Cool head won't seal. Suggestions?

[Jraz]

Well got the leak fixed. First shee build and did a 4mill. 110 rods. So I use the spacer plate. I loosened the cyls and torked the head, then torked the cyls. Passed a leak down. Got it broke in and jetting is super close. Having an issue with shifting though. Doesn't not like to shift under load, and won't go to 4th unless I back off throttle. It was a used tranny that was in good shape, forks looked good. Clutch started dragging a bit. There was a little grooving on the basket, I did file it down some. So any suggestion on a systematic approach to resolve the shifting. (budget minded)

[PassionRE]

Is it leaking into the cylinder, or out of the top of the head? Where exactly is the leak? If its getting into the cylinder, you can resurface it by running it over fine sand paper laid over a piece of marble or glass. If its leaking around the studs, just put some yamabond on the studs.

Unless you have a serious machined surface problem, try this.

1) clean everything up perfectly

2) ck all surfaces with a straight edge.

3) loosen all 8 base nuts and re-tighten hand tight only.

4) Install head with new orings, if you want to go anal, apply Permatex Ultra-Black to the orings(if the head is machined properly, you wont need the Permatex))

5) torque head evenly with a torque wrench.

6) re-tighten base nuts evenly.

 

This will make up for slight decking problems. The base gasket is alot more forgiving than the head shell is....Jim