How Much Power Are New Pistons, Rings and a Hone Worth?
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- Опубликовано: 17 янв 2024
- We took a NASCAR engine that had been sitting for 20 years and put it back on the dyno. Then we honed it, swapped the pistons and the rings and put it back on the dyno. Why? Because these are the kind of things we explore in the @EnginePerformanceExpo . In this video, we show you the results of this test and give you a taste of what's on tap on the Engine Performance Expo channel.
We’ve actually run this same test on two different engines, and the results were the same both times. With the old pistons, rings and hone, the engine made 730 HP with the baseline carb and fuel (32 degrees of timing). With the new rings, pistons and hone, the engine made 773 HP with the baseline carb and fuel at 30 degrees of timing.
For the complete engine build series, check out this link and follow the playlist @Stapleton42 • Lake Speed's Forgotten...
#engine #enginebuilding #blowby #horsepower #nascar 
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This is just a snippet from the Engine Performance Expo. For the full story on this engine (and it's brother), check out ruclips.net/video/WvdrNbCHJFE/видео.htmlsi=YZkWNYQ4q3l1FGt1
On our Super Stock Hemi (2004) we gained 35 H.P. going from a "local machine shop" hone job from a CK-10 to a Job from a knowledgeable shop and a CK-25 it detected "taper in the bore" and corrected for it and also the proper ring finish.
Thanks for sharing!
so you did the test on the rings, bore, piston design and coatings? then made a fuel and carb change? Why not do a more scientific back to back test of the piston / cyl changes only? its hard to validate your results here, a carb and fuel / ignition change could easily make a 10% increase alone if the thing was choked down on less than ideal fuel before...
Agreed, too many changes.
Should have added the new carb on the only pistons - then only changed pistons/rings/hone and then see the difference.
We’ve actually run this same test on two different engines, and the results were the same both times. With the old pistons, rings and hone, the engine made 730 HP with the baseline carb and fuel (32 degrees of timing). With the new rings, pistons and hone, the engine made 773 HP with the baseline carb and fuel at 30 degrees of timing.
The carb and fuel change are for the next phase of testing, which will come in a future video.
I just looked for the original video but couldn't find it in a quick scroll. The engine had stuck rusted rings with cratered bores it was dynoed and made X power. After that it was torn down a super precise hone new 1 thou over pistons new style ring package and I think it still made the same power? Can anyone find or remember that video? Going from memory it might have also grabbed one of the new pistons. Not trying to stir anything up just trying to get my recollection correct.
@@briankilpatrick6039 You might be thinking about this video, which is on the sister to this engine. ruclips.net/video/hUNuITaxQ_E/видео.html
If you had payed attention to the video they did multiple dyno runs to show the differences. Original motor first, motor with new piston and rings, then carb and fuel change.
I love the test concept - how much is the piston/ring/hone combo worth. It seems like it was spoiled by other changes. The carb/fuel change is responsible for a good portion of the gain, and I think we want to see what just the piston/ring/hone comb was worth on it's own. Surely those results are available, right?
The piston/ring/hone combo with the baseline carb and fuel produced 773 HP (with a base tune) vs 730 for the old pistons, rings and hone. The new carb/fuel/tune up was the other 18 HP.
From 733hp to 774hp with just the piston,rings and honing. Then after changing the carb and fuel, they got 791hp.
@@TotalSeal awesome. I was sure you captured that data point, it just wasn't communicated super well in the video. Maybe I missed it, but it sounds like a bunch of other people did too. In any case, love the content and keep it coming!
@@TotalSeal maybe one other thought, consider putting the power game details in the description, maybe people will find it there.
@@andrewcammer2535 Great suggestion!
I would like to see what happens on a junk yard or older SBC and do a before and after dingle ball hone and new rings! Because literally no one has a NASCAR engine just laying around. You guys have more money into the little bit of work you did on that engine than most complete street car engine builds!
well, a rough calculation being that they made 791hp up from 733 they made 58 hp, on your average SBC or other making 400+ you could expect about 30ish hp or 20 hp if your just doing piston rods and a hone, still not bad.
