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Old 18th December 2009, 11:05   #1
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Default How to convert my unicorn to 200cc

HI i want to know which piston has to be used for the above conversion like the zma with 65.5 or p200 with 67mm.
I find that the connecting rod pin of uni is just 14mm so how to fix the bigger pin
Should i have to shave the piston on the top, if so how many mm? bcos i tried with ambition piston which is 59 mm which makes it to 159cc but i shaved it too much i guess so the compression is very low.

Thanks for your replies...
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Old 26th January 2010, 23:35   #2
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Old 26th January 2010, 23:50   #3
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I am very poor with tech knowledge but even if you manage it, reliability(99% chances) will take a beating,
just upgrade to a 150cc+ motorcycle

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^^know you didn't want this reply but had to

on a more serious note, you want more performance right?
get a bigger(Karizma/P-220/RTR180)/better(R15) motorcycle.

Last edited by Sheel : 26th January 2010 at 23:51.
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Old 27th January 2010, 10:21   #4
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i think Joel can help you out !!
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Old 27th January 2010, 10:48   #5
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Quote:
Originally Posted by sreerama View Post
HI i want to know which piston has to be used for the above conversion like the zma with 65.5 or p200 with 67mm.
I find that the connecting rod pin of uni is just 14mm so how to fix the bigger pin
Should i have to shave the piston on the top, if so how many mm? bcos i tried with ambition piston which is 59 mm which makes it to 159cc but i shaved it too much i guess so the compression is very low.

Thanks for your replies...
You should max out at 165cc, 200cc is over kill.
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