300ex lacks bottom power?

[jvd182]

it seems for the last 6 months, bottom power has gone down. I had the whole engine rebuilt with port cam piston, and idk it seems like its only a top improvment. I have a lectron carb. When it goes up a hill it seems do just dog it up no power?
any ideals? Im thinking somthing about valves?

[tolson]

have you tried different front sprockes. i put a 12 tooth on front and it gave it more bottom

[jvd182]

Already geared, bump

[bwamos]

It may be due to the carb. If you have a carb that's too large of a bore, you will loose bottom end power.

If it had good bottom power.. and it's loosing power over time, then you need to do a leakdown test. Also make sure your cam is still in time.

[jvd182]

Nah im pretty sure its not the carb, because it did it with stock aswell.

[rollie]

maybe you smoked your clutch???? just an idea i smoked mine and it looses all its bottom end power, mine couldnt even wheelie

[bwamos]

Originally posted by jvd182
Nah im pretty sure its not the carb, because it did it with stock aswell.

Next, I'd check your cam timing.

[jvd182]

il try the cam timing, thanks

[ghak99]

When you did this motor work, did you put in a good timing chain?

[Aceman]

Originally posted by jvd182
I have a lectron carb. When it goes up a hill it seems do just dog it up no power?

Have you checked the float height?