Studded your exhaust?

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  • Macmatic
    • Feb 2026

    #1

    Studded your exhaust?

    I studded my head in the hopes of never having to drill out another &*#@% broken bolt and I found two things that might be of use.

    1: Exhaust manifold studs from a Volvo 240 are about perfect as far as depth into the head and threaded length out of the head. I just happened to have a coffee can of these.

    2: Use Honda (auto) manifold nuts. These are castellated (split into 6/8 parts) on the end and grip the stud so they wont vibrate off.

    I figure with studs and these nuts I can slather on the anti-seize and not have to worry about stripped/broken bolts anymore.

    I had the studs already and I got the nuts in a "pick your own" junkyard along with a bunch of other hardware. Daewoo cars have some nice black socket head cap screws in 8x1.25 too.

    /\/\ac
  • Macmatic

    #2
    Just an update on this...

    Not ALL Hondas use these nuts so you might have to look at a few to find them. They seem to be plated with something too as very few were rusted at all.

    /\/\ac

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    • Cracker

      #3
      Great tips!

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      • Jethro
        Forum LongTimer
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        • May 2002
        • 17888
        • The only Henniker on earth

        #4
        Go to Fastenal. Almost every big city has one, they have every fastener know to man...
        Currently bikeless
        '81 GS 1100EX - "Peace, by superior fire power."
        '06 FZ1000 - "What we are dealing with here, is a COMPLETE lack of respect for the law."

        I ride, therefore I am.... constantly buying new tires.

        "Tell me what kind of an accident you are going to have, and I will tell you which helmet to wear." - Harry Hurt

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        • Guest

          #5
          I didn't have much luck at Fastenal in Longmont, but Colorado Fastener had a good selection of metric. AAA Metrics in Denver has an even better selection. Ray

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