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Old 08-25-2008, 08:06 AM   #1 (permalink)
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YX 150 to YX 160 Help please

I can't find the specs for bore and stroke so..

I have a YX150 with a blown top end (smokes like a diesel)

Will the YX 160 top end turn my 150 to a 160 or is it purely in the crank that is the difference?

I guess the question is what is the bore and stroke on the 2 motors?

thanks
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Old 08-25-2008, 08:13 AM   #2 (permalink)
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Re: YX 150 to YX 160 Help please

its in the crank
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Old 08-25-2008, 08:16 AM   #3 (permalink)
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Re: YX 150 to YX 160 Help please

so then i am gonna need the crank also to get the 160?
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Old 08-25-2008, 08:29 AM   #4 (permalink)
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Re: YX 150 to YX 160 Help please

Stroke x Bore = Displacement
57 x 60 = 160
53 x 60 = 150
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Old 08-25-2008, 08:29 AM   #5 (permalink)
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Re: YX 150 to YX 160 Help please

The 160 is a stroked 150 crank , the top end is the same.
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Old 08-25-2008, 08:33 AM   #6 (permalink)
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Re: YX 150 to YX 160 Help please

that is what i figured... looks like i will be stealing the crank too..
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Old 08-25-2008, 08:34 AM   #7 (permalink)
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Re: YX 150 to YX 160 Help please

thanks for the info guys.
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