Most of the SBC we would tear down in late 70's early 80's had a decent ridge at the top of the cyl by 80K miles. The really cool test would be the dingle ball hone and new rings that a lot of folks did. Then do a perfect piston, ring, hone combo. What they got here was around 10% though so on an engine that makes maybe 275hp stock like those boneyard 350 SBC would on a good day might only gain 25hp ?
That engine was purchased at an Auction for less than $10k, and the total parts used in this rebuild was less than $3k.
Absolutely. Who has a "spare" NASCAR engine laying around? 🤣 Take a worn V8 engine that still runs decent and put it on the dyno. Then replace the Pistons, rings, bearings and oil pump, disassemble the heads and clean them, put new oil seals on them, with NO valve work other than lapping by hand. Hone the cylinders, and do no other machine work. Reassemble it with the original camshaft, lifters and a new timing chain. Then dyno it again and see what it does. Then do a high performance camshaft swap, with an aftermarket intake, carb and headers, and dyno it again and see what it does again.
Good stuff Lake Speed Jr!
I always look forward to seeing your new videos!
I appreciate that!
20+ yrs ago I coerced our engine shop into using the newest diamond honing technique. Our spec build and the same width rings of hone matching specs. Strictly the hone got us 11 more on a 500 hp 355 circle track engine. 👍👍👍 20+ yrs ago.
Narrow gas ported rings and coated pistons would do more.
That’s awesome. Thanks for sharing!
great content great idea
Glad you think so!
Why change carb and fuel when you were saying it was a piston comparison? We still don't know.
Watch between @1:52 and @1:54, it shows 770.2 hp. @1:58, it shows 770.1 being peak HP. And @2:21 it shows peak at 774.4 HP.
@4:00 he explains that when they ran it on the dyno after pulling it out of a 20+ year storage, it made 733hp.
So, it made 733hp on dyno out of storage, and after piston & ring change, and cylinder hone, it made 774hp on the smaller carb and regular race fuel. So there was a gain of 41hp. It's all in the video.
As mentioned in the intro, this is a segment from the Engine Performance Expo.There is a lot more to this story on that channel and the Stapleton42 channel.
All 8 pistons are the new style with the thinner rings. The baseline of 730 HP was the original full round pistons, thicker rings and hone. We made 765 HP updating just the pistons, rings and hone, but we ending up scuffing one of those pistons because we pushed the limits. This video shows how we fixed the scuffed cylinders and were able to reuse the Line 2 Line skirt coating to save 5 pistons from the first update rebuild. This time, we made 774 HP with the baseline carb and fuel. Dad's other engine made 792 HP with the bigger carb and the VP Q16 fuel. That's why we tested the bigger carb and VP Q16 fuel on this engine - it's an apples to apples comparison to the first engine, and they are within 1 HP of each other.
This is a awesome and very interesting topic I have heard for years that a guy that buys a new car could break the engine in and then take it to a really good machine shop and they would gain ten horsepower just from having the engine blueprinted I know that a lot of this is due to the block becoming thermally stable after having been heat cycled and I also know that there are methods that can make a brand new block act like a seasoned block ahead of time by sending high frequency sound waves or vibrations through the block in a fixture for many hours I think his machine is called a Vibrolax or maybe Vibralax but I assume it is a form of mechanical stress relieving the metal in the engine block using a clamping fixture that vibrates the engine block and thus relaxing or relieving any stress that might be present that would distort the machinists work after the first heat cycle had it not been removed or relaxed. There can be tons of pressure per square inch of metal in internal stresses that are there but static and then once heated they move and relax we want to do our machining on parts that are stable and won't move around though this is the whole reasoning behind this myth or real physical phenomena. A old cast iron block that has been ran out to needing an overhaul is known as a seasoned block if it has sat for 30- more years in someones garage some think this is even better too Haha Like aged Whiskey I am aware that this video is not about this topic but mainly friction reduction by using newer style rings and better designed pistons to reduce friction along with the proper cylinder preparation but this is a step in this whole ideology that I thought deserved to be mentioned
Thanks for sharing!
