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Discussion Starter · #1 ·
Hello Everyone,

Well i am toying with the idea of modding a 620 motor i have laying around. Its all out an ready to go.

Ive been looking into getting a 105mm piston(seems to be a problem here in the states) Well hell getting LC4 parts in general is a problem here.

a 105 Piston with the stock crank i would be looking at 658cc's Pretty much a short stroke 660.

Should be a nice kick if it all works out.
 

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cant remember properly, but, isnt the older black engine a bit troublsome (if it is a black engine ofcourse)..... cracking head and main bearings

would it be worth looking into 1st chap
 

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Discussion Starter · #3 ·
I never heard of the head problems, The bearing problem was few and far between. That has been changed out already though. I mean hell i have a 640 also that is in supermoto forum also. But i figure the 620 motor is out so might as well work off that platform.
 
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