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Post by dmartin95 on Mar 27, 2015 20:05:57 GMT -5
how many mm can the stroke be extended on a stock GY6 150cc, without having to add spacers/risers?
If I recall it's either 2, or 2.5mm....
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Post by ramblinman on Mar 27, 2015 23:03:31 GMT -5
how many mm can the stroke be extended on a stock GY6 150cc, without having to add spacers/risers? If I recall there's either 2, or 2.5mm.... thought you need spacer for all... or perhaps just extra gaskets.  i've read 3mm stroker is the most you can go without installing a larger chain. here is a good thread that might help you. itistheride.boards.net/thread/5207/stroker-crank-project?page=1 |
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Post by dmartin95 on Mar 28, 2015 12:52:57 GMT -5
how many mm can the stroke be extended on a stock GY6 150cc, without having to add spacers/risers? If I recall there's either 2, or 2.5mm.... thought you need spacer for all... or perhaps just extra gaskets. You don''t need a riser/spacer/extra gaskets for some stroker kits. Alleyoop has a 60mm crank (which is +2.2mm) and he doesn't have any spacers. Take a look at the picture i'm including. The space called the "clearance volume", that's the space I'm talking about. A stock GY6 150cc I'm pretty sure has a clearance volume of 2.5mm... When you you fill that gap, that when you create what's called a "high compression" engine and it's when you're best served with a forged piston.  |
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