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Post by superjew78 on Oct 1, 2017 15:55:42 GMT -5
the manual says 15.0 kg f/c m but what would that register on a compression test In pounds? i have a 250cc CF moto v5 I think i might need top end rebuild. Only a single cylinder so i cant test the others  |
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Post by maxtera on Oct 1, 2017 16:51:04 GMT -5
I had to replace the engine in my 04 Reflex recently. The old engine had compression of 130psi & it couldn't move my 290lbs over the curb, I later found out that the compression should have been in the 228-230psi range. Which is what I have now with my replacement engine.
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Post by superjew78 on Oct 1, 2017 17:12:19 GMT -5
I had to replace the engine in my 04 Reflex recently. The old engine had compression of 130psi & it couldn't move my 290lbs over the curb, I later found out that the compression should have been in the 228-230psi range. Which is what I have now with my replacement engine. ok thanks. |
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Post by akais on Oct 2, 2017 7:45:00 GMT -5
the manual says 15.0 kg f/c m but what would that register on a compression test In pounds? i have a 250cc CF moto v5 I think i might need top end rebuild. Only a single cylinder so i cant test the others 15kg force/cm2 is equal to 213.35 PSI. If you check it, to be accurate, you may have to remove the carburetor and exhaust. That reading is probably not with the them attached. |
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Post by chewbaca on Oct 2, 2017 7:58:08 GMT -5
Compression is tested at cranking RPM
At such a low speed the carb and exhaust may as well not be there
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Post by superjew78 on Oct 2, 2017 14:28:15 GMT -5
got it thanks guys
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