This is interesting because I just refreshed a snowmobile engine with a hone and pistons. The butt dyno says it perked up a huge amount. I had forgotten how hard the sled could pull. Its a 2 stroke, twin cylinder 794cc motor made by Sizuki in a 2011 Arctic Cat CF 800 H.O. that was factory rated at 163h.p. and had around 10,000 miles on odometer. It started feeling a little sluggish last spring which prompted the new Wiseco pistons. That and a quick hone was all it took to bring back the feeling of my arms being stretched every flick of the throttle.
Thanks for sharing!
Awesome 👍🤘👏
Thanks ✌️
I used Line2Line coatings on my 1995 Arctic Cat ZR 700 2 stroke pistons. You can see the build on my channel under the 95 Zr 700 build series.
Thanks for sharing!
I believe I am going to give that LTL coating a try thanks for the video. 👍😎👍
Any time!
You ain't slick,just so you bitches know.
And when I catch you you know what it is.
Nice Jesel roller rockers. I have a set on my C5R motor.
Yes they are
Great video. I'd love to see that same test on a 4.0 Jeep inline 6. Just so we know what to expect on an otherwise factory stock engine.
Thanks for the suggestion!
@TotalSeal Absolutely. Like all internet keyboard warriors, I'm filled with half-baked ideas. But I will be rebuilding the 4.0 that's in my 95 ZJ in the next few months and I would love to gather any data that I can use to assist myself on my first engine rebuild. I'll be subscribing to not miss anything in the future.
@@codered7453 Right on!
What was the power numbers BEFORE switching to the big carb and oxygenated fuel??
Watch between 1:52 and 1:54, it shows 770.2 hp. @1:58, it shows 770.1 being peak HP. And @2:21 it shows peak at 774.4 HP.
773 HP
The trouble is now, that Rottler is quite expensive, and few shops have it I would guess? Any special discussion points on the use of the line2 coating along with the surface finish the Rottler provides?
There are several shops with Rottler hones now, so it's easier to get the right hone now than you might think. Contact the folks at Rottler to locate a shop near you with their equipment.
That get’m carb! 💪🏻💪🏻💪🏻
You know it!
How much change would you guess going to oxygenated fuel by itself makes??
Do you flush the carbs afterwards to get the oxygenated fuel out of the carb before putting it away?
Thanks for this video on a cold snowy day in middle Tennessee!!
The fuel was about 10 HP. We did drain it out after we were done. Stay warm!
I picked up 6 mph just switching to Oxygenated Fuel, Went from using VP C12 switched to there MS109, what a difference !
6 mph in the 1/4 mile.
@@badass6.0powerstroke10 I started using MS109 in my car and like it. it pops real nice (throttle is so crisp). my holley 4150 runs rich, and i went with some oxygenated race fuels and can feel the much crispier throttle responses. i like at almost 5k' elevation in the dessert, so it helps me. i also like T4 fuel and ETS prodrag3. i didn't have to use any higher jets, running 84's all around. i have high desset altitude and heat to deal with.
I tried VP CHP fuel. it was good too, but hard on the fuel system so becareful, and i probably needed the 84 jets, as i was running 80s at the time
i wish i had more compression, but if your setup runs super rich, and you have access to these types of fuels, give it a shot, see how it responds
if you're running pig rich, but to lazy to rejet, swap out the fuel to something like these, and i have a feeling you'll get a smile.... (i'm not aying it's cost effective, just an option if one wants to try)
i use them because in my area NM, pump gas 91oct isn't consistent or great. car would get burbbly a lot. only fuel that was consistent was shell 91, but very expensive and hard to get (one station locally)
race fuels are awesome, sure expensive if you have to have it shipped like i do, but the tinkering i've done with it, i really like it. I don't drive the car much so cost is worth it me. next refresh i'll seriously up the compression so i can see a massive improvement using these fuels.
