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Join Date: May 2011
Posts: 407
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Exhaust nuts & bolts...
What is recommended for replacing the bolts in the exhaust system flanges?
Basic steel or stainless steel? |
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11-03-2020, 09:33 AM
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Join Date: Mar 2001
Location: Marysville Wa.
Posts: 22,463
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Regular old steel. SS can bind/gall on itself on removal.
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https://www.instagram.com/johnwalker8704 8009 103rd pl ne Marysville Wa 98270 206 637 4071 |
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11-03-2020, 09:56 AM
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i like to use regular steel nuts..The only think out of ordinary i do is .I change them every year one by one so they do not get rusty..is a cheap solution to prevent the oxidation ...
Ivan
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1985 911 with original 501 761 miles...807 506 km "The difference between genius and stupidity is that, genius has its limits". Albert Einstein. |
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11-03-2020, 12:04 PM
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I just replaced my steel muffler with a stainless Monty. There are some interesting threads in this forum about stainless. I suggest you read through them. I ended up using stainless bolts with silicon bronze nuts. Someone posted a chart showing how metals react to each other. The chart is very useful understanding how different metals interact.
The steel nuts and bolts I removed were SAE. They fit too tight. They were rusted. 3 came off with a hammer and a cheater bar. The last one fought me a bit.
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1966 912 to 2.7 Frankencar |
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11-03-2020, 12:31 PM
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Use a six point deep socket also.
Some thin wall nuts are 12mm, others are 13mm.
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1980 911 - Metzger 3.6L 2016 Cayman S |
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11-03-2020, 12:54 PM
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Join Date: Jan 2004
Location: Docking Bay 94
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For my Cat Converter and Muffler hardware I used stainless steel bolts and silicon bronze nuts. They will never rust, seize or gall. In fact, over ten years later they still look like new. I had the Cat Converter off just recently and the hardware came off easily with hand tools.
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Kurt |
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11-03-2020, 01:09 PM
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Posts: 522
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Read elsewhere on here that Chris @ TurboKraft recommends allen head SS bolts with copper nuts and high temp antisieze. That's what I went with.
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1987 M491 Widebody, Nautic Blue / Linen with a 1979 930 3.3L Cali Engine |
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11-03-2020, 02:19 PM
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Join Date: May 2015
Location: San Francisco & San Diego CA
Posts: 2,299
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Quote:
Exhaust Hardware Questions
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Frank Amoroso 911 M491 / M470 coupes: 1987 GP Wht / Blk "Apollo" 1987 Gemini Blue / Blk "Gemini" 1989 GP Wht / Blk "Vents" |
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11-04-2020, 04:12 AM
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Thank you for posting that link Frank. .. really superb info. Frank
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11-04-2020, 05:19 AM
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