. The correct ring gap size vs bore size vs boost level will ultimately keep the ring gaps ending up the same under the expansion from the heat.

    • @zoomer3drey
      @zoomer3drey Год назад

      @@davelowets make sense! (:

    • @zoomer3drey
      @zoomer3drey Год назад

      @@davelowets is there a formula for prefer ring gap and boost, bore size?

  • @rolandotillit2867
    @rolandotillit2867 2 года назад +2

    How about running non-foulers on the plugs with some(4) 1.5mm holes drilled out the side?

    • @hondatech5000
      @hondatech5000 2 года назад

      Holes in the nonfouler that would be cool if the engine runs you could see how long it takes before it catches something on fire :p

    • @rolandotillit2867
      @rolandotillit2867 2 года назад +1

      @@hondatech5000 It's basically what F1 engines are doing, along with the Maserati MC20. It's just a cap over the spark plug with 1.2mm holes drilled in. Natural gas engines use the same thing. It's called a passive pre-chamber. Of course, things like timing, and AF ratio would have to be tuned to work with it.

  • @button-puncher
    @button-puncher Год назад +1

    Best bang for the buck coils? D585 "heatsink" coil still the best? Test them under high boost and/or wide gap. Can you log coil voltage and current?
    Solid vs resistive wires? (EMI from solid wires can mess with crank/cam VR signals.)

  • @bartbarnett2811
    @bartbarnett2811 2 года назад +2

    So I run an extremely high compression for running on pump gas. My compression ratio is 12/1 ish that number doesn't really matter what matters is compression test 265 PSI. And I've had a problem before with cheap spark plugs that had a little sharp piece of metal on it and caused detonation issues. What I want to know is if you were to polish the spark plugs smooth and point the gap. Could you in theory get one or two more degrees of timing gaining just a few horsepower. I'm thinking maybe even squeeze an extra 10 out of it

    • @ChroniclesofKToyoda
      @ChroniclesofKToyoda 2 года назад +1

      It would be nice if he played with timing during these various spark plug changes, but he's responded to me earlier saying it's not necessary as if detonation characteristics don't charge🤷🏼so yeah

    • @richardholdener1727
      @richardholdener1727  2 года назад

      the plug does not change the chamber design-timing requirement is the same

    • @davelowets
      @davelowets Год назад

      If you're buying plugs that have random sharp pieces of metal protruding from them, you had better stop shopping on Alibaba

  • @joshgunn7486
    @joshgunn7486 2 года назад +3

    Richard would these tests matter more on older engines with weaker ignition systems than modern Coil On Plug? As I understand heat range has more to do with keeping the plug from building up carbon over time

    • @mikeb7837
      @mikeb7837 2 года назад

      Or carbonated with a less than optimal combustion chamber like a flathead.

    • @davelowets
      @davelowets Год назад

      Heat range has ALL to do with keeping the plugs clean.

  • @CamaroKevin84
    @CamaroKevin84 8 месяцев назад +1

    My mechanic father of 40 years says those tapered plugs r crap. Bc u can just can not get those kinds tight enough bc u will mess up the plug thread hole on the head. Especially aluminum LS heads. I can't find a washered seat plug for my LS

    • @richardholdener1727
      @richardholdener1727  8 месяцев назад

      your father is incorrect-the factory LS plugs are tapered seat and work perfectly for 100,00+ miles at a time. You can also run gasket plugs on stock head-but it places the tip of the plug at a different position in the chamber.

  • @AdamOpheim
    @AdamOpheim 2 года назад +2

    Keep telling the folks over on the E85 forums that they don't need or want a hot plug. Mark Sullens swears there is "good power" to be picked up with a hotter plug and that they have dyno tested and proven it. I don't see how. If the plug isn't fouling, no reason for a hotter plug. Or at least that's what I believed.

  • @bdugle1
    @bdugle1 Год назад +1

    How about anti-seize on the threads? Someone recently said it’ll cause misfires due to a bad ground. I would think the ground would be made at the seat, not threads, and I’d like to be able to get them back out down the road. Anti-seize or no, Richard?

