Exhaust manifold studs: shoulder or no?

[Redtail]

I ordered a set of exhaust manifold studs from Pelican and received continuously threaded studs with no shoulder. Are these ok to use or should I find some studs with a shoulder? I've read conflicting statements on the internet. Thanks!

[2002iii]

Realoem.com shows studs with a shoulder, like the factory ones.

 

IIRC some of the holes go through to the water or oil passages. So you don't want them to go in too far.

[TobyB]

Shoulders are better, as iii mentions, because the things can just sneak up into the head.

 

I have found them in local hardware stores- the bigger Troo Valyoo and Ace have

assortments of 'automotive studs' for a couple bocks apiece (ooch) but they're shouldered.

 

Resist the urge to use long setscrews- they break.  Ask me how I know this...

nah, you can figure it out.

 

t

 

[Redtail]

Ok thanks guys. I did find some at the good local hardware store but the head side only had 10mm of threads. They would probably work but I'll just reorder the correct OEM ones and work on other projects in the meantime.

 

Cheers