comp r lifters
You can use them without adjustable valvetrain, you just have to be real precise on your push rod length. Get you an adjustable pushrod and adjust it out until zero lash and add .010" to it. The only problem is the lenths are only availible in .050 increments.
called comp, and installed them on hot settings, less than 1/8th of a turn, with adjustable rockers, they sure are louder than stock, comp told me they would be, but dang, i thought the point of a hydraulic lifter was to quieten down the valvetrain
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What is the advantage to this lifter as opposed to the stock one? I dont see stock ones failing, so is there a reason to switch? Are they more reliable? Do they make more power? Are they quieter?
I'm missing the point of switching.
I'm missing the point of switching.
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TECH Fanatic
Joined: Jan 2002
Posts: 1,205
Likes: 0
From: harrisburg, pa
generally aftermarket is more reliable..look at the stock rockers...they self destruct..
I upgraded all valvetrain parts over stock...not saying im right..but GM skimps where they can and only design parts for moderate hp..
I upgraded all valvetrain parts over stock...not saying im right..but GM skimps where they can and only design parts for moderate hp..
Originally Posted by SAM98WS6
generally aftermarket is more reliable..look at the stock rockers...they self destruct..
I upgraded all valvetrain parts over stock...not saying im right..but GM skimps where they can and only design parts for moderate hp..
I upgraded all valvetrain parts over stock...not saying im right..but GM skimps where they can and only design parts for moderate hp..
I'm not doubting that the aftermarket might be a better piece, but just want to see some examples of stock failures, to justify the additional expense. In fact, IMO, the stock ones will be just fine for 95% of the people on here.
But I have NEVER seen anyone on here having problems with stock lifters, people are turning them to 7000 rpm and I've seen 2 instances of Comp R's "sticking" and tearing up motors on this board, which is why I'm taking that crap out of my motor in January. The people on here who are always ranting about how bad stock parts are don't know what the hell they're talking about.
Search things like "needle bearings in oil pan" or "changed my oil, what are these thin metal pins". That may not get em all but threads that I have seen went something like that. Another way I have seen it is "new noises under valve cover".
Originally Posted by LSUxBlake
But I have NEVER seen anyone on here having problems with stock lifters, people are turning them to 7000 rpm and I've seen 2 instances of Comp R's "sticking" and tearing up motors on this board, which is why I'm taking that crap out of my motor in January. The people on here who are always ranting about how bad stock parts are don't know what the hell they're talking about.
If your spring pressure are pretty high you're more likley to destroy the lifter prematurely.
I have Comp Rs, they're dead quiet and have had no issues with 13K miles. They were professionally installed. I also have Jesel SS series rockers and non-insane spring pressures.
It's all about the selection of parts and install.
TECH Fanatic
Joined: Jan 2002
Posts: 1,205
Likes: 0
From: harrisburg, pa
why would i waste my breath telling you guys stock rockers self destruct..if they didnt..come on..do a search before you act like buttheads..we are just trying to help you guys avoid problems we've gone through.
Originally Posted by Bo White
Search things like "needle bearings in oil pan" or "changed my oil, what are these thin metal pins". That may not get em all but threads that I have seen went something like that. Another way I have seen it is "new noises under valve cover".
On The Tree
Joined: Dec 2003
Posts: 179
Likes: 0
From: Bloomington, MN
stock lifters work just fine and so do stock rockers.rockers have failed on rare occasion but its nothing to worry about[the asa race series has been using stock rockers and lifters and typically get 2 seasons on a motor,and they run them hard!. comp. r's scare me more i have seen them fall apart.not a good choice for a aluminum motor[expansion and contraction]imo.
Well I'm pretty sure I have at least one stock lifter that is toast right know. My motor has been making a hell of a racket. I'm still in the process of teardown, and all of the springs, rockers, and pushrods seem to be in perfect shape. BTW, I'm running CC 918 springs, Yella Terra rockers, and Thunder Racing pushrods with a TR224 cam. I'll be putting in CC stock replacement lifters.
I haven't heard of many LS1 lifter failures, but there have been a few. As for stock rocker arm failures, there have been quite a number of those.
I haven't heard of many LS1 lifter failures, but there have been a few. As for stock rocker arm failures, there have been quite a number of those.