    • @richardholdener1727
      @richardholdener1727  Год назад

      yes, use anti seize for new plugs

    • @davelowets
      @davelowets Год назад

      I had heard the bad ground issue from anti-seize from a trusted dyno tuner once also. I'm not sure what to think of it. I guess it could be theorerically possible if someone slathered the plugs so full of it that it coated every bit of metal that contacted the head... 🤷🏻

  • @aphil4581
    @aphil4581 2 года назад +1

    Going to a hotter ir stock plug for better idle and longer life. The br6's seem done now after 20,000 miles. Idle is now missing a bit. Put them in with a new set of kooks headers. 2008 ls3 vette. Wanting to see if it can repeat its best 1/4 mile track times with the stock ir hotter plugs. 11.85@121.25. 65* Florida.

    • @DarkLinkAD
      @DarkLinkAD 2 года назад

      NGK coppers on a stock 5.3 are doing well, even with a smaller gap. Idle is almost too good to be true for such a high mileage vehicle.

  • @aaronburt1103
    @aaronburt1103 2 года назад +1

    It would be cool if you CC measured the cylinder heads with the tapered plug and the gasketed plug to see if that taper plug subtracted like half a cc

    • @richardholdener1727
      @richardholdener1727  2 года назад

      AGREED-BUT IT DIDN'T CHANGE POWER

    • @blow0me
      @blow0me Год назад

      there is no difference between the two for same design of plug. taper/gasket both protrude the same. I tried them in some OE heads, Edelbrock heads and TFS heads many years ago. they're just the same.

  • @camj256
    @camj256 Год назад +1

    This guy is growing on me. I just wish he was testing some of this stuff with higher boost motors making like 1000 at minimum. 1400-1600 would be nice.

    • @richardholdener1727
      @richardholdener1727  Год назад +1

      1600-hp motors are difficult to keep consistent-for plugs on a 1600-hp motor-gap is the most important thing

    • @camj256
      @camj256 Год назад +1

      @richardholdener1727 I agree. Which is why I'm here moaning about it. 1400 crank can be consistent. The game starts to change a lot much past that though. In theory a lot scales with boost so the 5.3 method of your videos works but I don't think so much with plugs. As I just trashed some plugs with holley smart coils and a low boost of 22# (for this engine). Every combo does get different as my lower compression 1800hp motor was fine with 36# and truck coils. But the monster boost heads and 11 to one on e85 had enough blowby with 2 10an breathers to shoot the rear main seal out the back and shutdown the track for 20min. I don't like being that guy and I thought I had everything in place to not be that guy. Appreciate the videos and reply. Just my 2c

    • @camj256
      @camj256 Год назад +1

      @richardholdener1727 and I know us guys running large hp probably aren't your target audience so it may not be worth your time or money to test that or risk those engines. It would be cool to see a catch can video at some point and what size is really needed and the blowthrough that can happen with larger ring gaps and running e or meth.

    • @camj256
      @camj256 Год назад +1

      I'd be willing to donate an LSX bare block to you if you use it for stuff like this. Could probably get a k1 crank and some cheaper rods and pistons if you're interested. It's sitting at ACE Engines in Torrance right now. It's been remilled and refreshed but the deck height is just slightly lower so it's going to need custom height rods because it was milled by my original builder (not going to drop names) crooked.@@richardholdener1727

    • @richardholdener1727
      @richardholdener1727  Год назад

      plugs are not usually the problem with boost-coils either-they need the dwell cranked up to 4.0-4.5-and even 1400 hp is not repeatable enough to look for small changes in power

  • @marvinsauer8493
    @marvinsauer8493 10 месяцев назад +2

    With colder plug could you sneak in a degree or two of timing?

    • @richardholdener1727
      @richardholdener1727  10 месяцев назад +1

      the heat range of the plug doesn't determine the optimum ignition timing

    • @SmokeyWire56
      @SmokeyWire56 9 месяцев назад

      @marvin, yes, and with a cold plug and hot spark, you can add more fule with those few degrees of timing giving more power. I think if the tests were done on a carb the result would be more power with the timing and fule variable. But in this test case there won't a change in power.

