Anyone have an extra Coffman’s 650 chamber?
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  1. #1
    I dream skis
    Join Date
    Mar 2003
    Location
    Shiocton, Wisconsin
    Age
    41
    Posts
    516

    Anyone have an extra Coffman’s 650 chamber?

    I’m looking for a Coffman’s 650sx/x2 main chamber if
    anyone has a spare. I have a cone and head pipe...I just
    need a main chamber. Thanks.
    2001 Superjet; R&D, Blowsion, UMI, Riva, Wetwolf, Ocean Pro.

    1987 650sx: Mariner, UMI, Neo Designes, R&D, Jetsports, Renthal, Hydro-Turf, Skat-Trak, Reworked stock pipe, 40mm carb, Wetwolf F/S cone.

    1986 JS300; lots of mods, fast for a 300...I think

    1987 X2: Rips pretty good and has some 80's flare.

  2. #2
    I dream skis
    Join Date
    Mar 2003
    Location
    Shiocton, Wisconsin
    Age
    41
    Posts
    516

    Re: Anyone have an extra Coffman’s 650 chamber?

    Quote Originally Posted by ACP View Post
    I’m looking for a Coffman’s 650sx/x2 main chamber if
    anyone has a spare. I have a cone and head pipe...I just
    need a main chamber. Thanks.
    Looking for a second gen chamber.
    2001 Superjet; R&D, Blowsion, UMI, Riva, Wetwolf, Ocean Pro.

    1987 650sx: Mariner, UMI, Neo Designes, R&D, Jetsports, Renthal, Hydro-Turf, Skat-Trak, Reworked stock pipe, 40mm carb, Wetwolf F/S cone.

    1986 JS300; lots of mods, fast for a 300...I think

    1987 X2: Rips pretty good and has some 80's flare.

  3. #3
    I dream skis Bob Gruen's Avatar
    Join Date
    Jun 2013
    Location
    Atlanta, Ga
    Posts
    505

    Re: Anyone have an extra Coffman’s 650 chamber?

    I have this:

    CoffmansPipe.jpg

    It has the formed stainless head-pipe so I am guessing it is first gen(?). The head-pipe has a pinhole right above the manifold interface that would need to be welded. This is why they were replaced with the cast design.

    CoffmansHeadPipe.jpg

    I'd sell it for $200 shipped. P.M. me if you are interested.

    Bob
    750 X2 build thread: http://www.pwctoday.com/showthread.php?t=463139
    Twin 550SXs build thread: http://www.pwctoday.com/showthread.php?t=468310

    My website and links to my film, The Hobby Stop: http://www.rannugmedia.com

    Classic 911 website: http://members.rennlist.com/bgruen/


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