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Author Topic: What type of nut to use for exhaust clamp?  (Read 578 times)
belfert
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« on: June 20, 2009, 07:44:25 PM »

I discovered today that the nut on the exhaust clamp on the turbo had fallen off.  What type of nut should I replace it with?

I suspect a nylon lock nut would melt.  Should I use an all metal lock nut?  It is fine thread so that may complicate things.
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Brian Elfert - 1995 Dina Viaggio 1000 Series 60/B500 - 75% done but usable - Minneapolis, MN
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« Reply #1 on: June 20, 2009, 07:50:02 PM »

Brian,

The best at this piont would probably be to get a couple of fine thread stainless nuts and double nut it. I have fought some of the locking nuts on and off. You will be OK with the double nut deal and you can get them on and off real easy.

Larry
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Ray D
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« Reply #2 on: June 20, 2009, 07:56:05 PM »

Exhaust nuts should be brass

Ray D
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gus
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« Reply #3 on: June 20, 2009, 09:29:27 PM »

Ray,

Brass is good for exhaust manifold studs but for clamps the metal lock nut is much better.

Brass cannot be tightened very much and clamps need a lot of torque compared to studs.

Another alternate is a drilled end clamp bolt and castle nut/cotter pin.
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