  • @mrrobot545
    @mrrobot545 2 года назад +1

    I wonder going from brand to brand? Like NGK to
    Denso. AC delco, autolite. Bosh etc

    • @richardholdener1727
      @richardholdener1727  2 года назад +1

      see the e3 spark plug test

    • @mrrobot545
      @mrrobot545 2 года назад

      @@richardholdener1727 I did. Another great video. How about this? I’ve been curious about say a copper vs fancy laser iridium in a turbo application. I know the K series people say iridium. Wondering if there’s a difference. Since we are on testing plugs out.

  • @lindsaymcpherson4744
    @lindsaymcpherson4744 2 года назад +1

    Great video guys ,have you done a video comparing compression ratios in a big block Chevy ??

    • @richardholdener1727
      @richardholdener1727  2 года назад +1

      no sir

    • @aphil4581
      @aphil4581 2 года назад

      With the BBC the old how to supe up a bb chevy book said to use two different heat ranges of plugs because Its port configurations are like running two different 4cyl engines.

    • @davelowets
      @davelowets Год назад

      @@aphil4581 Sorry, that's complete nonsense..

  • @nimblybimbly4002
    @nimblybimbly4002 2 года назад +1

    In a Live show a couple days ago I asked about the warning BTR has posted, in the Hot Rod camshaft kit page, not to run it above 6500 RPM. I called them to ask about it. They said it's due to the spring retainer included (powdered metal). He said using a titanium spring retainer would eliminate the cause for the warning.

    • @richardholdener1727
      @richardholdener1727  2 года назад

      why would a retainer change that?

    • @nimblybimbly4002
      @nimblybimbly4002 2 года назад

      @@richardholdener1727 No idea! The guy on the tech line said it with conviction so I assumed it would make sense to you. I'm even more interested now that you're questioning it!

    • @blow0me
      @blow0me Год назад

      @@richardholdener1727 presumably quality, strength, weight ? Maybe they think the PM might fail ? If so, not a great idea putting them out there

    • @davelowets
      @davelowets Год назад

      @@blow0me I would completely agree with that! Why put out junk that could fail like that, when a steel retainer CAN'T be that much more expensive to make. A retainer is only a few bucks to begin with. 🤔

    • @blow0me
      @blow0me Год назад

      @@davelowets Even the Ti ones aren't really that expensive. In some areas, it's just not even worth trying to skimp on costs, or create a cheaper part.

  • @luisetorres5760
    @luisetorres5760 Год назад +1

    Question: I have two cars with the same engines but one low comp supercharged and the other hi compression n/a. Sparkplugs are two heat ranges apart from each other. The question is, what happens if I use the n/a sparkplugs on the supercharged engine? Both stock cars

  • @ts302
    @ts302 2 года назад +1

    Great video series Mr. Holdener! How about resistor vs non resistor plugs? Also, when reading plugs for AF/timing, does changing heat range change anything? Thank you!

    • @richardholdener1727
      @richardholdener1727  2 года назад +1

      it should not change the timing mark on the electrode

    • @blow0me
      @blow0me Год назад

      resistor plugs should be used to help prevent electrical noise when running an EFI system

  • @rene7500
    @rene7500 Год назад +1

    I Got a question. I see you dont have an videos about 2 step so I would like to ask you can I add a MSD 2 step to my stock 4l60e ? What would be my outcome or what do you suggest I do.

  • @hondatech5000
    @hondatech5000 2 года назад +2

    How many non-foulers would it take to change the compression ratio a full point I wanna run 87 :p

  • @robertturner333
    @robertturner333 2 года назад

    What would be the difference if you were to use “race type” surface discharge etc plugs

  • @jeffburtonnottheracecardriver
    @jeffburtonnottheracecardriver 3 месяца назад +1

    Instead of power, do any adjustments to spark plugs that you have tested (electrodes, indexing,seating,etc.) have an effect on fuel burn efficiency(cleaner emissions) or fuel use efficiency(mpg)?