BTW...
a GREAT true blue printed engine will definitely make more power, of course with a matching tune, but, one must compare the costs for it. done right, with the right equipment and as with EVERY type of the service the expertise/knowledge and quality of person doing it is priceless and the big key. this is where one might say i'll go bigger bore/stroke/cubes vs paying for high dollar machine/labor. That thinking is strictly for someone with say a prostreet/street/strip type of car or need.
GREAT video BTW.....
733 to 774 is still a good increase with all the same stuff without the carb and fuel.
Absolutely!
Did you guys change the oil after the pistons were run-in, Andy at Line to Line said my oil will turn dark gray after and should change twice. I've not run the recoated Mahle slugs yet but really curious what the oil will look like after the cylinder walls shave off a few tenths of that silaca-graphite abrative coat.
We did drain the break-in oil after the first 30 minutes of run in and 6 power pulls.
@@TotalSeal Just wondering if the graphite silicates coating turns the oil black after first oil change?
Any special considerations need to be taken for the break in with the Line to Line skirt coating, as it burnishes to fit?
Yes, LTL has very specific break in instructions. Must change oil after first few minutes also.
Just take it easy on the beak-in.
@@TotalSeal Instructions at it's finest! "just take it easy" Care to elaborate? As "just take it easy" means different things to a P@rn Star and a civilian.
@@benburnett8109 They provide detailed instructions for break-in. We also have a video on this channel that shows the appropriate break-in procedure.
whats the spec of this engine Bore & Stroke.
O'boy, Top notch indeed.🤙🤙🤙💪💪
4.065 Bore x 3.440 Stroke - NASCAR 358 CI
Does adding 2 stroke oil at 0.5% ratio help with sealing the combustion chamber?
It could cause detonation. Oil typically has lower octane than gasoline.
I have tried to put TCW3 rated 2 stroke oil as upper cylinder lubricant in fuel (I use 80% 98ron (93 AKI) unleaded MTBE pump gas plus 20% ethanol(one slight perk of not being in the US) in my 2015 Ford Focus ST, so basically E20) at different ratios such as 1:500, 1:200 and 1:100. I tried to not believe 1:100 as a good mix because it’s too concentrated and really could potential cause detonation, but every time when I use 1:100 I could certainly feel the difference, the car runs quieter and throttle response feels quicker, the car feels exceptionally different at high rpms, it just doesn’t feel like it’s losing power like it normally does at high rev range. I really really hope that you guys could make a video on this upper cylinder lubricant thing as it is a subject that very little people have studied but could potentially be useful.
New technology is worth it.
Right on!
how much dose this engine cost for rehone service plus remachie piston and new set of ring
Contact the guys at ProMotor for the pricing.
Not exactly a fair comparison. The fueling is different.
The piston part also, but to really see the benefit the only thing modified should been the piston and a minimal hone top keep displacement as close a possible.
As mentioned in the intro, this is a segment from the Engine Performance Expo.There is a lot more to this story on that channel and the Stapleton42 channel.
All 8 pistons are the new style with the thinner rings. The baseline of 730 HP was the original full round pistons, thicker rings and hone. We made 765 HP updating just the pistons, rings and hone, but we ending up scuffing one of those pistons because we pushed the limits. This video shows how we fixed the scuffed cylinders and were able to reuse the Line 2 Line skirt coating to save 5 pistons from the first update rebuild. This time, we made 774 HP with the baseline carb and fuel. Dad's other engine made 792 HP with the bigger carb and the VP Q16 fuel. That's why we tested the bigger carb and VP Q16 fuel on this engine - it's an apples to apples comparison to the first engine, and they are within 1 HP of each other.
@@TotalSeal I guess I misunderstood that part. I thought you did the second run with a new Pistons also with a new carburetor setup.
