I have a 89 zilla that just had the engine rebuilt bottom to top, the po did a top end rebuild and didn't put the wrist pin thrust washers in and we blew the skirt off the piston and wedged the crank with part of the skirt, the engine is together and running and is almost done with break in. The problem I'm having is all through the rpm range the bike is breaking up and not running out smooth then in 4th and 5th gear will clear up and run out somewhat well on top end, all the while running very rich on stock jets and carb
Engine is stock bored 0.40 over
New Fmf fatty with turbine core 1
Uni filter air box intact with cover
What I think are stock fiberglass reeds
Stock mikuni 22.5/350 jetting
Running klotz r50 with non eth. 90oct. At 32:1 I did try straight 110 as well at 32:1
Ran a heat range 8 plug and fouled it, tried a 7 and that one is holding up but very black
I think it might be time for a new carb but I'm a new to the zillas and tuning 2t, any input and opinions would be great I just wanna ride the damn thing after all money and time invested