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Old 11-21-13, 08:15AM   #1
Mr. PBody
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Default Hydraulic rollers

One of the problems we experience trying to modernize the Pontiac are the retro-fit hydraulic rollers. They don't seem very reliable and are VERY expensive (more than solid rollers). They're also rather large and heavy.

I have devised a system that uses factory-type lifters, rather than the retro-fit stuff. I also have found the lifter with the correct oil band for use in the stock block. "Custom" length pushrods would still be required.

This system could be "had" for under $350, vs. the $520 it now takes to get the rollers.

Anyone interested?

Jim
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Old 11-21-13, 11:45AM   #2
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That's a hell of allot cheaper, I'll keep that in mind.
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Old 11-21-13, 11:51AM   #3
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Jim
Is there any machining needed to the block to use these lifters or will they drop tight in?
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Old 11-21-13, 10:57PM   #4
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Sounds great Jim, like Mb125, is this a drop/bolt in deal or will there be some machining required?

FYI we've been having great luck with the Comp 857S retrofit lifters (no issues and over 100 sets sold and in use), they aren't listed in the catalog and are from a different lifter manufacturer vs. the std. 857 lifters. Price is $479.95 a set.

I do like the idea of an OE style step up, if it's a drop in deal you'll have a winner without a doubt and a lower cost is always a good thing.

Dave
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Old 11-23-13, 12:36PM   #5
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Yes, "drop-in". Maybe a "relief" needed at the base of the valley cover (not the block) where the bolts go through. Haven't worked that out yet.

Jim
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Old 11-26-13, 09:46PM   #6
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Please keep us informed Jim. Thank you. Mike McCarty
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Old 12-02-13, 03:40PM   #7
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Jim could these be used in a aftermarket block?
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Old 12-21-13, 07:11PM   #8
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Quote:
Originally Posted by Mr. PBody View Post
One of the problems we experience trying to modernize the Pontiac are the retro-fit hydraulic rollers. They don't seem very reliable and are VERY expensive (more than solid rollers). They're also rather large and heavy.

I have devised a system that uses factory-type lifters, rather than the retro-fit stuff. I also have found the lifter with the correct oil band for use in the stock block. "Custom" length pushrods would still be required.

This system could be "had" for under $350, vs. the $520 it now takes to get the rollers.

Anyone interested?

Jim
Nice going Jim...about 3 months after you build mine...
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Old 10-25-15, 10:18AM   #9
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Any updates Jim I will be needing Hyd Lifters for my pump gas build.
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Old 10-25-15, 10:26AM   #10
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This post is very old,since then from my experience the current hyd rollers although might be more are performing well.My last 3 engines used the newest Comp hyd roller lifters.My current engine has 150 on the seats and made HP till 6700 when it was shut down.There was no fall off and was still climbing.I drive it a lot,every couple days.The cams are in the 400 lobe lift and in duration of 230s-240s at 50.Tom
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Old 10-25-15, 11:13AM   #11
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Quote:
Originally Posted by Mr. PBody View Post
One of the problems we experience trying to modernize the Pontiac are the retro-fit hydraulic rollers. They don't seem very reliable and are VERY expensive (more than solid rollers). They're also rather large and heavy.

I have devised a system that uses factory-type lifters, rather than the retro-fit stuff. I also have found the lifter with the correct oil band for use in the stock block. "Custom" length pushrods would still be required.

This system could be "had" for under $350, vs. the $520 it now takes to get the rollers.

Anyone interested?

Jim
Having built quite few hyd roller Pontiacs even back before anyone else was on the bandwagon. Never personally had issues with the retro fits. But do have my own break=in and lash settings. Even ran them to 7000 rpm in my own 535 on Nitrous without one issue.
If I hear one more of those heavy references for a 5500 rpm Pontiac engine I think I'm gonna puke. LOL.

But glad to see another alternative out there for Pontiac engines.
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Old 10-25-15, 02:56PM   #12
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Quote:
Originally Posted by Pontiac Dude View Post
Having built quite few hyd roller Pontiacs even back before anyone else was on the bandwagon. Never personally had issues with the retro fits. But do have my own break=in and lash settings. Even ran them to 7000 rpm in my own 535 on Nitrous without one issue.
If I hear one more of those heavy references for a 5500 rpm Pontiac engine I think I'm gonna puke. LOL.

But glad to see another alternative out there for Pontiac engines.
That was a damn good combo you have, hyd roller...pump gas 340 CFM E-head 9.70's in a 3400 # car.
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Old 10-25-15, 02:57PM   #13
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Quote:
Originally Posted by tjs44 View Post
This post is very old,since then from my experience the current hyd rollers although might be more are performing well.My last 3 engines used the newest Comp hyd roller lifters.My current engine has 150 on the seats and made HP till 6700 when it was shut down.There was no fall off and was still climbing.I drive it a lot,every couple days.The cams are in the 400 lobe lift and in duration of 230s-240s at 50.Tom
Good to know Tom thanks... Dave at SD will fix me up..
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