Duffster

iTrader: (103)

All, I've purchased a set of roller rockers and after making all the preparations to clean them and soak them in oil for 24 hours, I went to install them this evening and ran into this with the first two pair...







Now, I currently see 3 possible solutions and wanted opinions.

1. I grind down lightly on the heads where the adjustable studs are to give it clearance (it could weaken the rockers).

2. I remove my heads and grind down on the inside to give clearance for the rockers (it would increase the chances of oil leaks) It would also require work on the valve covers for clearance.

3. I try to return them to the seller here on the boards.

I'm considering choice one if the strong opinion is that enough material won't be removed to weaken it significantly. I know some rockers need clearancing under the nose for spring spacing, but wanted other views or possible other solutions. Thanks

D

Monte4ever

iTrader: (2)

I would definitely not grind on the rocker arm at all. I like choice number three but you can bet that's most likely why they sold them.

garygnu

I would remove the heads and grind for rocker arm clearence.

cowboysfan

x2 this is safer and just check the valve covers clearance.

vettenuts

iTrader: (4)

That should never be done.

Google the Crane rocker arm installation instructions. They have very similar contact with the older perimeter style heads. They have instructions on how to correct the problem.

Do not grind the rockers, period.

Duffster

iTrader: (103)

Thanks for the replies all. I've opted to go stock rockers for now. I've got a set of 243's I'll be getting alot of work done on and will do the cleranceing inside of them. That I can do myself. Vettenuts, I'm referring to rockers when the big-boys use larger than stock springs. This has nothing to do directly with what I'm doing, just a reference that sometimes rockers get worked.

Again, thanks.

vettenuts

iTrader: (4)

Understand, but anyone who grinds the underside of the rocker to clearance springs doesn't understand the risk of doing so as this is the absolute worst place to grind a rocker. One of the LS1 engine books has that in it, very bad advice IMO.

JPH

iTrader: (2)

They look like a set of PRW shaft mount rockers? I would either grind the heads(with them off the motor) or just sell them and rebuild your stock units.