So basically you're saying a fresh set of pistons on a worn engine is good for about 50 horsepower?
Also taking the consideration that the new ring design probably is majority of that 50 horsepower.
I've been experimenting with coatings but I don't have any dyno but I don't think it would affect my horsepower. I'm more about trying to prevent myself from melting piston tops. I'm in the diesel scene.
@@BentonL No worries. The new hone, pistons and rings are worth a solid 40 HP every time we do this swap. On a diesel, going with a Gapless 2nd ring compared to a conventional gap 2nd ring is worth almost as much (no other changes).
That's why its stamped engine side on a flexplate. Engine side
578 👍's up thank you for sharing 😊
Thank you too
not necessarily making more horsepower, but liberating hp that's already there by controlling the ring friction and compression lost .
Fair point
I spoke with a machinist and he told me that the new style thin piston rings can't be used for old big blocks with a 4.400 inch bore. Is that correct?
No, thin rings can be used in almost any bore size. You just need custom pistons like these to do that.
@@TotalSeal what's the longevity of that style ring setup vs traditional?
@@donwasse7892 In a NASCAR engine, the thiner rings triple the engine life.
@@themotoroilgeekIs there a technical phone line a guy could call for questions like these and get solid answers like yours, maybe even machine shop recommendations?
Is this guy for real? Is he actually a rep for total seal?
IMHO he does work for Total Seal. That gives him access to $$ and engineering time to get some of these tests done that would be way more difficult without that direct access.
Yes, As mentioned in the intro, this is a segment from the Engine Performance Expo.There is a lot more to this story on that channel and the Stapleton42 channel.
All 8 pistons are the new style with the thinner rings. The baseline of 730 HP was the original full round pistons, thicker rings and hone. We made 765 HP updating just the pistons, rings and hone, but we ending up scuffing one of those pistons because we pushed the limits. This video shows how we fixed the scuffed cylinders and were able to reuse the Line 2 Line skirt coating to save 5 pistons from the first update rebuild. This time, we made 774 HP with the baseline carb and fuel. Dad's other engine made 792 HP with the bigger carb and the VP Q16 fuel. That's why we tested the bigger carb and VP Q16 fuel on this engine - it's an apples to apples comparison to the first engine, and they are within 1 HP of each other.
Hi
Having worked in engine labs for to many years I can't see the comparison it's not a like for like change let alone when honing a cylinder metal is removed and therefore ring tension is reduced. Also piston design and finish has changed timing changed not as the title suggests also these are flash dyno results the engine was not held at a constant speed and load to give it time to settle
As mentioned in the intro, this is a segment from the Engine Performance Expo.There is a lot more to this story on that channel and the Stapleton42 channel.
All 8 pistons are the new style with the thinner rings. The baseline of 730 HP was the original full round pistons, thicker rings and hone. We made 765 HP updating just the pistons, rings and hone, but we ending up scuffing one of those pistons because we pushed the limits. This video shows how we fixed the scuffed cylinders and were able to reuse the Line 2 Line skirt coating to save 5 pistons from the first update rebuild. This time, we made 774 HP with the baseline carb and fuel. Dad's other engine made 792 HP with the bigger carb and the VP Q16 fuel. That's why we tested the bigger carb and VP Q16 fuel on this engine - it's an apples to apples comparison to the first engine, and they are within 1 HP of each other.
@@TotalSeal cheers
So this was just a hone? Did you use oversized rings?
New hone, pistons and rings
@@TotalSeal wow you learn something new every day what cross hatch pattern is best and what type of rings did you use?
@@jonathondeeds3423 30 Degrees included angle on the cross hatch, and we used Total Seal Diamond Finish .7mm, .7mm, 2.0mm rings
Probably get better numbers if you put something on it other than a 2 barrel....... hahahaha.
Which machine shops have you dealt with that use a profilometer? I want my next build to be by a machine shop that uses one.
