Help Me Please!

[xx3003xrdrxx]

ok i just rebuilt my motor and bored it out to a true 300ex, it is running hott and it sorta makes a knocking noise like . Its running really strong and all but it just seems like the engine is heating up to much . Any suggestions ? i was thinking like an oil cooler or like a one step cooler spark plug , idk what do you all think . O btw , it has a stage 2 webcam , port/polish,wiseco .80 over piston and heavy duty valve springs , hardened rockers , and yosh full system , filter , and 22 inch tires . PLEASE HELP !

[jak1389]

try a higher gas octane. what are you runnign now?

[HondaEXrider22]

Yea thats what i was gonna say. What octane are you using?

[400exrider26]

what compresion piston are you running?

[Dupontster]

Check your jets. My 416 was running to lean and it over heated and tore up my sleeve and piston.

[jak1389]

Originally posted by Dupontster
Check your jets. My 416 was running to lean and it over heated and tore up my sleeve and piston.


how long did u run it too lean?

[xx3003xrdrxx]

im running 94 octane , its 11to1 comp. , and the main jet is a 130 and the other is stock

[jak1389]

then it shouldnt be knocking. well while you were in the motor did you change the cam chain or is it still the original?

[RiderTRX400ex]

have u broken it in yet?

[xx3003xrdrxx]

no not yet ... lol im still on my first tank of gas ? should i change the jetting to like a 135??????????

[RiderTRX400ex]

it wouldnt hurt to go up, and u gutta run it some more to get your rings to seat

your too lean try a 135 and a 140

[2004exrider]

yeah, sounds like your runnin on the lean side buddy. check the spark plug that will tell you everything.
good luck, keep us informed when you figure out.

Jimmy