I have a 300 i6 head fresh from machine shop.
4 rocker studs are 1/8 or 3/16 too long.

One is stripped

How do I correctly fix this dilema.



Thank
Fellas

 

were the studs like that before it went to the machine shop? if they were or not, those parts are integral components of the valve train. if they're extended that much, its possible that they have started to work themselves out of the head, as the stock studs are a press fit. the machine shop can replace them pretty easily. or you can add extra insurance by having the bosses cross drilled and drive in some roll pins. the next step up from that would be ARP threaded studs that require even more time and money at the machine shop. it all depends on your timeline and pocketbook.

 

I agree with Dude. Consider yourself lucky the studs have come to your attention now. Changing to ARP studs is inexpensive. Have your shop remove and tap the holes and install sbc studs (about $55 on Summit), using a thread sealer b/c they usually go into the water ports.

 

x2...didnt even think about the shebbie studs. the holes for them are usually a thru-hole that does go all the way into the jacket of the head. if you're gonna take it to a shop for this work, make sure they know what they're doing. the smaller the tolerance the better...and the sealant is important too. i prefer permatex high temp thread sealant. every shop has their preference though. best of luck to you and post back up when you have some results please.

 

I would add that it is best not to take the least expensive route. I once had a shop install their choice and 2 or 3 of the studs sheared at the adjusting nut. I was fortunate not to suck a valve.