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  1. #1
    WE DONT DIAL 911 RDH's Avatar
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    Question should i get my cylinders honed??

    if ive got new pistons should i hone out the jugs to get a new crosscut or should they be fine.. or if i should have them honed whats a good clearence??


  2. #2
    Flying Scotsman's Avatar
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    Get them honed your allready in there.
    Clearance will not change if done correctly

  3. #3

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    Quote Originally Posted by RDH View Post
    if ive got new pistons should i hone out the jugs to get a new crosscut or should they be fine.. or if i should have them honed whats a good clearence??
    you can do them yourself with 300 emery paper and light oil just make sure you take off the shiny glaze off the bore so the new pistons and rings will bed inn, but do it the opposite way the piston strokes ie around the cercumferance,

  4. #4
    WE DONT DIAL 911 RDH's Avatar
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    Thumbs up

    ok cool. the old ones are gettin honed..

    i also got a brand new jug from yamaha. i shouldnt have to get that honed just put in the correct size piston right??

  5. #5
    JKR1300's Avatar
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    I've replaced pistons twice and have never had to rehone the jugs.
    There should be plenty of crosshatch left.
    Chrome plated jugs hold up really well.
    You need a special diamond cutter hone to do the job right.
    I wouldn't give it to my local machine shop.

  6. #6
    jdog800's Avatar
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    I also would not recomend honeing the cylinders. You risk removing matterial from the walls and lowering compression. New rings use scratches to seat themselves as the move up and down during the break-in process. Unless you have scoreing or large scratches that would affect the new rings. I would not rehone. Just my oppinion. JDog

  7. #7
    Hydrotoys's Avatar
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    Nikisil coatings and honing don't always go together once used. The coating can get thin toward the ports after time. If you hone them, then you run the risk of burning thru the coating, and into the aluminum. You won't even KNOW it until you run your ski, and it has some "mystery" light sezuire.

    I would recommend cleaning out the cylinders with a rag and some light oil. Inspect them with a bright light with your head buried right at the hole. Look for thin spots or aluminum deposition.

    Use murratic acid to clean any aluminum off the coating. DO NOT SAND aluminum off the coating or you will leave a high spot.

    If you use the murratic acid and the area turns black, that means your coating is too thin, and it's time to get them coated again.

  8. #8
    WATER WOODY's Avatar
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    Quote Originally Posted by hydrotoys View Post
    Nikisil coatings and honing don't always go together once used. The coating can get thin toward the ports after time. If you hone them, then you run the risk of burning thru the coating, and into the aluminum. You won't even KNOW it until you run your ski, and it has some "mystery" light sezuire.

    I would recommend cleaning out the cylinders with a rag and some light oil. Inspect them with a bright light with your head buried right at the hole. Look for thin spots or aluminum deposition.

    Use murratic acid to clean any aluminum off the coating. DO NOT SAND aluminum off the coating or you will leave a high spot.

    If you use the murratic acid and the area turns black, that means your coating is too thin, and it's time to get them coated again.

    Listen to Hydro..........this is some super good info.He has seen more cylinder walls than you can count.

  9. #9
    Moderator RX951's Avatar
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    yup

  10. #10
    WE DONT DIAL 911 RDH's Avatar
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    ok good deal, my two old ones are clean and the crosshatch is good. and the new one is well... new.

    i heard you should get them honed so theres an exact piston clearance

    if i dont have to thats sweet. i can start re-assembly....

    what do you guys recommend to do for first time start up....ive heard rub 2 stroke oil on the walls, and ive heard to use deisel but i dont know about that

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