PowerTec Lifter Tec pt 2

[@turbo1438]

This stuff is so good, I'm taking notes with a hammer and chisel on a stone tablet just in case the internet vanishes someday.

[@montebradshaw128]

👍 True Dat!!!

[@thomasleclair7418]

,,,,,amen.........

[@fragman21]

thank you for sharing your years of wisdom. Sir you are awesome!

[@sc358.]

They're (bushed lifters) better David. It takes almost nothing in dimensional differences of the lifter's roller needle bearings to place exceptional loads on the one slightly larger one. Was seeing them break in trophy trucks with standard rollers (Jessel so not the cheap stuff). I'd suggest going with a Morel bushed roller lifter. They run them in NASCAR for a reason.
COMP cam, morel lifters, manton pushrods, td bushed steel rockers (or specific in some use cases such as Roush Yates in an RY45 for lower moi), xceldyne valves/retainers and psi springs makes for a pretty good valvetrain when components are selected to work together.
Great stuff! Appreciate your contributions.

[@jimkillen1065]

Sir I really appreciate this video. I use to adjust the valves that way back when I worked for GM . That was the way I was taught and did not know any better . I have experienced the changing the lash on the valve on a hot rod I had with a solid roller . Yes it does make a difference . I finally went to limiters on my lifters a slow bleed lifter on my 124 inch SS motor in my Harley set at the bottom of the liter . Yes Sir I finally learned as you suggested the hydraulic lifter need to be set close off the bottom . Live and learn

[@DANTHETUBEMAN]

I get to contact then go 1/4 turn. But what he is saying makes seance, the lifter can't lose what it does not have, now il be doing the lifter adjustment off the bottom of travel and checking for oiling on my 283 sbc

[@garydavies5973]

I have been using Oil Extreme in my big block mopar with a flat tappet cam, I have inspected the cam and lifters on a couple of times and can see no visual wear. Only complaint is the way in which the oil is sent, I live off shore and have had to get my freight forwarder to re-pack the delivery for me as they have been stuffed into and sent in a USPS flat rate box. No problems with the oil though.

[@chieft3357]

Mr. Vizard, if it wasn't for your books and vital information we would not have raced "F" prod in SCCA years ago. Thank you.

[@Jimmyk63]

Thank you for your insitghts and video 🙂❤👍

[@johnclarke6542]

Really enjoyed your videos, only realized the other day you wrote the book on A series engines I used to tune my mini many moons ago many thanks

[@brucesherrill4116]

I was hoping you would cover all the recent string of Comp Cams lifter failures.

[@ronaldlewis4032]

I got away from comp cams and lifters! I'm running a 770 lift solid roller Howard's cam with Hippo lifters and haven't had any problems!

[@montebradshaw128]

Very interesting info, thnx David!! I think I'm going to try this voodoo magic 1/4 from bottom adjust of yours on a Mark IV 496 BBC hyd roller build I'm building right now.

[@BubbaAyers1969]

Great information your giving, I’m having flashbacks (80’s) 😃.. we’re currently building a roller for a C10.. thx for sharing

[@ToddWright2]

These little vignettes/stories are terrific. Automotive snake oil is as bad as boutique audio snake oil(EE here, with 36 years in the field).
On Edit: I had a Chevy 305 with a worn lobe(1983). The can still had some lobe on that valve so I just tightened the lash up, and drove it tat ways until my fiance totalled the car(not valvetrain related - driver error).

[@rlld23]

Thanks for another great video!! Just wondering if you could do a video on what cam profiles like duration, LCA, will make torque. Im interested in making as much torque possible from down low in rpms to up high. You talked about fast lifts and fast valve closing. Could you go in depth a little more? What pistons and crankshafts? What secrets are we missing? Thank you Mr. Vizard

[@wadepower447]

David, I too am aware Zinc is over used but I feel it necessary to properly seat the rings. I have a fairly well built engine with solid rollers, billet steel roller cam, 11/1 compression. I was advised to use an oil with Zinc Additive to do the final break-in/seating the rings. After that, I feel it beneficial to use synthetic oil after break in. Vehicle manufactures break their engines with synthetic oil for 7 minutes. I guarantee their valve trains are nowhere as well manufactured as mine. What do you think?

