comp lifters are JUNK!
Originally Posted by GuitsBoy
If you have non-adjstable rockers, this is NOT the correct way to do it, no matter who says it is. The preload can only be changed by using different length pushrods. The rocker bolt gets torqued to 22 ft. lbs. Tighten it till it breaks and in theory if wont push the lifter any more. All the rocker bolt does is seat the fulcrum home against the boss. Tighening it more will not compress the solid metal. However its more likely that yours are under torqued, which does nothing by leave your rockers loose and wobbling. Find a new shop, and make sure that comp know youre talking about NON adjustable rockers.
Thread Starter
TECH Fanatic
iTrader: (11)
Joined: Sep 2005
Posts: 1,954
Likes: 1
From: fort walton beach,fl
Originally Posted by GuitsBoy
If you have non-adjstable rockers, this is NOT the correct way to do it, no matter who says it is. The preload can only be changed by using different length pushrods. The rocker bolt gets torqued to 22 ft. lbs. Tighten it till it breaks and in theory if wont push the lifter any more. All the rocker bolt does is seat the fulcrum home against the boss. Tighening it more will not compress the solid metal. However its more likely that yours are under torqued, which does nothing by leave your rockers loose and wobbling. Find a new shop, and make sure that comp know youre talking about NON adjustable rockers.
we must have a communication problem,.
..i never stated that i had nonadjustable rockers. 
.a quick look at my signature will tell you what rockers i have...i have the pro magnum adjustable rockers...NOT stock at all! 
My bad guys... Was angry with the shop, not you defaultexistance, as this is not the first time ive heard shops assuming you can set preload via how far you torque the rocker bolts. And yes i did make the incorrect assumptions that this is what you were referring to. Didnt mean to come off that harsh, but misinformed shops **** me right off especially when their negligence repeatedly tears up parts. Unfortunately I didnt read enough to see that this was not necessarily the case here. Sorry for starting a shitstorm.
Thread Starter
TECH Fanatic
iTrader: (11)
Joined: Sep 2005
Posts: 1,954
Likes: 1
From: fort walton beach,fl
Originally Posted by GuitsBoy
My bad guys... Was angry with the shop, not you defaultexistance, as this is not the first time ive heard shops assuming you can set preload via how far you torque the rocker bolts. And yes i did make the incorrect assumptions that this is what you were referring to. Didnt mean to come off that harsh, but misinformed shops **** me right off especially when their negligence repeatedly tears up parts. Unfortunately I didnt read enough to see that this was not necessarily the case here. Sorry for starting a shitstorm.
10-4......anyone else wana sound off about comp annd lifter probs?
The ones that failed originally, did you replace them one by one or replace all of them? If one by one, did any of the new ones fail after replacing them or did the others continue to fail?
I to have been running the Comp 850 replacements with my trex cam and up to 7400 RPM on them, no issues here and your the first I've seen so far and hope the last that seen these failures. Did you send Comp the failed ones? What did they think was the cause?
I to have been running the Comp 850 replacements with my trex cam and up to 7400 RPM on them, no issues here and your the first I've seen so far and hope the last that seen these failures. Did you send Comp the failed ones? What did they think was the cause?
