11-21-13, 08:15AM
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#1
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Join Date: Feb 2009 |
Location: Chesterfield, VA |
Posts: 819
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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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11-21-13, 11:45AM
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#2
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Join Date: May 2003 |
Location: .... |
Posts: 19,267
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That's a hell of allot cheaper, I'll keep that in mind.
__________________
The things they hide, the way they spin things, the excuses that they make and the things they omit. 
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11-21-13, 11:51AM
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#3
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Join Date: Mar 2005 |
Location: AZ |
Posts: 4,136
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Jim
Is there any machining needed to the block to use these lifters or will they drop tight in?
__________________
You can shear a sheep many times, but you can only skin them once.
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11-21-13, 10:57PM
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#4
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Join Date: Jul 2008 |
Location: Chilliwack BC |
Posts: 51
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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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11-23-13, 12:36PM
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#5
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Join Date: Feb 2009 |
Location: Chesterfield, VA |
Posts: 819
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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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11-26-13, 09:46PM
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#6
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Join Date: Jul 2007 |
Location: Davisburg Michigan |
Posts: 500
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Please keep us informed Jim. Thank you. Mike McCarty
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12-02-13, 03:40PM
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#7
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Join Date: Jan 2006 |
Location: Timmins Ont |
Posts: 4,460
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Jim could these be used in a aftermarket block?
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12-21-13, 07:11PM
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#8
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Join Date: Feb 2010 |
Location: 20 min's south of Baltimore |
Posts: 31
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Quote:
Originally Posted by Mr. PBody
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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Nice going Jim...about 3 months after you build mine...
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10-25-15, 10:18AM
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#9
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Join Date: Jan 2006 |
Location: Timmins Ont |
Posts: 4,460
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Any updates Jim I will be needing Hyd Lifters for my pump gas build.
__________________
505 Pontiac
9.00@ 149
5.70 @121
3250lbs
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10-25-15, 10:26AM
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#10
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Join Date: Jul 2002 |
Location: long beach,california |
Posts: 1,909
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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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10-25-15, 11:13AM
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#11
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Join Date: Aug 2002 |
Location: Brooksville, Fl |
Posts: 1,933
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Quote:
Originally Posted by Mr. PBody
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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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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10-25-15, 02:56PM
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#12
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Join Date: May 2003 |
Location: .... |
Posts: 19,267
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Quote:
Originally Posted by Pontiac Dude
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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That was a damn good combo you have, hyd roller...pump gas 340 CFM E-head 9.70's in a 3400 # car.
__________________
The things they hide, the way they spin things, the excuses that they make and the things they omit.
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10-25-15, 02:57PM
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#13
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Join Date: Jan 2006 |
Location: Timmins Ont |
Posts: 4,460
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Quote:
Originally Posted by tjs44
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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Good to know Tom thanks... Dave at SD will fix me up..
__________________
505 Pontiac
9.00@ 149
5.70 @121
3250lbs
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