engine noise need help

[twizted269]

i just rebuilt my engine with .40 over and an new wiseco crank. everything installed right to the t but get a knocking noise when running. noise isnt really noticeable unless sitting at idle. sounds like in the jugs but cant tell for sure. is it normal to hear engine noise or tranny noise over the engine? i have a buddy with the same setup and sounds close and another buddy at stock but not near as loud. after the secong engine overhaul in 2 months i dont need an more problems. any ideas would be nice.

[FireHead]

i just rebuilt my engine with .40 over and an new wiseco crank. everything installed right to the t but get a knocking noise when running. noise isnt really noticeable unless sitting at idle. sounds like in the jugs but cant tell for sure. is it normal to hear engine noise or tranny noise over the engine? i have a buddy with the same setup and sounds close and another buddy at stock but not near as loud. after the secong engine overhaul in 2 months i dont need an more problems. any ideas would be nice.

You probably need to measure youre squish band to see if you are maybe way out of tolerance and have the piston hitting the head.

[okbeast]

I can hear tranny noise on mine, or something that sounds like it, along with bolts rattlnig loose, kicking rattling, exhaust tinging, I just ride the damn thing

[ItzaBansheeBitch]

Sounds like shirt slap. Have you checked the rig gap clearance? have your jugs checked, who ever did your work might have gotten a little out of spec.

[g-force]

I've had that noise for years, before and after rebuilds and have seen several posts on this subject. I can't figure out what the noise is, I just don't worry about it anymore.

[ItzaBansheeBitch]

*Skirt slap

[banshee(911)]

*Skirt slap

was wondering if you changed the bearings in tranny or on clutch

[papa_smurf49319]

mine has a little something to it also, but nothin to worry about and its not crazy loud, only noticeable if your listening for it!

[twizted269]

i know its not skirt slap or anything to do with tolerences with the jugs or crank. i mic'd everything and its within specs. crank is brand new. locoal shop just said its normal for these machines to make some noise when everything is that tight. still sounds weird though.

[papa_smurf49319]

just ride the damn thing, i know your worried because its a new motor, trust me ive been there. But just go have fun on it!!!!!!!!!

[hillshooter421]

I have had a noise in mine for a while now, the noise in my motor is the kick start gear. I can only hear it when im at idle. check it out, the gear is just held on by a clip and if its worn out it rattles.