Buyer beware

Discussion in 'Motorbike Technical Discussion' started by Larry Blanchard, May 22, 2012.

  1. FYI:

    A few months ago I ordered an Emgo muffler for my old SR500 through
    Amazon. The web page said it would fit a 1.75" exhaust pipe. It didn't.
    I returned it.

    After a short hiatus while busy with other things, I tried again. Amazon
    showed a Helix Dunstall replica that again was specified to fit up to a
    1.75" pipe. But having been taken once, I emailed the manufacturer to
    check on this. I was assured it would fit so I ordered it.

    You know the end of the story - the #@$%! thing was too small as well!

    When even the manufacturer gives false info, I tend to get discouraged.
    Don't know what I'll do next. Maybe visit the local salvage yard with a
    digital caliper.
    Larry Blanchard, May 22, 2012
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  2. Larry Blanchard

    Mark Olson Guest

    Is the 1.75" exhaust pipe the stock size for your SR500?

    If the muffler wasn't too far off, I would have tried one of these on it:
    Mark Olson, May 22, 2012
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  3. I don't know how well that would work on the slotted end of a muffler,
    but thanks for the suggestion. So far I have 3 alternatives.

    1. The manufacturer has offered to swap me for a slightly different

    2. I could return it through Amazon and start over.

    3. I could get an adapter and use the muffler as is.

    Your suggestion gives me a 4th option.

    I'm leaning towards number 3. The local gurus claim that necking down
    from 1.75" to 1.625" won't make a noticeable power difference to a 500
    single. And I like the Dunstall type as it's 26" long and my current
    muffler is 27".

    In answer to your question, I think 1.75" is stock. Mine is not the
    original tailpipe, but all I did was replace a double wall pipe with a
    single wall pipe.

    Thanks again for the idea.
    Larry Blanchard, May 23, 2012
  4. Larry Blanchard

    Mark Olson Guest

    I wouldn't worry one iota about the performance hit, if any. The aftermarket
    can probably is less restrictive than stock, and my guess is the exhaust
    pipe even at 1 - 5/8" is never the source of backpressure, whatever baffling
    you have, is.
    Mark Olson, May 23, 2012
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