[@remybrouwer8700]

For what I have investigated there are a lot of Brands that claim the lifters are theirs while in reality they buy them from the few manufactures that actually make them and just give them a fancy new name and one just get ripped off, now with that in mind which actual manufacturers of lifters have you had the best quality from NOT BRANDS but the real manufacturer.

[@terryheimerl8674]

David, a lot of myth busting in this video. I was especially interested in the hydraulic lifter lash adjustment at 1/4 from the bottom. It is amazing how many so called "truths" in the industry are exposed by experience and research.
Terry from Australia.

[@davidreed6070]

Mr vizard would wouldn't working from the bottom up in effect cause the pushrod to be shorter and in effect need the length checked in that position.

[@mikecondoluci53]

HI DAVID THANK YOU FOR ANOTHER GREAT VIDEO, ARE YOU DOING ANY SEMINARS THIS YEAR? THANKS AGAIN

[@scren99]

How does adjusting my lifters from the bottom effect valve train geometry? Do i need longer pushrods to get the rocker tracking properly afterwards?

[@rickss69]

Thanks!

[@bobg3034]

I used the Sealed Power racing hyd lifters with good results!

[@remybrouwer8700]

I was looking into the short travel hydraulic lifters but if I took a look at them I was under the impression that there were copies or even from the same manufacturer as is "X" brand just re-sale them and put another fancy name on it, in my journey of looking for something that seems good I found the Crower cheater lifters with micro-orifice for extra lubrication for the lobes, but then it comes to mind how much effect have this micro-orifice with bleed out of the lifter vs one that doesn't have that orifice, is there a big trade off ?, between HP/TQ loss vs cam lobe longevity specially using fine oils like 5w20 or 5w30 or the difference on HP/TQ loss due to bleed out is marginal but I still safe my camshaft for road course or where one is limited to use flat tapped hydraulic lifters, your videos are great and very much appreciated, keep up the good work Mr. David.

[@daledavies2334]

How do you feel about using Chrysler hyd flat tappets in a Ford 289 with the lifter bores honed to fit. CR 10:1, 210°@.050, 256° advertised, .472 lift Engle cam ground 109°LCA with 351 firing order?

[@alexgillies4183]

Thanks

[@muskyelondragon]

Put a link to your oil in the video description or pin it in a comment.
Thanks 🙂

[@edsmachine93]

Very good series 1 and 2.
What do you think about Gaterman hydraulic roller lifters?
Thanks Mr.Vizard.
Great video, worth watching. EM

[@BEYTEK]

The term. A chappy engine is a happy engine isn’t quite true. Well to a degree. Haha.

[@davidreed6070]

I've read this in a book of yours. I thought adjusting the lifters down might cause you to need a longer pushrod. Will you change where the rockers contact valve.

[@walterschmidt5464]

Why are some hydraulic lifters noisy ? What is making the noise and why ?
I have a set of Morel hyd roller lifters. I've adjusted them with different preloads, spring pressure right on the manufacturers settings but they rattle like crazy. I'd really like to understand why ?
Installed in a freshly lifter bore sleeved engine.

[@davidreed6070]

When running the lifters at the bottom, will that in effect change the geometry of the valve train.

[@seanfagan6998]

What about the fact that lifters are not being made anymore they are just being resurfaced and boring the inside larger inside diameter than the stock plungers they are putting back in them and selling them as new. Not roller lifters though. What are we to do? Can we get plungers in a oversize to rebuild or rebuilt ones that were sold to us as new?
Just tired of wiping out new cam and lifters. Has happened 😳 over and over I have used 3 of the top companies no names.

[@larryburns7094]

Thank you .

[@shelbyavant5081]

Yes!

[@rp75heavy]

Oil extreme

[@cjbert6790]

Does anyone make good quality flat tappet lifters anymore?

