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Old 02-12-2008, 17:50   #1 (permalink)
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no oil pressure and roller lifters

Anyone experience no/low oil pressure when they go solid roller camshaft? Built a 408 stroker, CHI head, Comp Cams cam and lifters. Warmed it up on the Dyno and were just getting ready for a full throttle tug when the Dyno shut everything down (boom). All the safety solenoids kicked and scared the crap out of us. No oil pressure was the reason. Tore off all the tin and went looking for the window, broken whatever, shelled bearing....nuttin' WTF? Hung the pan with 4" bolts, 13L of oil and turned the pump. Big time leak at the back of the engine, turned the cam to see better, big time leak in the middle of the engine. The lifters uncover the gallery for 16 major oil leaks. Comp Cams reaction? AAaawwww and thanks for coming out! Be warned! The fix is on the way (Crane Lifters).
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Old 02-13-2008, 13:41   #2 (permalink)
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Re: no oil pressure and roller lifters

you have to ask why this was not checked for when the engine was built. non standard parts need to be checked fully to avoid this sort of thing. if the lifters were checked for oil feed to oil gallery alignment during the build, it would of saved this from happening. "never" assume that something in a lovely box with a sticker and a brand name is going to work properly. check, check and check again. and check everything. i hope all is going well now.
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Old 02-13-2008, 14:38   #3 (permalink)
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Re: no oil pressure and roller lifters

You do relise that the Cleveland and Windsor use different roller lifters !
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Old 02-14-2008, 06:29   #4 (permalink)
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Re: no oil pressure and roller lifters

Yep At first I thought that they had been boxed wrong, but examining another box of lifters, there are no Comp Cams Lifters that would work. This was a 'freshen with a tune up' (bigger cam), so admittedly there were assumptions made, but COMP CAMS MADE THE RECOMMENDATION. This is not an easy problem to see even now, which is why I'm telling our story. Very difficult to check, contrary to popular 'sexual intellectual' opinion. You have to wonder how many engines are blown up because of these lifters. You will note that Crane lists one lifter for Windsor and Cleveland, so one wonders what their issue will be lol.
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Old 02-14-2008, 13:30   #5 (permalink)
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Re: no oil pressure and roller lifters

that was a bad call on comp cams part, BUT, its not difficult to check at all. all you do is take a measurement form the base of cam lobe to top and bottom of lifter bore and top and bottom of oil gallery opening in lifter bore, then repeat by turning cam to measure from nose of lobe to same spots. now reference these measurements back to your lifter and you can then see where the oil gallery and top and bottom of lifter bore will be in relation to the lifter's full range of movement. it will take about 2 minutes to take these measurements and see if it will be ok or not. it dont take too much "sexual intellectuallity"
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Old 02-15-2008, 18:28   #6 (permalink)
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Re: no oil pressure and roller lifters

I run Comp solid roller lifters, link bar type in my 408c.
With 662 lift solid Comp roller cam. What partnumber lifters did you use?
I run the Comp 840-16
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Old 02-16-2008, 09:23   #7 (permalink)
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Re: no oil pressure and roller lifters

Yep right part number. Even went so far as to check other lifters to make sure they hadn't been boxed wrong. This is NOT an easy problem to find. I have checked and re-checked to see how it got missed. I did not build the engine originally, but now the mistakes are being caught (one way or the other lol) The ONLY way this one got found was by cycling the oil pump and watching the oil rain out of the engine. Where does everybody think the leak is coming from? This is not an oil gallery mis-alignment with the lifter oiling groove. The BIG oil pump, deep pan, etc could not cover up the internal bleeding. I am bringing this up to hopefully help others avoid this misfortune. I am really used to aftermarket parts under-performing, mis-fitting, etc etc and I am quite proficient at finding and fixing the deficiencies, but this one really got to me. I guess I bought into their advertising a little too hard...around here it is hard to buy anything but CC(usually not my choice), but this one really serves as a wake-up call!
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Old 02-16-2008, 21:41   #8 (permalink)
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Re: no oil pressure and roller lifters

Lets hope the front cam gallery plugs are in, and not missing.
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Old 02-17-2008, 15:05   #9 (permalink)
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Re: no oil pressure and roller lifters

Quote:
Originally Posted by xdclevo View Post
Lets hope the front cam gallery plugs are in, and not missing.
It's the lifters. What kind does CJPerf recommend? Just curious.
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Old 02-17-2008, 16:07   #10 (permalink)
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Re: no oil pressure and roller lifters

hi. Crane roller lifters, or in recent times Crow have been my choice. same said i have used comp cams without any problems. have you checked the base circle diameter of your cam? (if too large it will ride the lifter higher in the bore at any given cam lift.) if you check for lifter to bore placement the way i mentioned in a previous post it will be easy to spot the problem. compare dimentions of your lifters with another brand just to be sure they are or are not correct. check your oil gallery in your block to look for signs that someone may have modified the gallery at some time in the past. your problem can only be with the block cam or lifters. this is not rocket science, and with no disrespect, should be sorted with a few simple measurements.
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