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Thread: calling the engine gods

  1. #1
    Join Date
    Aug 2006
    Location
    Arlington, Wa
    --
    1,027

    calling the engine gods

    awright, here we go, I got my 85 tri-z opened up, the top of the piston is burnt on the intake side, and the #2 ring almost snapped getting it off. There was no moving it at all when on the piston by hand, I had to use a pick to free it up. The piston is a .50 over OEM. the piston has alot of markings from slapping around in the jus as well. the jug measures at 69.10 mm

    My question to you is this...a wiseco .60 over, or just go .80 over. Either way, I'm having the piston coated by Performance Coatings in Auburn Wa.

    Does anyone know of any other piston options, like Pro-X or Vertex?
    Charlie Don't Trike

    85' ATC 350X
    85' ATC 250SX
    85' YTM 225DX (sweetie)
    84' ATC 200 auto X
    85' ATC 70
    85' YT 60


    My Partz Auctions

  2. #2
    Join Date
    Jan 2004
    Location
    Palmetto,Florida
    --
    2,300
    i run a Pro-X "YZ" Piston in my TRI-Z
    "07" DR650 Suzuki Dual Sport

  3. #3
    Join Date
    Aug 2006
    Location
    Arlington, Wa
    --
    1,027
    Quote Originally Posted by Yamahondaman
    i run a Pro-X "YZ" Piston in my TRI-Z

    is it just an 85-86 yz piston ?
    Charlie Don't Trike

    85' ATC 350X
    85' ATC 250SX
    85' YTM 225DX (sweetie)
    84' ATC 200 auto X
    85' ATC 70
    85' YT 60


    My Partz Auctions

  4. #4
    Join Date
    Jan 2004
    Location
    Palmetto,Florida
    --
    2,300
    Yup.... got it from T.D.R. In Pompano,Fla... he bored the Cyl. too ..
    AWSOME Work !!! the "YZ" Piston Seems Faster in the TRI-Z
    "07" DR650 Suzuki Dual Sport

  5. #5
    Join Date
    Jun 2006
    Location
    Illinois
    --
    491
    Good info to know...Thanks.

  6. #6
    Join Date
    Aug 2006
    Location
    Arlington, Wa
    --
    1,027
    just ordered my 69.5mm Pro-x thru LA Sleeve.......cheap
    Charlie Don't Trike

    85' ATC 350X
    85' ATC 250SX
    85' YTM 225DX (sweetie)
    84' ATC 200 auto X
    85' ATC 70
    85' YT 60


    My Partz Auctions

  7. #7
    Join Date
    Jan 2004
    Location
    Palmetto,Florida
    --
    2,300
    TRI-Z or "YZ" ????
    "07" DR650 Suzuki Dual Sport

  8. #8
    Join Date
    Aug 2006
    Location
    Arlington, Wa
    --
    1,027
    Quote Originally Posted by Yamahondaman
    TRI-Z or "YZ" ????

    they don't offer the trike flavor, so it is a YZ as you mentioned this morning, I did some more x-referencing and went for it. Gonna have the jug ported as well. Can't ride a totally stock trike in the sand, right?
    Charlie Don't Trike

    85' ATC 350X
    85' ATC 250SX
    85' YTM 225DX (sweetie)
    84' ATC 200 auto X
    85' ATC 70
    85' YT 60


    My Partz Auctions

  9. #9
    Join Date
    Jan 2004
    Location
    Palmetto,Florida
    --
    2,300
    Stock SUX.............. NOTHING Stock !!!
    "07" DR650 Suzuki Dual Sport

  10. #10
    Join Date
    May 2005
    Location
    Southern NH
    --
    1,489
    Quote Originally Posted by Yamahondaman
    Stock SUX.............. NOTHING Stock !!!
    Tiger 500??????

    I got a piston from LA sleeve recently, very happy with it!!
    "I have but one lamp by which my feet are guided, and that is the lamp of experience." -Patrick Henry

    NEW ENGLAND ATC owners please join!:http://www.3wheelerworld.com/group.php?groupid=27

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