Setting PReload on Comp 850-16 lifters
https://ls1tech.com/forums/generation-iii-internal-engine/911611-comp-cams-850-16-lifter-preload.html
Look here for info.
Your preload is determined by the PR length. Get an adjustable length PR, measure your PR length and then add your desired lifter preload. The Comp PR Length checker is what I have. Very easy to do.
R/
Frat
Look here for info.
Your preload is determined by the PR length. Get an adjustable length PR, measure your PR length and then add your desired lifter preload. The Comp PR Length checker is what I have. Very easy to do.
R/
Frat
Last edited by Fratsit; May 23, 2008 at 06:29 PM. Reason: Added more info.
Thread Starter
TECH Apprentice
iTrader: (45)
Joined: Jan 2006
Posts: 387
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From: SS Indianapolis, IN
I read that thread already. Didn't tell a whole lot on how to set preload. Is it turns past 22ftlbs on the trq wrench.? I may just send them back and get the 15's
No...not turns past 22 ft lbs. We have non adjustable valvetrains. The rockers are torqued to 22 ft lbs. Your preoad will be determined by your PR length.
I think there is a recent thread were Vettenuts described how to use the Comp PR checker. Let me see if I can find it.
R/
Frat
I think there is a recent thread were Vettenuts described how to use the Comp PR checker. Let me see if I can find it.
R/
Frat
https://ls1tech.com/forums/showthrea...oad+set+lifter
Look at post #9. You would need the PR checker from Comp Cams. I got mine from Speedinc.
R/
Frat
Look at post #9. You would need the PR checker from Comp Cams. I got mine from Speedinc.
R/
Frat
FYI, the -16 means there are 16 in the set...a -15 wouldn't be much use to ya! 
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Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Thread Starter
TECH Apprentice
iTrader: (45)
Joined: Jan 2006
Posts: 387
Likes: 0
From: SS Indianapolis, IN
I got ya on the preload. Its set by the length of pushrod. My heads have been milled .025, and Gunnar at Patriot told me to use 7.350 length pushrods. I'm guessing it would be a safe bet to just check huh?
Last edited by TheBiz; May 23, 2008 at 07:30 PM.
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