How much cylinder pressure?

[Deesel]

How much cylinder pressure should an '80 1000G have. Mines got between 140 to 150 on all 4 cylinders. The motor is supposed to be stock with 32,000 miles.
That seems kinda high to me, is this normal?

[Big T]

That's acceptable. High would be over 165.
Have you adjusted the valves yet?
Tight valves would lower the readings

[Deesel]

ok thanks
No I personnally have not adjusted the valves yet- it a new "to me" engine.
bought for $150 on ebay and seems to run really well. The appearance of the engine is very nice for that many miles.
Just when I thought my 850 GLZ couldnt get any better, I bolted in a GS1000 engine.
It has the same beautifully smooth power delivery, but now it has MORE.

[Einar J Skog]

Hi

Standard cylinder pressure is 128~184 psi.
Service limit is 100 psi.

[Deesel]

Thanks Einar,
I have a Vance and Hines 4-1, K&Ns jetted.
I see you have slotted cams and good coils with a big bore. Are these necessary mods- worth the time and money? Will the drivetrain hold much extra horsepower? I just blew my splines (26000 miles)- hopefully a new set will last another 20000.
Any input is appreciated
ECR