760 & 1200 sleeves, port timing

[deblaster]

I know the 760 & 1200 Yamaha sleeves are both 84mm, but are ports different? I have heard the 1200 sleeves have better bottom end.

 

[#ZERO]

Whatcha makin' Scott? :biggrin:

I have a few un-ported 760 cylinders if you want to take some measurements.

If you can find someone with a non-PV 1200 cylinder we'll have the answer.

 

[deblaster]

Thanks good idea.