icedeocampo
Well-Known Member
i have yamaha 115cc 4t engine with (variator transmition)
bore: 50mm
stroke: 57.9
compression ratio: 8.8:1
---
so installed a 59mm cylinder kit.
i get good power on low rpm but my rpm does not go up... i did some computation and my compression ratio is near 12:1, i DO NOT have pinging sound.
now here are my questions:
1. does the compression ratio limit my rpm?
or
is there any other thing that limits my setup from reving higher?
bore: 50mm
stroke: 57.9
compression ratio: 8.8:1
---
so installed a 59mm cylinder kit.
i get good power on low rpm but my rpm does not go up... i did some computation and my compression ratio is near 12:1, i DO NOT have pinging sound.
now here are my questions:
1. does the compression ratio limit my rpm?
or
is there any other thing that limits my setup from reving higher?