Exhaust studs - anything to stay away from? Options

[Scott S]

Hi All –
Getting ready to order new exhaust studs for the 6 conversion. I need to measure the flanges on my headers, then make the call. Anything to stay away from in terms of stock vs stainless, etc etc etc?

Aren’t they just M8-1.25’s? I know even my local Ace Harware had them in various lengths – but I don’t know what they were made of.


Thanks!!!
Scott S
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[gothspeed]

I do know stock 911SC and later exhaust flanges are just shy of 1" thick, though that requirement may change depending on what kind of exhaust you run.

As for hardware most 'automotive,, studs available at hardware/automotive stores are designed for general auto use and will work for those uses. For hi temp make sure they are the same grade or better. But of course one should always get the best one can find and or afford.

General stainless tip; Do not use stainless nuts on stainless bolts, they will eventually if not imediately gall/seize. Especially under higher torque.