Maintenance & Technical > KX500 Original

Porting

<< < (2/2)

Brett:
One place i think you should clean up which i can't remember being mentioned before is where the intake port goes down into the crankcase. There is 3 or 4 passages that are quite good all the way but when it exits the cylinder it has a harsh exit into the crankcases.  This needs to be radiuised between each port and also matched up to crankcase.  Spewin i didn't bother to take pics when i did mine as a picture would mak more sense.
Hughes we will probaby have motors apart at same time as over here i don't bother riding in summer as is so sandy and dusty. I will prob pull top end off in few weeks to see how badly the crappy wiseco has collapsed, seeing as i backflipped mine on weekend and broke subframe so may as well pull apart repair and clean ready for next dust free winter riding.

YUNGGUNNAZ:
also while apart  put new base gasket on the cylinder.you'll notice there is some overlap blocking transfer entrance. trim this back.while the motor is apart take one half of case and put the cylinder on .rub finger up and down where the two meet at transfers there is usually mismatch here.blend this in.oops letting too much out.

hughes:
Thanks Guy's thats some good info. I will take pictures of my work this winter. I still have about two months of riding left and then it's teardown time.

Navigation

[0] Message Index

[*] Previous page