I finally did my first top end.
The compression before the top end was 167psi.
After breaking in the top end and riding it under 1/2 throttle for about 20 minutes I get a reading of 180psi.
What range should a stock 125 be?
Bike is a 2001 KX125.
Also, after a rebuild when is the best time to do a compression test? Does it matter if I do one at 20 minutes or will the top end need to be broken in further to get a more accurate reading.
This has been buggin me for a couple days now.
I thought that this bike had a modified head or cylinder (higher compression) but the guy who sold me the bike said he ran pump gas. I do know that the bike was ported, and the company that did it has machined there name into the side
I talked to the company that ported it and they could not tell me anything about the motor, they just knew that they ported it.
The compression before the top end was 167psi.
After breaking in the top end and riding it under 1/2 throttle for about 20 minutes I get a reading of 180psi.
What range should a stock 125 be?
Bike is a 2001 KX125.
Also, after a rebuild when is the best time to do a compression test? Does it matter if I do one at 20 minutes or will the top end need to be broken in further to get a more accurate reading.
This has been buggin me for a couple days now.
I thought that this bike had a modified head or cylinder (higher compression) but the guy who sold me the bike said he ran pump gas. I do know that the bike was ported, and the company that did it has machined there name into the side
I talked to the company that ported it and they could not tell me anything about the motor, they just knew that they ported it.