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Thread: Tri-Z 250 Exhaust Questions??

  1. #1
    Join Date
    Sep 2009
    Location
    Charlotte, NC
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    36

    Tri-Z 250 Exhaust Questions??

    Can someone measure the ID of the pipe flange and the OD of the cylinder where it mates to? I want to see what size gap is between a pipe and the cylinder without any gaskets.

    Thanks

  2. #2
    Join Date
    Sep 2009
    Location
    Charlotte, NC
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    36
    Anyone have some spare parts laying around they could check for me? It would be greatly appreciated.

    I think i have a solution to the leaking exhaust problem, but i need to know some measurements to see if it will work!

    Thanks Guys!

  3. #3
    Join Date
    Aug 2004
    Location
    Ab Canada
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    4,368
    I will take some Tomorrow when i get back to the shop, Mine had an old DG and the flange on the pipe was WAY to big and leaked like a sieve. Had a new one made and welded on.
    1985 Tri-Z-

    Quote Originally Posted by mywifeknowseverything
    Just hit the Freakin Gas and Hold on!!!!!

  4. #4
    Join Date
    Sep 2009
    Location
    Charlotte, NC
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    36
    Quote Originally Posted by MTS View Post
    I will take some Tomorrow when i get back to the shop, Mine had an old DG and the flange on the pipe was WAY to big and leaked like a sieve. Had a new one made and welded on.
    Thanks! So the DG Pipe Flange is not the same size as the stock pipe flange?

    Could you post these measurements:
    OD of the Cylinder Piece
    ID of the Pipe Flange

    Then we will see if people with other pipes can chime in on the ID of their Flanges.

  5. #5
    Join Date
    Jun 2006
    Location
    Illinois
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    491
    I'll try and check it after work today. The Tri-z people need something to fix this besides silicone.

  6. #6
    Join Date
    Sep 2009
    Location
    Charlotte, NC
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    36
    Quote Originally Posted by clutchcargo View Post
    I'll try and check it after work today. The Tri-z people need something to fix this besides silicone.
    Thanks! I 100% agree!

    I really hope there is a gap around .16" or 1/8 to 3/16 or larger.

  7. #7
    Mosh is offline I'm the one with all the 2 stroke around here! The day begins with 3WW
    Join Date
    Jun 2005
    Location
    na
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    5,702
    I have a brand new DG extreme pipe and 2 jugs I can measure for you.
    Unfortunately, I doubt you want measurements with a tape measure and my dial calipers are at the shop till Monday.
    I will post some readings next week for you.
    I am sure you will be dealing with almost a 1/8 tolerance, especially with the lighter steel pipes, like the Cobras, Phase 5, and Answer pipes. Those usually fit really sloppy because the mild steel flares out from years of use. I dont have any lighter pipes I can measure for you though.
    Here is where my long useless list of stuff nobody cares about should go...


    Proudly NOT a member of

    "Team on the Teat"

  8. #8
    Join Date
    Aug 2005
    Location
    Lockport, NY
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    2,395
    Just took some measurements. With Calipers of course.

    OD or Bell of cylinder = 55 mm. Obviously this varies on cylinders due to condition. Mine measurement was taken from a NOS cylinder.

    Phase Five pipe = 59.50 mm
    Stock = 59.50 mm
    DG = 58.50 mm

    Hope this helps!

  9. #9
    Join Date
    Sep 2009
    Location
    Charlotte, NC
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    36
    Quote Originally Posted by honda250sx View Post
    Just took some measurements. With Calipers of course.

    OD or Bell of cylinder = 55 mm. Obviously this varies on cylinders due to condition. Mine measurement was taken from a NOS cylinder.

    Phase Five pipe = 59.50 mm
    Stock = 59.50 mm
    DG = 58.50 mm

    Hope this helps!
    Great!! That is a .17" gap on the stock/phase 5. I can work with that....

    Im not sure on the DG... why did they have to go and be different?!

    Can you take one more measurement for me? What is the length of the "Bell" of the cylinder? Does the pipe join the bell perfectly?

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