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Why do exhausts have springs?

Discussion in 'Technical and Troubleshooting Torque' started by MV, Sep 28, 2010.

  1. Silly question? Presumably, it's for a reason, it could all be done with clamps...

    For example, my stock exhausts have clamps, no springs, but pretty much every aftermarket exhaust I've seen has a slip together joint connecting the pipe to the muffler held on by springs...

    Does it serve a purpose?
  2. Seems to me that it's a better seal without gaskets, and easier to assemble. Probably prevents fractures during an off too.
  3. It also applies a constant force to the join so it doesn't ever just get slack from becoming "comfortable". A clamp can eventually work itself kinda loose when everything gets old and lethargic, making for not too good a seal.
  4. My stock muffler is fitted to the pipe with springs and I get exhaust leak (bloody pain in the ass to keep clean) as it's not a great seal! I think it's just silly, never had a problem with previous mufflers bolting on!
  5. Pretty much any bike/car in motoracing uses springs as it allows a quick and easy removal if it needs to be replaced.

    At tafe we had a spectrum formula ford ('06 open wheeler) which had the headers bolted to the engine, midpipes attached to that with a spring, then muffler on the end with a spring

    Could be assembled in less than 2 mins

    I can't comment on if its actually better or not, never looked into it