What is a good compression for a KZ 1000?

I measured 110-120 psi across the board on all cylinders.

I know that the volume inside the hose of the vacuum gauge causes a bit of an error. I calculated the hose volume as 5cc, and applying some fuzzy math I calculate the resulting error of the compression measurement to be 15% because of the hose volume.

That would put my measurements in the 125-140 psi range, is that acceptable? Engine was cold, throttle closed. Thanks.

Standard is 128~156 psi; service limit 100 psi.

Some large four Kaw engines perform surprisingly well with less than 100 psi.

Good Fortune!

Thanks. So not that bad then!

throttle closed

throttle open and them numbers go up!

Will do and report back. Thx!

Tested again at WOT, now I am between 135 and 150, not bad at all!