#41  
Old 06-10-2020, 05:02 PM
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I owned a machine shop when I was younger. For Pontiacs I always used Johnson 951R's and never had a problem. I used a lot of Melling RAIII and RAIV cams and never a break in issue. One time I was building a RAIII for my cousin and when I went to pick up the lifters they were loose in a padded envelope and rubber stamped "951R" on the outside. I was in a time crunch and had no choice but to use them. 30 yrs. later and they are still quiet, go figure...

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Old 06-10-2020, 05:02 PM
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Quote:
Originally Posted by Formulajones View Post
When it comes to hydraulic flat tappets, I've used all kinds of crap for lifters. Everything from Melling, Crane, Comp, Hy Lift, mismatched brands with different camshaft brands, and even the cheapest priced over the counter lifters from the local auto parts store back when I didn't have any money, threw those on a used camshaft, then proceeded to daily drive it for 4-5 years lol.


Never once a flat tappet cam failure.

My experience as well until I tried an XE274. Break in went fine as usual but then 2 flat exhaust lobes after 1 month of use.

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Old 06-10-2020, 05:16 PM
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I've used at least 3 XE cams that I can remember, 1 in a Pontiac and the others in a Chevrolet. Never had a failure with those either but it's been several years since I tried one.

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Old 06-10-2020, 05:28 PM
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I never liked any Comp Cams cams that I used for 1 reason or another. My opinion.

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Old 06-10-2020, 05:48 PM
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I've had some I liked, and some not so much. Usually the ones I liked were custom Comp lobes, not off the shelf stuff.

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Old 06-10-2020, 09:49 PM
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Solid lifter flat tappet cams are better and more reliable than hydraulics. The hydraulic valve lifter was made for only one reason because they are quiet but today the aftermarket stuff is crap so why even bother using a hyd lifter a solid lifter is very quiet compared to a ticking hyd lifter.

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Old 06-10-2020, 11:03 PM
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Wife daily drives a solid flat tappet. I like it. Tight lash that hasn't moved in over 30k miles, I can't even hear it. EDM hole lifters keep it lubed, nitride the cam for good measure. It's been perfect.

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Old 06-10-2020, 11:25 PM
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What makes us think the present solid lifters are any better than Hyd ?Pretty sure they are the same makers?Tom

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Old 06-10-2020, 11:27 PM
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Material wise I don't think they are any different. They just eliminate the hydraulic feature that so many complain about.

I think that is what Tim was trying to convey.

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Old 06-11-2020, 12:40 AM
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People are weird ... I'm one of them ... I've ridden manually adjusted valve train motorcycles for 5 decades. Never thought twice about it, or the occasional adjustment ... but from even my teenage years ... ohhh Solid Lifter ... gotta know your stuff to run one of those On motorcycles I've cared for solid lifters from cam in block flathead, OHV, OHC with rockers, OHC with shim and bucket.

Does an automotive solid lifter have any kind of spring seat for the pushrod at all? Something that keeps the "oil to pushrod" mating surfaces in contact on the base circle?

Just wondering if the solid lifters might fail less because they have a positive clearance during which they can rotate, whereas hydraulic lifters will always have some amount of pressure on the pushrod seat that might make them more hesitant to rotate.

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Old 06-11-2020, 09:10 AM
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Not that I'm aware of, on anything I've used anyway.

Mostly what I've read here is that people don't trust the hydraulic feature of the lifters, whether it be clearance issues, quality control or what ever, making for a noisy lifter. Although I've never experienced it myself. I use solid flat tappets in a couple of cars here for other reasons.

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Old 06-11-2020, 10:53 AM
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It would be nice if someone from the Pontiac world stepped up to bat and had Hylift Johnson do a production run of the a-0951s. I can get the “s” slow lifters for Mopars, I think top line made a special production run for one of the bigger mopar builders. They are very expensive for a flat tappet cam but I don’t know of any lifter that comes close qualities wise. I think next best is a Rhoads v max or v pro and tighten the lash down to quiet them up. Not all engine have adjustable valve terrain though. I have one build here that is not adjustable, I have big cam in hft bracket engine I am going to try some Johnson race hft lifter. Not Hylift Johnson, the other Johnson. See what they do. It should turn to 7000. Lol, maybe it will, maybe it won’t. It has about 250* @.050 and is 397 cid.

Overall I like the solid flat tappet cams with the edm oiling. I had Bullet do a sft yesterday for an engine. I asked what the range was for setting the valve lash. It was .018”-030”. Pretty big working range. If the lash works itself out of that range the engine would likely be roached not matter what type cam it had.

I don’t mind the Delphi lifters on something mild. I won’t run a Eaton any more unless there are no other options.


Last edited by Jay S; 06-11-2020 at 10:55 AM. Reason: edit
  #53  
Old 06-12-2020, 06:30 AM
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Isky Anti-Pump-Up Hydraulic Lifters 202-HY
vs
Crower Camsaver Hydraulic Lifters 66056X3-16

What do you guys think?

  #54  
Old 06-12-2020, 06:54 AM
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Thumbs up crower cam saver

Have been using Crower Cam Saver lifters on a Melling 068 cam for a few years now. No issues to report and happy with 10W30 VR1 oil. Tech at Crower recommended light oil to get oil up to lifters fast, and also more oil passes thru grove down to cam at startup.
Also told they will drop idle oil PSI a few pounds via groves to feed cam. I still have 20ish oil pressure at hot idle, reading off port by distributor. And so far all quiet!! Gerry

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  #55  
Old 06-15-2020, 03:51 AM
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Quote:
Originally Posted by Karck View Post
Isky Anti-Pump-Up Hydraulic Lifters 202-HY
vs
Crower Camsaver Hydraulic Lifters 66056X3-16

What do you guys think?
Any more experience with either of these? Anyone taken one apart?

  #56  
Old 06-18-2020, 06:39 AM
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Any more experience with either of these? Anyone taken one apart?
Replying to myself then, found out the isky lifters actually dont fit 400 probably, might need different pushrods.

Ugh.

  #57  
Old 06-18-2020, 09:40 AM
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Rhoads has a cam saver oiling option on their lifters.

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Old 06-18-2020, 11:48 PM
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I have noticed Isky has the same part number for chevy, Olds, Pontiac, and Buick. Kind of a generic . Which means they are Chevy on the oil band. Crower at least offers a Chevy lifter and a Pontiac lifter, plus has the oiling option available.


Last edited by Jay S; 06-18-2020 at 11:49 PM. Reason: Edit
  #59  
Old 07-05-2020, 08:02 AM
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Crower lifters, cam savers. Inside thelifter holes are not deburred... Imagine this **** starting to move around. I have losr hope and total off 400€ now.
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  #60  
Old 07-05-2020, 08:28 AM
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Damn Karck. That could get ugly real quick.

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