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Registered
Join Date: Jan 2016
Posts: 299
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Exhaust hardware…..what to do?
Hi Guys,
I took my entire exhaust system (heat exchangers to muffler) off to sand blast, repaint, and reinstall. I know that I need to replace the gaskets with new ones, but should I do this with the nuts and bolts too? If so, do I source the nuts and bolts from the "Miscellaneous" section our Host provides? Also, I hear talk of copper nuts etc. What type of bolt and nut material is best? Any other tips for reinstallation such as anti-seize? Thanks! |
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11-21-2016, 04:27 PM
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Member 911 Anonymous
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Torque only to spec, it will feel not enough but over torquing will warp the flanges and cause leaks, so be careful.
As a matter of fact, check the flanges on the the cross overs, cat if applicable and muffler, you want to insure they are completely flat for installation. You can use a piece of granite and 80 grit sand paper to flatten them out or send to a machine shop. If you are expecting to do future servicing, go with copper nuts but Host's nuts and barrel nuts are just fine.
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'85 Carrera Targa Factory Marble Grey/Black * Turbo Tail * 930 Steering Wheel* Sport Seats * 17" Fuchs (r) * 3.4 * 964 Cams * 915 * LSD * Factory SS * Turbo Tie Rods * Bilsteins * Euro Pre-Muff * SW Chip on 4K DME * NGK * Sienes GSK * Targa Body Brace PCA/POC |
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11-21-2016, 04:55 PM
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Registered
Join Date: May 2002
Location: Portland, Oregon
Posts: 12,668
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Check this thread: Where to buy Si/Br nuts? (for exhaust)
An industrial supply house or a well stocked Hardware store (not Lowes) usually has items like this. For me it is an ACE Hardware, Fastenal, Industrial Fasteners, or Tacoma Screw. Failing that, there is always McMaster-Carr (www.mcmaster.com).
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Harry 1970 VW Sunroof Bus - "The Magic Bus" 1971 Jaguar XKE 2+2 V12 Coupe - {insert name here} 1973.5 911T Targa - "Smokey" 2020 MB E350 4Matic |
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11-21-2016, 04:57 PM
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Registered User
Join Date: Jul 2014
Location: Portland, OR
Posts: 125
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You can also get hardware kits for the muffler and pre-muffler from M&k.
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1989 911 3.2 Targa Guards Red/Cashmere |
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11-21-2016, 06:15 PM
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Registered
Join Date: May 2004
Location: Boulder, Colorado
Posts: 7,275
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A good upgrade is replacement of the barrel nuts with flange nuts. Easier to work with - you can use 1/4" socket stuff on them. For sure use anti-seize with whatever you use. I like the copper appearing ones, though I don't think they have any critical advantage over ordinary steel, which is what the barrel nuts are,
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11-21-2016, 06:32 PM
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Marble Grey
