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Thread: Standard yz250 rings on wiseco piston, and re-jetting for grab holes

  1. #1
    Join Date
    7th September 2008 - 18:48
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    2008 Yamaha YZ250
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    Hamilton
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    Standard yz250 rings on wiseco piston, and re-jetting for grab holes

    1.

    bought a whole lot of yz parts, came with a spares kit minus the piston, be good to freshen it up with a new set of rings but has a wiseco in at the mo. question is can i run stock rings on the wiseco (its a twin ring)

    2.

    the main reason i bought these parts was for the airbox, so i could have a spare to chop up. it runs fine with the extra air, no bogging etc, but (correct me if im wrong) it will be running leaner (?) with the extra air? should i be swapping jets around even though it runs fine? (a whole lot of jets came with these parts as well )

    thanks

  2. #2
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    2nd August 2006 - 22:17
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    Quote Originally Posted by honda_power View Post
    1.

    bought a whole lot of yz parts, came with a spares kit minus the piston, be good to freshen it up with a new set of rings but has a wiseco in at the mo. question is can i run stock rings on the wiseco (its a twin ring)

    2.

    the main reason i bought these parts was for the airbox, so i could have a spare to chop up. it runs fine with the extra air, no bogging etc, but (correct me if im wrong) it will be running leaner (?) with the extra air? should i be swapping jets around even though it runs fine? (a whole lot of jets came with these parts as well )

    thanks

    No you cant there will be differences for sure. thicker, thinner, different size pistion a,b,c
    [SIGPIC][/SIG

  3. #3
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    7th September 2008 - 18:48
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    thanks, didnt think so, wiseco dont have a,b,c pistons though

  4. #4
    Join Date
    21st May 2007 - 18:03
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    Quote Originally Posted by honda_power View Post
    thanks, didnt think so, wiseco dont have a,b,c pistons though
    did he mean abc for stock piston/rings?
    Broken bikes wanted, pm details

  5. #5
    Join Date
    7th September 2008 - 18:48
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    yeah sorry must have been half asleep

    any advice on the jetting? leave it/play around with it?

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