B18C7 compression standard

[Neesmo31]

Hey all what is an acceptable compression for a B18C7 motor? I know brand spanners is 270 psi according to the manual.

If people have done a test before what they have been reading for a 2nd hand motor and also what is good compression.

Thanks.

[IEVAQ8]

mine was a consistent 235psi and thats with 160,xxxkms on the clock and after it was boosted...

[Neesmo31]

Excellent. Thanks.

[bennjamin]

Anywhere from 220 to 250 psi is the norm just make sure engine is warm and there is less than 10% descrepency between the cylinders

[Neesmo31]

Thanks guys.