lorquettimothy

i have a set of harland sharp roller rockers (pedestal mount) that seem to be louder than normal. is there any way to tell for sure if i have a spoiled lifter or not. or anything that i can do to quiet them. any help would be appreciated.

Grimace5.0

Again from Cranes's site:
http://www.cranecams.com/?show=faq&id=3


What happens if the amount of Hydraulic Lifter Preload is wrong?
If clearance exists between the pushrod and the seat in the hydraulic lifter, after the rocker arm assembly has been torqued down, you will have no lifter preload. In this case the valve train will be noisy when the engine is running. All of the hydraulic force produced by the lifter will be exerted against the lifter?s retaining lock, and this could cause the lock to fail.

xtturbo

i put a new set of crane roller rockers on my car..they are noisy ...makes me worry

lorquettimothy

i know that i definitely have preload on the lifter, but they are still noisy, they are a brand new set of lunati lifters, but could one of them of gone bad. what about oil additives to quite the rockers a little.

FiveLiterRiceEater

all roller rockers are noise. they're loud and annoying thats why people dont use them on street cars.

teal9550

i have had roller rockers on many cars and they were not noisy if adusted right