What to set Preload for on Comp R Lifters?
12-07-2003, 04:14 PM
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What to set Preload for on Comp R Lifters? Hey I have been lurking around and I am wonderingwhat the preoad should be. My car is alomost done and I am also using YT rockers. I have seen some problems with cars and YT and whatnot. I have been told by JPR that this wont be a problem and I BELIVE HIM, but what signs should I look for if there IS trouble.
Preload for Comp R===?
Signs of bad YT's====? Thanks Bear
Preload for Comp R===?
Signs of bad YT's====? Thanks Bear
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12-07-2003, 10:16 PM
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I guess I should call myself. There is no room for error. I am sure Joe knows what it is supposed to be, but I wanna be doubly sure. This motor was too much money for me not to make that phone call.
12-08-2003, 08:09 AM
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I didn't measure myself. I ran into problems with both stock pushrods(too much preload) and 7.35(not enough). I tried a few different shims. With a .015" shim it was just right. So the answer is not very much at all. I am happy with these lifter spinning up to 7k and more.
12-08-2003, 12:12 PM
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Originally Posted by 4mulaJoe
I didn't measure myself. I ran into problems with both stock pushrods(too much preload) and 7.35(not enough). I tried a few different shims. With a .015" shim it was just right. So the answer is not very much at all. I am happy with these lifter spinning up to 7k and more.
What happens when you have too much preload on stock lifters?
12-08-2003, 12:16 PM
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I could just tell the preload was too tight from the sound at idle. It loped like it had only 2 valves in the car. No chop. You distinctly heard one set of valves open, then another set all at the same time. Dunno if that makes any sense, but it is easy to tell.
12-08-2003, 02:43 PM
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Originally Posted by Pro Stock John
"heard"
Comp recommends zero lash to .010 not .030.
I'm not making this up. Call them up and correct me.
Stock lifter preload is .050 FYI.
Comp recommends zero lash to .010 not .030.
I'm not making this up. Call them up and correct me.
Stock lifter preload is .050 FYI.
12-08-2003, 05:06 PM
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Lifter Preload....Why? Bear,
Why would it matter what the Lifter preload is when JPR built your motor. Also not to start trash talking, but dyno numbers don't mean nothing. You can have 500 hp and that don't make your car fast. The bottom line is ET.
PHATKOP
Why would it matter what the Lifter preload is when JPR built your motor. Also not to start trash talking, but dyno numbers don't mean nothing. You can have 500 hp and that don't make your car fast. The bottom line is ET.
PHATKOP