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Old 06-17-2019, 01:16 PM   #11 (permalink)
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I don't put stainless on the exhaust system.
The stainless nuts and bolts always seize together.
Germans use stainless bolts and studs and brass nuts, that seems to work. 304 Stainless has bad cohesion problems.

You may be able to get a header.
Might not have a converter but who cares.

My friend put a header on his Toyota Tacoma. He found places that sold them for $200 to $300 but we're always sold out, a new dealer manifold was $430.
He got a new header for $120.

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Old 06-17-2019, 01:58 PM   #12 (permalink)
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Quote:
Originally Posted by oil pan 4 View Post
I don't put stainless on the exhaust system.
The stainless nuts and bolts always seize together.
Germans use stainless bolts and studs and brass nuts, that seems to work. 304 Stainless has bad cohesion problems.

You may be able to get a header.
Might not have a converter but who cares.

My friend put a header on his Toyota Tacoma. He found places that sold them for $200 to $300 but we're always sold out, a new dealer manifold was $430.
He got a new header for $120.
Use the copper high temp anti-seize to help mitigate that, double nut it if you're worried about it being too lubricidous and walking the nuts off over time. Or as you said brass, bronze, or even plain steel nuts will not gall to stainless, and sometimes even different types of stainless will work (ie. 316 [standard hardware stainless] bolts with inconel nuts.)
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Old 06-17-2019, 03:26 PM   #13 (permalink)
EV convert
 
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Join Date: Jul 2011
Location: NewMexico (USA)
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Sub - '84 Chevy Diesel Suburban C10
SUV
90 day: 19.5 mpg (US)

camaro - '85 Chevy Camaro Z28

Riot - '03 Kia Rio POS
Team Hyundai
90 day: 30.21 mpg (US)

Bug - '01 VW Beetle GLSturbo
90 day: 26.43 mpg (US)

Sub2500 - '86 GMC Suburban C2500
90 day: 11.95 mpg (US)

Snow flake - '11 Nissan Leaf SL
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90 day: 124.63 mpg (US)
Thanks: 175
Thanked 2,262 Times in 1,745 Posts
Double Nutting with free spin nuts almost never works.
I normally use steel nuts as brass isn't always available.
The advantage of 304 on 304 is it almost never backs off lol.
316 are harder to find and are more expensive.
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1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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Old 06-17-2019, 03:43 PM   #14 (permalink)
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Quote:
Originally Posted by oil pan 4 View Post
Double Nutting with free spin nuts almost never works.
I normally use steel nuts as brass isn't always available.
The advantage of 304 on 304 is it almost never backs off lol.
316 are harder to find and are more expensive.
I have never come across 304 hardware, it's machinability isn't very good, and pretty much only is in use because it's relatively friendly to forming, cheap, and can be welded.

The vast majority of stainless hardware is 316.

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