LOL, Contact Rottler to get a list of shops with their equipment in your area.
So they probably lost power with the new rings vs the old loose rings, so they through a better carb and oxygenated fuel into it to get it above the old number.
Before the honing and new pistons, hp was 733. After the honing and pistons, hp was 774. Then after changing the carbs and fuel, it went up to 791.
No, watch it again. 773 HP was the number before the carb and fuel swap, so it was 40 up from the old hone, rings and pistons with a baseline tune up.
Would have been a more honest comparison using the original carburetor
Check the description. All the details are there. The gain with the same fuel and carburetor was 40 HP (without optimized timing).
Lake, you are omitting too much detail. I presume all pistons are new. Question, what is the cause of the skirt scuffing on old pistons? Specs on Heads, camshaft and displacement? Which ring set was used and tension? Again, skipping the details.
He literally said 3 pistons new 5 were old
You wanta bore and hone mine , i got a few im working on ..but i dont have a machine shop in my area ..so i gotta find someone
@DavidPhillips-rs5dq so he had 3 completely different pistons in the engine while retaining 5 old pistons with thicker rings?
As mentioned in the intro, this is a segment from the Engine Performance Expo.There is a lot more to this story on that channel and the Stapleton42 channel.
All 8 pistons are the new style with the thinner rings. The baseline of 730 HP was the original full round pistons, thicker rings and hone. We made 765 HP updating just the pistons, rings and hone, but we ending up scuffing one of those pistons because we pushed the limits. This video shows how we fixed the scuffed cylinders and were able to reuse the Line 2 Line skirt coating to save 5 pistons from the first update rebuild. This time, we made 774 HP with the baseline carb and fuel. Dad's other engine made 792 HP with the bigger carb and the VP Q16 fuel. That's why we tested the bigger carb and VP Q16 fuel on this engine - it's an apples to apples comparison to the first engine, and they are within 1 HP of each other.
That's right. It's an engine. Not a motor unless you drive Tesla. Thanks. Why does the internet say motors? I'm 2nd gen mechanic, my parent went to general motors institute to learn Engines. You just earned a new subscriber. I don't watch motor videos 😂. I don't. 👍👍
It's not a internet thing to use motor. It was used even before your grandparents were born. Motorsports for racing but none were electric. There's motorcycles, again not electric. Major Oil companies put motor oil right on the labels. General Motors and Ford Motor Company both use it in their name ,yet neither one had electric vehicles when they started.
Exactly!
Motor is the word for anything that makes rotating power, air motor in your impact, electric motor in your tesla, gasoline motor in my car, engines are motors but not all motors are engines.
Then why isnt GM named GE? as in general engine?
It is called indianapolis motor speedway. Not indianapolis engine speedway.
All you did was pump more fuel through it to get the increase Piston and rings had nothing to do with it.
Read the description. The details are listed there.
"How Much Power Are New Pistons, Rings and a Hone Worth" we'll never know.......should have tested same fuel, same carb...then we know the answer the question that is the title.
It was in the video. 773 HP was the number just from the hone, the pistons and the rings on the baseline carb and fuel.
You say you saved 5 of the older pistons, but also say you used newer thinner rings. How did you use thinner rings on the old pistons, doesnt make sense. You also say the new pistons have smaller skirts, but surely you are not running different pistons. Were the pistons/rings the same weight? Reciprocating mass consumes power, especially at higher piston speeds. You dont mention what CC the engine is, or how you tested the old engine when it had ruined pistons. Was the oil identical, was it originally rated with imperial horsepower instead of standard. Were the rod bearings replaced. A lot not mentioned and also conflicting statements.
As mentioned in the intro, this is a segment from the Engine Performance Expo.There is a lot more to this story on that channel and the Stapleton42 channel.
