List with parts you will need to upgrade your TW to 214, 225 and up to 250 cc
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Thread: List with parts you will need to upgrade your TW to 214, 225 and up to 250 cc

  1. #1
    Senior Member macbig2k1's Avatar
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    List with parts you will need to upgrade your TW to 214, 225 and up to 250 cc

    Hi at all,

    I've seen very often the question:
    How can I get more cc??

    Here are some combinations without (200 crank - 55.7 mm stroke) and with changing the crank shaft (225 crank - 58.0 mm stroke) up to 250 cc.
    Important, you'll never have to change the cylinder head. The 225, 230 and 250 (YFB250, YFM250 [NOT Raptor]) cc engines does have the same cylinder head.

    without / with changing the crankshaft:
    214.4 cc / 223.2 cc
    - 70 mm piston with 10.25:1 compression ratio
    - original cylinder can be used
    OR
    - 225/230 cylinder (70.00 mm std. bore) can be used, but than you have to use the first oversize (70.50 mm)

    220.5 cc / 229.6 cc
    - 71 mm piston with 8.7, 9.5:1 or 10.25:1 compression ratio
    - original cylinder can be used, but needs new 225/230 sleeve
    OR
    - 225/230 cylinder (70.00 mm std. bore)
    OR
    - 250 cylinder (71.00 mm std. bore) can be used, but than you have to use the first oversize (71.50 mm)

    226.8 cc / 236.1 cc
    - 72 mm piston with 8.7:1 or 9.5:1 compression ratio
    - original cylinder can be used, but needs new 225/230 sleeve
    OR
    - 225/230 cylinder (70.00 mm std. bore)
    OR
    - 250 cylinder (71.00 mm std. bore)

    233.1 cc / 242.8 cc
    - 73 mm piston with 9.5:1 compression ratio
    - original cylinder can be used, but needs new 225/230 sleeve
    OR
    - 225/230 cylinder (70.00 mm std. bore)
    OR
    - 250 cylinder (71.00 mm std. bore)

    239.6 cc / 249.4 cc
    - 74 mm piston with 9.5:1 compression ratio
    - original/225/230 cylinder can be used, but needs new 250 sleeve (74 mm std. bore)


    Compatible cylinders:
    70 mm std. bore
    -> 29U-11310-03-00
    1986 - 1987 TT225
    1986 - 1988 YFM225
    1983 - 1986 YTM225
    -> 3RW-11310-00-00
    1999 TT225
    1999 - 2004 TTR225
    1992 - 2000 XT225
    -> 4VW-11310-00-00
    2005 - 2013 TTR230
    -> 5MP-11311-00-00
    2001 - 2002 XT225
    -> 5RK-11311-00-00
    2003 - 2007 XT225

    71 mm std. bore
    -> 3GH-11310-00-00
    1989 - 1991 YFM250 (not Raptor)
    1989 YFU1W
    -> 4BD-11310-00-00
    1992 - 2000 YFB250
    1998 - 2004 YFM250 (not Raptor)
    -> 5XG-E1310-00-00
    2005 - 2009 YFM250 (not Raptor)


    cylinder sleeves:
    70.00 mm std. bore
    YA-812 - LA Sleeve
    3143FA - Advanced Sleeve
    1986 - 1987 TT225
    1986 - 1988 YFM225
    1983 - 1986 YTM225
    1999 TT225
    1999 - 2004 TTR225
    1992 - 2000 XT225
    2005 - 2013 TTR230
    2001 - 2007 XT225

    71.00 mm std. bore
    YA-5101 - LA Sleeve
    3315FA - Advanced Sleeve
    1989 YFU1W
    1992 - 2000 YFB250
    1989 - 2009 YFM250 (not Raptor)

    74.00 mm std. bore
    YA-5400 - LA Sleeve
    1996-06 TT-R250
    YA-5679 - LA Sleeve
    15.2308 - ProX
    2008.... XT250
    2008.... YFM250 Raptor


    Compatible 225 cc crank shafts (58.0 mm stroke):
    -> 1KH-11400-00-00
    1986 - 1987 TT225
    -> 3RW-11400-00-00[/B]
    1999 TT225
    1999 - 2013 TTR230
    1992 - 2000 XT225
    -> 5MP-11400-00-00
    2001 - 2007 XT225
    Attention:
    - This crank needs a different timing chain and sprocket
    - here are the needed parts:
    timing chain
    -> 5MP-12176-00-00

    2001 - 2007 XT225
    -> 5XT-12176-00-00
    2008 - 2013 YFM250 Raptor
    2008 - 2013 XT250
    timing chain sprocket
    -> 94591-87104-00

    2001 - 2007 XT225
    -> 94582-19104-00
    2008 - 2013 YFM250 Raptor
    2008 - 2013 XT250


    Compatible pistons:
    Wiseco 10.25:1 Yamaha TTR225 / TW225 / XT225 / XT230 / YFM225 / YTM225
    70.00 mm - 4312M07000
    70.50 mm - 4312M07050
    71.00 mm - 4312M07100