  • @sc_mastertech8641
    @sc_mastertech8641 2 года назад +3

    The couple times I have experimented with colder plug I end up fouling it easily and going back to what works. I thought trying it was a good idea as even though I was already one heat range colder then stock since I was adding more boost it might be a good idea, didn’t have any luck with that and haven’t had any issues making 900rwhp on a BR7ef plug.

    • @NightWrencher
      @NightWrencher 2 года назад +1

      Thats what Im running

    • @maurymoynihan5245
      @maurymoynihan5245 2 года назад

      Same 991awhp daily

    • @ummduhgmail
      @ummduhgmail 2 года назад +1

      That's the entire point of the heat range. To keep them clean. If you kept fouling them out on a good tune then they're too cold. That's it.

    • @aphil4581
      @aphil4581 2 года назад +1

      On a N/A 6.0 over bore 0.030 x 4.1 stroker @ 12.1 93 pump gas I got detonation I could hear in the summer in FL. Was ok in the winter so Br6's in winter and Br7's in the summer.

    • @saab9251
      @saab9251 Год назад

      Remember that winter and summer fuels are different and many times have different vapor pressures. This can cause this issue and I’m having the same problem in Georgia.

  • @corvettedude4423
    @corvettedude4423 Год назад +1

    Please do a spark plug side gap modification test

    • @richardholdener1727
      @richardholdener1727  Год назад

      good idea-but same results

    • @corvettedude4423
      @corvettedude4423 Год назад

      @@richardholdener1727 i haven’t seen him posting a video of that though, and can’t find anyone test it on a dyno

  • @rixxxer5460
    @rixxxer5460 2 года назад +1

    single plug heads vs twin plug heads , any difference?

  • @Sami-gs7qb
    @Sami-gs7qb Год назад +1

    Great work, as usual ❤

  • @save16thave
    @save16thave Год назад +1

    What about using iridium or platinum plugs with nitrous? I've always heard to use the cheap copper plugs with nitrous because they will melt before a piston will.

    • @richardholdener1727
      @richardholdener1727  Год назад

      the idea is not to melt the plug or piston

    • @save16thave
      @save16thave Год назад

      @@richardholdener1727 That's true, but sometimes things happen. Like a fuel solenoid doesn't open or there is a problem with an electric fuel pump or an angry ex girlfriend stuffs a sock in your fuel cell, etc.

  • @walterhcarterjr1379
    @walterhcarterjr1379 2 года назад +1

    Resistor and Non Resistor Spark Plugs?

  • @dontadeshun
    @dontadeshun Год назад +1

    What spark plug and wires combination would be good for a 07 5.3 with truck Norris cam ls7 lifters and 3/4 longtube headers need

  • @utahcountypicazospage5412
    @utahcountypicazospage5412 2 года назад +1

    This test shows how good engines and ignition systems are now

  • @loko306
    @loko306 2 года назад +2

    Great content! Is there a video testing the performance difference only by changing the gap?

    • @QuicKurtZX14R
      @QuicKurtZX14R 2 года назад +3

      Yes there is

    • @NightWrencher
      @NightWrencher 2 года назад +2

      Yeah there is. It came out a few weeks ago. Just check his videos

    • @cuzz63
      @cuzz63 2 года назад +2

      as others pointed out he did a vid...it only made much difference (power loss) at extreme gaps. too little or too much.

  • @maclogan6872
    @maclogan6872 2 года назад +2

    Dr. Richard, does the test temp of the engine influence the hot vs cold plug? Did not notice the testing heat of the engine.

  • @bobqzzi
    @bobqzzi 2 года назад +1

    I am very confused. How can you run a gasketed plug in a head designed for tapered seat plugs and vice versa? Mind totally blown

    • @Turbogto_guy
      @Turbogto_guy 2 года назад +2

      Ls engines can use either.

    • @richardholdener1727
      @richardholdener1727  2 года назад +2

      LS GOES BOTH WAYS

    • @DarkLinkAD
      @DarkLinkAD 2 года назад

      @@richardholdener1727 Que the Russian Industrial Techno, throw it in a Coube compilation with the remix.

  • @ZONES89RS
    @ZONES89RS Год назад +1

    Interesting. When I run a colder non projected plug my car is slower all motor in the drag strip.