[@Thirdgen83]

Hylift Johnson. The only flat-tappet lifters that are made in USA.

[@Cougracer67]

P & G Valve Gapper?

[@1crazypj]

Don't know if or when you will see this but I've mentioned it before that I've read a vast amount of your printed articles since I was about 10~11 years old (late 1960's)
I also have several of your books (although less than I used to have due to people 'borrowing' them)
Around 1987 (don't think it was one of your articles?) there was an article on cam lift and acceleration of valve showing how poor the opening and closing, the graphs were very revealing.
Even a very well designed cam could be 'poor' due to production tolerances, grinding wheel vibration, etc.
I thought you were promoting roller lifters for the reduction in friction at one time?
Wouldn't side loading be due to roller not rolling rather than the decreased radius compared to a flat tappet (3/4"~7/8"dia compared to 100" R on solid)
Seems your now promoting solid lifters for performance?

[@troymecey]

Again I would like to ask you about shimming a hydraulic lifter to keep it from bleeding down.

[@flinch622]

I don't have an answer worth much, but maybe asking the right questions is what's needed [and I assume you are wanting to shim inside the bore under the plunger]. Does reducing cavity volume change any characteristic of bleed by between wall/plunger or through the pushrod? And how is what you propose any different than what David talks about when bottoming out a lifter, then coming UP a half turn [or whatever] when setting preload, thereby reducing the volume that needs refilling as the engine cycles by shortening possible plunger travel? Your range of take up being reduced, I expect valve spring rate becomes even more critical and... i'm out of my league recommending where the limits on that might be.
I think you may be headed to a solid lifter if you are not happy with hydraulics - try a tight lash design maybe and see how you like it?

[@troymecey]

@@flinch622 I only ask because of DVs comments on Speedtalk.com and I could never figure out how they went about it because it was never explained ( or I couldn't find it). That is why I keep asking. Not because I want a solid lifter , but merely a solid answer to quell my curiosity.

[@travismugridge2422]

Richard Holdener did this in a sense, his ls pushrod length video kind of replicates what less lifter travel does, +20 hp with .05 extra length I believe

[@troymecey]

@@travismugridge2422 would you have or know the link?

[@kennethperian4370]

See you next time see ya bye bye.

[@joesmith306]

Doesn't the cam get oil that's swung off the crankshaft?

[@rickss69]

Another myth that won't die. These are not lawnmower engines.

[@DaveMcLain]

What are your thoughts about using the 2.8 V6 lifters in flat tappet Chevrolet V8 applications like a 350 or 454?

[@Jeffsa12]

What would be the advantage? You talking hyd flat tappet/roller lifters? Lots of small details to think about here, and they may even be essentially the same. Most old GM engine hyd flat tappet lifters are dimensionally very similar, but not actually a direct drop in replacement.

[@DaveMcLain]

@@Jeffsa12 The 2.8 V6 used a flat tappet cam and because of the 60 degree V it must have had a tough time getting enough oil. The lifters are very similar to the Chevy V8 ones but also have a flat ground on the side to feed more oil.

[@jamest.5001]

@@DaveMcLain they make lifters with a tiny hole on the lobe face,

[@DaveMcLain]

@@jamest.5001 Not on a hydraulic lifter.

[@roberthollinshead2325]

@@DaveMcLain Howards cams makes hydraulic lifters with flats ground in the sides for more oiling

[@danpollard4210]

Please comment on Rhodes lifters I don't know what they are supposed to accomplish

[@jedgarsquink]

Those are the high bleed lifters that he was talking about toward the end, that give more vacuum and low end, and also effectively advance the cam timing by taking duration off the closing side.

[@TrentGustus]

What he insinuated was that if the lifter advances the cam timing it could cause the intake to hit the piston. I was considering these on a street car, the problem is that it's oil pressure that makes them work, if the engine is cold on start up , the increased oil pressure on start up will retard the timing when it's at idle until the engine warms up, the exact opposite of what you want.