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Thread: Dead Horse? power valve TRI-Z

  1. #1
    Join Date
    Sep 2012
    Location
    Buffalo, NY 14221
    --
    55

    Dead Horse? power valve TRI-Z

    So I ordered some parts off the good ol evilbay...yz250 top end. It should be here monday. I dont know if anyone saw it listed but it was listed as a basically complete power valve conversion. You can still find it if you search tri-z cylinder in completed listings... I know there is already a ton of stuff on the site considering the swap but I am sure I will have questions... here's probably my first of many...anyone see the lot I bought? Decent? I bought it on a whim and he will take refunds if it does not work or fit so I am not to worried. Looks like I will need a few more things than he said I would like the power valve cover seal. As far as I can tell its discontinued from yamaha. I asked the seller after purchase what year yz its off of and waiting on a reply. Wondering what other years seal will work? Looks like the intake on the jug comes straight out with a slanted rubber intake...looks early not like the 88/89...possible 83/84 yz top end? Will the straight rubber intake off an 86/87 bolt up? Thanks...hope I am not beating a dead horse here....if someone can post links to swaps rather than me spending hours looking for good info that would be great as well!

  2. #2
    Join Date
    Sep 2012
    Location
    Buffalo, NY 14221
    --
    55
    ok so I kinda posted in the wrong spot... havent signed on in a couple years at least...my bad... help would still be appreciated

  3. #3
    Join Date
    Oct 2003
    Location
    Las Vegas, NV.
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    2,530
    You've probably already found this thread, but just in case you haven't, here ya go: http://www.3wheelerworld.com/showthr...i-z-PowerValve

    Good luck with the project.
    Red Rider's Sand Machine Updated 07/23/14

  4. #4
    Join Date
    Mar 2013
    Location
    Baldwin, Wi
    --
    603
    I've got 85 yz components on mine so I could answer any questions you have with that. Post up a link to what you bought.
    85 Tri-z Power valve on Inverts
    85 Tri-z Basket Case
    01 gsxr750 engine/Tri-z frame (long long way from complete)

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