Cylinder compression

Hello all
Just purchased a 74 850 from the USA which to my amazement started with fresh fuel battery etc
Had been stored for 25yrs + but turned over on the kick start ok

I intend to do a full refurb but to get an idea od the engine health I want to test the compressions

Does anyone know what pressure in psi or bar I should expect?

Cheers
NigeB

I would say 125-150 psi on a stock 850 - it is more important that both cylinders are within roughly 10 psi of each other. Check it warm and hold it at wot while spinning the engine over

74 Mk2 here - last time i checked compression - 145 (L) and 150 (R).