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Thread: tri-z cylinder prep?

  1. 05-12-2007, 10:15 PM #1
    pickleweasel_00's Avatar
    pickleweasel_00
    pickleweasel_00 is offline Just Too Addicted Arm chair racerJust too addicted
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    tri-z cylinder prep?

    about to get the cylinder back from the machine shop for my tri-z. So i've read that all the edges on the ports need to be chamfered. If I need to do this, what is the best method? Also, what tools, or where do you guys get your tools for porting and polishing? (in case I need to port match at all) And, did anybody do the phase 1 wrench report yourselves? saw there wer some measurements to follow, didn't know how precise they need to be, I may attempt this mod befor i put it back together Anyways, thanks for the help!
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  2. 05-12-2007, 10:20 PM #2
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    pickleweasel_00
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    also, for those of you with the phase 1 mods, how does it compare to stock? are you happier with it, is it worth it, would you reccomend it, etc, etc??
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  3. 05-12-2007, 10:33 PM #3
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    tecat-z
    tecat-z is offline Power User Roostin Away
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    All of your chamfer work should have been done by the machine shop. You should get it back in ready to assemble and run condition.
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  4. 05-12-2007, 11:40 PM #4
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    pickleweasel_00
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    hope so, the guy doing it is a friend and not sure if he's dealt with many two strokes, mainly racing engines. No doubts on boring it for the new piston at all though. But i will talk to him monday, he's been about five kinds of busy lately
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  5. 05-13-2007, 04:02 PM #5
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    any info on porting tools? think I'll try and clean things up a bit, never had any done on it yet
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  6. 05-13-2007, 05:06 PM #6
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    TimSr
    TimSr is offline Banned The day begins with 3WW
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    If your boring guy cant chanfer the ports, he is not a guy you should have doing your boring. Bore jobs dont cost nearly as much as the piston kit that will have a greatly reduced life, or premature failure if it is done improperly. It should come back ready to install.

    2 stroke porting is a specialized science that requires some expertise. Its not wise to just start grinding away, and by the tone of your post it does not sound like you have expertise in this field. Give Jason Hall a PM. He is an expert, and his prices are very reasonable. As for polishing, experts argue amongst themselves about whether or not smoothing intake ports hurts or helps. Most will agree that there are some benefits from smoothing the exhaust port. This can be easily done with a piece of sandpaper. Also smooth out weld lips in your exhaust pipe where it connects to the jug.
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