    • @davelowets
      @davelowets Год назад

      Probably because it's fouling the colder plugs out.

    • @ZONES89RS
      @ZONES89RS Год назад

      @@davelowets nope, and it has been in several of my cars as well as my buddies.

  • @patrickwendling6759
    @patrickwendling6759 2 года назад +1

    Thx for your knowledge 💪🏽

  • @12thMonkey
    @12thMonkey 2 года назад +1

    Does the Craftsman screwdriver mod add any horsepower ?

  • @whaddayawant2197
    @whaddayawant2197 2 года назад +2

    Any testing in the future with the older ls1 coils(apparently higher spark output) vs stock 5.3 coils?

  • @awdss_silverado1449
    @awdss_silverado1449 2 года назад +2

    So I wonder if this also applies to high compression na stuff? Say 12:5:1+. I never see u do that kind of testing

  • @curlracing276
    @curlracing276 2 года назад +1

    Could you do a test on reach? Like correct thread reach and too short of a reach where the electrode/ground strap is up in the cylinder head and not directly in the chamber. Reason I ask is I’ve had people install the wrong plugs being too short and the engine still ran just would like to see what happens on the dyno. It’s a common thing on the small block ford with aftermarket aluminum heads requiring a longer reach plug and the auto parts store just gives them a plug based on the make and model.

    • @richardholdener1727
      @richardholdener1727  2 года назад

      the tapered seat vs gasket did that

    • @curlracing276
      @curlracing276 2 года назад

      @@richardholdener1727 I was looking for more than a 3/16” difference. Like the ground strap be 1/4” up in the hole away from the combustion chamber. Way too short of a reach.

    • @davelowets
      @davelowets Год назад

      @@curlracing276 There's no purpose for a test like that. It would be no different than intentionally running the wrong jets in a carburetor... Just get the right parts.

  • @dirtylsracing6475
    @dirtylsracing6475 2 года назад +1

    Have you ever done a video on throttle body size comparison on a boosted application??

    • @richardholdener1727
      @richardholdener1727  2 года назад

      yes

    • @dirtylsracing6475
      @dirtylsracing6475 Год назад

      Just a heads up some sent me a email as a reply from this video and they’re pretending to be you and it says to claim my package.
      IDK 🤷‍♂️ ??? I thought it was weird

  • @StephenGiovi
    @StephenGiovi Год назад +1

    Richard: What is the Temperature of the engine comparing different plugs? Just wondering.

  • @scottgarmon4865
    @scottgarmon4865 Год назад +1

    Only time I have run into fouling issues with cold plugs were with carb blow through engines on the streets.
    EFI has much better fueling control than carb stuff so makes sense.
    Unfortunately Tuning carburetors is a dying art.

  • @jasonbirch1182
    @jasonbirch1182 2 года назад +1

    Hey Richard, ever mess with the range Rover sport 4.2 or 5.0 supercharger? M112 I believe on both. Any idea on differences? Issues with them? I think it would rip on my motor. I can snatch up a 4.2 blower dirt cheap at the Pick-A-Part. The m90 is a bit small I think. 4.5 V8.

    • @richardholdener1727
      @richardholdener1727  2 года назад

      NEVER HAVE

    • @jasonbirch1182
      @jasonbirch1182 2 года назад

      @@richardholdener1727 sounds like a good idea for you to grab one 😁. I'll have to check 8n on the live feed to see if anyone has played with them.

  • @chrisyeahbuuwassrileegowyn9279
    @chrisyeahbuuwassrileegowyn9279 2 года назад +1

    Richard, surly these plug tests would be a lot more entertaining if you were using a 5.4 from the wrecking yard don't ya think....
    Okay...but seriously, I do think using an old single coil distributor motor might show some valid differences verses modern multi coils. That being said.
    I would not be surprised if you cut the ground electrode completely off the plugs if your test engine if it would still run surprising well..
    IDK but i'm guessing it would lose considerable power/RPM,and miss fire above 3K or so but?? Overheat and fry coils in the real world of course, but would be a cool DYNO test, or a dud🤣