All 8 pistons are the new style with the thinner rings. The baseline of 730 HP was the original full round pistons, thicker rings and hone. We made 765 HP updating just the pistons, rings and hone, but we ending up scuffing one of those pistons because we pushed the limits. This video shows how we fixed the scuffed cylinders and were able to reuse the Line 2 Line skirt coating to save 5 pistons from the first update rebuild. This time, we made 774 HP with the baseline carb and fuel. Dad's other engine made 792 HP with the bigger carb and the VP Q16 fuel. That's why we tested the bigger carb and VP Q16 fuel on this engine - it's an apples to apples comparison to the first engine, and they are within 1 HP of each other.
I see this totally backwards of how this is presented. You say you gained 60 hp. I say you was only giving up 60 using old school ring package on an injured high strung engine. Some leakdown or cranking compression #'s would have been useful but were excluded. Most peeps have seen very injured engines still run good enough you question your diagnostic tools. Would look bad if an engine has 50psi of cranking compression on 3 holes still made 700+
As mentioned in the intro, this is a segment from the Engine Performance Expo.There is a lot more to this story on that channel and the Stapleton42 channel.
All 8 pistons are the new style with the thinner rings. The baseline of 730 HP was the original full round pistons, thicker rings and hone. We made 765 HP updating just the pistons, rings and hone, but we ending up scuffing one of those pistons because we pushed the limits. This video shows how we fixed the scuffed cylinders and were able to reuse the Line 2 Line skirt coating to save 5 pistons from the first update rebuild. This time, we made 774 HP with the baseline carb and fuel. Dad's other engine made 792 HP with the bigger carb and the VP Q16 fuel. That's why we tested the bigger carb and VP Q16 fuel on this engine - it's an apples to apples comparison to the first engine, and they are within 1 HP of each other.
DO YOU HAVE TO SHOUT THOUGH?!
he is really exited LOL.
If you picked up 60 HP on your Dad's old NASCAR engine, you'd probably be excited too!
The title is misleading, to many changes to validate your claim
As mentioned in the intro, this is a segment from the Engine Performance Expo.There is a lot more to this story on that channel and the Stapleton42 channel.
All 8 pistons are the new style with the thinner rings. The baseline of 730 HP was the original full round pistons, thicker rings and hone. We made 765 HP updating just the pistons, rings and hone, but we ending up scuffing one of those pistons because we pushed the limits. This video shows how we fixed the scuffed cylinders and were able to reuse the Line 2 Line skirt coating to save 5 pistons from the first update rebuild. This time, we made 774 HP with the baseline carb and fuel. Dad's other engine made 792 HP with the bigger carb and the VP Q16 fuel. That's why we tested the bigger carb and VP Q16 fuel on this engine - it's an apples to apples comparison to the first engine, and they are within 1 HP of each other.
60 horse extra isn't much.
Really?
Definitely not an apple to apples comparison. Why brag about something if you not doing a proper comparison! I watch all your videos but this one ain't cutting it.
As mentioned in the intro, this is a segment from the Engine Performance Expo.There is a lot more to this story on that channel and the Stapleton42 channel.
All 8 pistons are the new style with the thinner rings. The baseline of 730 HP was the original full round pistons, thicker rings and hone. We made 765 HP updating just the pistons, rings and hone, but we ending up scuffing one of those pistons because we pushed the limits. This video shows how we fixed the scuffed cylinders and were able to reuse the Line 2 Line skirt coating to save 5 pistons from the first update rebuild. This time, we made 774 HP with the baseline carb and fuel. Dad's other engine made 792 HP with the bigger carb and the VP Q16 fuel. That's why we tested the bigger carb and VP Q16 fuel on this engine - it's an apples to apples comparison to the first engine, and they are within 1 HP of each other.
None. They are required for the engine to operate properly.
Simple answer to the question, it depends. As an example, if you have Nicom cylinders with really good rings in a really high rpm 4 banger, you will only hurt power from honing it.... If you honed it in 1970 after 12 beers with a dingleberry hone in the back yard, you will probably gain a significant amount of power and massively reduce blowby..... 🤣