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Post by Bashan on Jun 29, 2010 4:20:07 GMT -6
I ran into this while surfing for something else: 200cc UPGRADE KIT . I personally think that's asking a lot of the lower end. I notice it won't fit the "P' engine for some reason, that leaves me out. Rich |
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Post by zugzug on Jun 29, 2010 5:39:24 GMT -6
58.5mm not gonna get ya anywhere close to the 200cc either.
EDIT: it comes up to 155cc
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Post by Bashan on Jun 29, 2010 12:19:10 GMT -6
Liars.....can't trust most of 'em. Luckily we have an OCD math whiz in our ranks! Rich
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Post by runningslow on Jun 29, 2010 12:34:36 GMT -6
Yeah, that kit is most definitely not on the level. Its just a big bore kit with a 58.5mm cylinder (which, as zugzug said, is 155cc). There is no bolt on for a typical GY6 to make 200cc. That requires machining.
For comparison, my 168cc motor has a 61mm cylinder. If I did the math right, you'd have to have a 66.5mm cylinder to make 200cc with the standard crank. Alternatively, you lengthen the stroke, which will also require machining.
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Post by zugzug on Jun 29, 2010 19:52:01 GMT -6
Liars.....can't trust most of 'em. Luckily we have an OCD math whiz in our ranks! Rich No math wiz here. I have a bookmarked website that has a calculator on it. ;D |
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Post by runningslow on Jun 30, 2010 6:11:34 GMT -6
No math wiz here. I have a bookmarked website that has a calculator on it. ;D Wish I would have known that... I did it by hand (well, with the help of my trusty TI-89). But then, I'm an engineer and supposely like math.  |
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Clinician
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Post by sunrider on Jul 14, 2010 21:39:45 GMT -6
Hey Bashan, have you found any upgrade kits that DO work on the P engine? Or even just a performance head? I need a new one, have an EZ-out broke off in a broken exhaust stud, but I'm not having much luck finding one (that doesn't say "NOT for P157...")
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