Thread: New Head Gaskets

I have had two sets of (composite)gasket failures at 70lbs(first bolts then studs), at some stage Garry you just have to bite the bullet.


There must have been a reason ARP increased the rating,

So its the strength of the alloy around the stud thats the sticking point,,

Gary did you have my kit or the older one for Buick? I know the older one didn't use all the block threads and the new one does....I dry ran a stud in last night and it bottomed out by hand with the top thread of the studs being about 1mm below the deck...more threads less likely to strip.

Also what do you guys reckon about a very thin smear of GM Head Stud Sealer on the coarse end only....ie not enough to cause hydraulic lock? I am also planning not to invest in a head chaser but rather to use a $10 tap using CRC then cleaning the holes and deck with brake cleaner. Cheers

Seriously there are so many opinions on these...

http://www.fourwheeler.com/project-v...-discovery-ii/

Cheers

I think it might depend on gasket material too. Unless the surfaces are perfect I just can't see 60lb in that article clamping an MLS enough to seal...Cheers

late I know, but
Engine Refresh (top end) | PaulP38A.com

grease on the tap(finishing, not starting!) will trap most of the crud,
if that trial fitting went fine, I might test another,, but they all should be similar in amounts of crud, it is only the threads at the bottom where the bolts didnt reach that are of concern?
is there also a concern with sealing the stud?

For what reason are you using studs?

60?!?!,, omg,,

I've posted about that in Tech,, maybe some of our cleverer people will explain,,