    TKRJ 9.5:1 Yamaha TTR225 / TW225 / XT225 / XT230 / YFM225 / YTM225
    -->> Made like OEM / Yamaha piston
    -->> Pistons over +1.00 are not always available
    70.00 mm - AY0880X (PY1160X)
    70.25 mm - AY0881X (PY1161X)
    70.50 mm - AY0882X (PY1162X)
    70.75 mm - AY0883X (PY1163X)
    71.00 mm - AY0884X (PY1164X)
    71.25 mm - AY0885X (PY1165X)
    71.50 mm - AY0886X (PY1166X)
    71.75 mm - AY0887X (PY1167X)
    72.00 mm - AY0888X (PY1168X)

    Wiseco 8.7:1 Yamaha YFM250 (not Raptor) / YFB250
    71.00 mm - 4675M07100
    71.50 mm - 4675M07150
    72.00 mm - 4675M07200

    Woessner 9.5:1 Yamaha YFM250 (not Raptor) / YFB250
    71.00 mm - 8659DA
    71.50 mm - 8659D050
    72.00 mm - 8659D100
    72.50 mm - 8659D150
    73.00 mm - 8659D200

    Yamaha 9.5:1 XT250 2008-2012
    The XT250 2013, 2014... piston will NOT fit, this years does have a 17 mm piston pin.
    The Raptor 250 pistons will also not fit. Same problem, 17 mm piston pin.
    74.00 mm
    3C5-11631-00-A0 - piston
    4XV-11603-00-00 - piston ring set
    5H0-11633-00-00 - piston pin
    or
    15A-11633-00-00 - piston pin
    93450-17044-00 - piston pin clip (2 needed)

    Fitting top end gasket kit for 74.00 mm piston
    W5745 - Wiseco for YFB250 / YFM250 (not Raptor)


    Regards,
    Sebastian
    Last edited by macbig2k1; 05-08-2017 at 02:47 PM. Reason: List updated with pistons

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    Senior Member Borneo's Avatar
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    You are such an impressive guy.
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    Senior Member macbig2k1's Avatar
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    Just a small collection of my knowledge, collected in the last years.
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    Senior Member vanillagorilla1's Avatar
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    good god thats a great list. I cant wait to read the piston list too. I read someplace about having to make a cylinder base spacer. In any event this is great!
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    Senior Member ronnydog's Avatar
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    Quote Originally Posted by macbig2k1 View Post
    Just a small collection of my knowledge, collected in the last years.
    Some day I will be in Germany and will stop by and enjoy you brilliance!

    Ronnydog
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  7. #6
    Senior Member macbig2k1's Avatar
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    I've added pistons to the list.

  8. #7
    Senior Member Leben's Avatar
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    Thanks Sebastian, it's nice to have all of that information available in one post. You have been very helpful in sharing your knowledge.

  9. #8
    Senior Member TopPredator's Avatar
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    Mac. When you upgrade the motor to 250cc do you use the original OEM carb and if you do is it difficult to tune up? Does it idle well?
    If I’m ever on LIFE SUPPORT, UNPLUG ME. Then plug me back in... See if that works. Hidden Content

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    1994 Harley FXR

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  10. #9
    Senior Member macbig2k1's Avatar
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    The TW200 wasn't sold in Germany.
    Here are just some less imported bikes.

    So, I can't tell you how well the OEM carb works.
    I use at this time the Mikuni VM28-418 flatside carb.
    The carb is OK for lower rpm, but a bit to small for the higher rpm.

    It's not easy to tune the carb.
    The biggest help is a lambda meter, mine is from Koso.
    447ac7464d90a4c0fcd194bae71ab2f4_5.jpg

    I use it with a narrow band sensor, this is the low priced option.
    http://www.kosoeurope.com/a/f-ratio-mini-style-lambda

    The meter with wide band sensor is better, but a bit too expensive for me.
    http://www.kosoeurope.com/wide-band-...o-meter-lambda

  11. #10
    Senior Member TopPredator's Avatar
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    Quote Originally Posted by macbig2k1 View Post
    The TW200 wasn't sold in Germany.
    Here are just some less imported bikes.

    So, I can't tell you how well the OEM carb works.
    I use at this time the Mikuni VM28-418 flatside carb.
    The carb is OK for lower rpm, but a bit to small for the higher rpm.

    It's not easy to tune the carb.
    The biggest help is a lambda meter, mine is from Koso.
    447ac7464d90a4c0fcd194bae71ab2f4_5.jpg

    I use it with a narrow band sensor, this is the low priced option.
    http://www.kosoeurope.com/a/f-ratio-mini-style-lambda

    The meter with wide band sensor is better, but a bit too expensive for me.
    http://www.kosoeurope.com/wide-band-...o-meter-lambda
    Thanks Mac. I would hate to turn my reliable 200 into something I have to constantly dick with. Plus I'm not a motorcycle mechanic.
    If I’m ever on LIFE SUPPORT, UNPLUG ME. Then plug me back in... See if that works. Hidden Content

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    TW 1988 Black Widow.
    1994 Harley FXR

    Rick

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