compression questions

[Greg Lawrence]

warm and throttle open, i get 140, 135, 140.. cold i get like 135, 125, 135 or so... fresh rebuild, around 25 hours on the motor so far, ive been building compression as the rings seat but wondering if that middle one will ever come up?

 

[rickdb1boat]

Re: compression questions

It should come up a little or at least stay that close. Sometimes they are not perfectly even!

 

[snapperbait]

Re: compression questions

10-15 psi difference is acceptible...