trans2000am

iTrader: (49)

Having a strange issue with my rear two rockers on the passenger side head hitting my valve covers. what could cause this? all others are fine pushrods are the correct size. was hitting my ebay covers so i put on buddies stock covers same thing. its hitting near the gasket STOCK ROCKERS

Darkman

iTrader: (2)

I had that issue once with Jesel rockers on TFS heads. It turned out to be rockers hitting the rivets that hold the baffles in the valve cover. I was able to grind them down a bit to cure the problem.

trans2000am

iTrader: (49)

ya i grinded down my ebay covers as much as possible but im getting close to the gasket and they are still hitting, didnt want to grind on my buddys valve covers

ZeeOSix

What's changed if stock pushrods, rockers and valve covers cause the rockers to hit the covers? Doesn't make sense for this to happen with stock parts.

trans2000am

iTrader: (49)

Pushrods are spec.d out by kurt urban

ZeeOSix

I take it your cam is way more lift that stock ... probably the reason the rockers are hitting the covers.

trans2000am

iTrader: (49)

I'll find my cam card think its a 236/236 on a 610 lift

trans2000am

iTrader: (49)

If my lift is to high wouldn't all my rockers hit? I doubt Kurt measured wrong think the pushrods are 7.360

ZeeOSix

The only way a pushrod is going to make the rocker arm move higher is if the pushrod was so long that it bottomed out the lifter which would then cause more lift on the rocker arm and valve. If the the lifter is operating in it's plunger range, then the cam alone is what determines the rocker arm and valve lift.

Could be that there is something in the area on the covers that isn't giving enough room, causing these two rockers to hit due to the cam lift. Can you see where they are hitting on the inside of the cover?

trans2000am

iTrader: (49)

ya i will post some pics where they are hitting I removed the rockers and pushrods and re-installed them