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Thread: Drag piped my Z

  1. #1
    Join Date
    Mar 2003
    Location
    Kansas
    --
    1,507

    Drag piped my Z

    I was saving this pipe for my big bore, but its gonna be a while till its done. I recently had this bike on a dyno, and the powercurve was wierd. It hits , and steadies out, dips down some, then goes back up till about 11,000 rpm, then falls off. It should go up, peak, then go back down in a spikier way then it does. We couldnt get an accurate reading on HP either, cause we couldn't hack into the coil for some reason. All our testing so far was done off wheel speed. It only showed 32 HP, but 38 is stock, and this motor has an all out drag port and polish. From the way it runs, we are guessing around 48-50 HP right now.
    The guy who runs the dyno is a YZ250 expert, and said he thinks its in the pipe. Here soon we are gonna grab a bunch of pipes, (both drag and regular) and start testing till we find the perfect one. I couldnt wait though, and had to put this one on to see how she runs.
    I havent had a chance to get it in the sand yet, so I dont know how it does. Im impressed with the bike as is, but according to him, I havent seen anything from this motor yet. He said once I get a pipe to match the port job, this thing will run nothing like a 250, and no one will believe me when I tell them its just a 250.
    Oh, and those are just spare tires and rims. I need to get some shots of it in the sand with the paddles on to show the roost this baby throws.
    Attached Thumbnails Attached Thumbnails 500 003.jpg   500 001.jpg  

  2. #2
    Join Date
    Oct 2003
    Location
    Watertown, New York 13601
    --
    3,382
    looks killer!
    1985 YAMAHA TRI-Z 250 sold

    2006 YFZ 450

  3. #3
    Join Date
    Oct 2003
    Location
    Hanston, Kansas
    --
    126
    Man chain that thing looks great. And im glad that headlight turned out so good, makes me feel better it looks that nice. Get that stroker done, that itty bitty 250 is a mean son-of-a-gun in the drags as it is. The only thing that came close was a alky shee.I wont even line up once your done with that new motor



    drew

  4. #4
    Join Date
    Mar 2003
    Location
    Kansas
    --
    1,507
    You still gonna try to make the Beaver races Drew?

  5. #5
    Join Date
    Aug 2002
    Location
    Jamul, CA. near San Diego
    --
    1,605
    Very nice Chainsaw....

    crazy sic...
    Gordons Well...#1 in this World, Home of "The Nick", "The Mutt", "The Husq" and "the Alky"

  6. #6
    Join Date
    Oct 2003
    Location
    Hanston, Kansas
    --
    126
    Dont count me out yet. Least im not giving up till the last second. Things have been pretty wild round hear lately. So we'll see what happens.



    drew

  7. #7
    Join Date
    Nov 2003
    Location
    Front royal, va
    --
    2,186
    jemco exhaust in houston tx. made my drag pipe, comes out the left, takes a few weeks to make, check out tri-shee's , i got the info from him, here is his pipe
    Attached Thumbnails Attached Thumbnails tri-shee.jpg  
    1985 With "86" Plastic's,Custom 12" Alluminum Extended Swing Arm,39MM PWK,"TRX" Filter,9 Paddle TALLER HALLER'S on 11" Wide Rim's,LOT'S of Stainless,LOT'S of Alluminum,LOT'S of PowderCoating,NOTHING Stock..

    FASTEST Tri-Z on The Planet...MAKE A NOTE !! and the SECOND FASTEST, WRITE IT DOWN AGAIN!!!

  8. #8
    Join Date
    Mar 2003
    Location
    Kansas
    --
    1,507
    I think Im gonna hack the silencer off. Its way to quiet, almost quieter then my old pipe I had on. It needs to be loud, so once I get the jump off the start, they dont bother trying to catch up, cause their ears are bleeding.. lol

  9. #9
    Join Date
    Aug 2003
    Location
    Eugene,Oregon well close to it
    --
    95
    looks like a death trap with three wheeles.

  10. #10
    Join Date
    Mar 2003
    Location
    Kansas
    --
    1,507
    whattya mean by that?

  11. #11
    Join Date
    Aug 2003
    Location
    Eugene,Oregon well close to it
    --
    95
    nothing ofensive it just looks like it could haul ass and a lot of people would miss judge it.

  12. #12
    Join Date
    Mar 2003
    Location
    Kansas
    --
    1,507
    thats why the pipes not big and chrome.. Im going for the "not so obvious its fast" kinda stealthy look.

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