Turbo to Manifold Bolts

[DieselSlug]

I will be installing a WH1C on my truck within a few weeks. I just removed my GM-4 that has been on there for 3 years. The nuts for the studs were rotted badly, so from here on out im going stainless with all hardware. Im going to get 4 stainless steel bolts and nuts, is there any different grade i should get due to the high heat the bolts and nuts will endure? I know stainless is brittle, but do they make certain grades?

 

[3500GMC]

Use a nickel based anti-seize (high temp) on SS fo' sure...

There are different grades. The most common (18-8) is roughly like a grade 3 normal steel. 316 SS is close to grade 5... I think..

It's softer than what you'd think. Get too hard of a bolt and the heads start popping off with a lot of heat.

 

[DieselSlug]

Back when i built my engine i wanted to use SS bolts for the manifolds. But was worried about the heat they would endure. So i stuck with steel and am starting to pay for it.

So what do you think i should go with? Just use regular old SS bolts off the shelf or look for the higher grade?

 

[3500GMC]

I've used 18-8 on a SBC with iron manifolds with good success. Even grade 8 will hold up better as they are a better alloy.

 

[tanman_2006]

I know it would be expensive but would it be worth giving arp or similar company a call?

 

[DieselSlug]

I know it would be expensive but would it be worth giving arp or similar company a call?

Wonder if they make some kind of kit like this?

Here is a site i was just reading:

http://forums.pelicanparts.com/pors...7486-stainless-steel-bolts-stock-exhaust.html

http://coloradok5.com/forums/showthread.php?t=265629

On the fence...

 

[DieselSlug]

Another, looks like im just gonna go with a better grade bolt and copper never-sieze.

http://www.shoptalkforums.com/viewtopic.php?f=1&t=128010