1988 B3 Compression Specs?

[samplejs]

Anyone that can give me the 1988 B3 Compression Specs? I.E. compression ratio, standard PSI and lowest PSI. Thanks for the help.

[darkdan]

It's more important that the cylinders pressures are close to eachother.

[FB71]

what Dan said ^^^

ratio is not important when checking performance, but its about 9:1

and usually good cylinders will indicate roughly 125-200psi with throttle blocked open, cranked for 5 compression strokes each cylinder, all spark plugs removed, warm engine. Make sure fuel delivery is disabled as well.

They should be within 10% of each other (about 15psi)

[samplejs]

Is there any way to test the compression if I can get it running to warm it up first?

[FB71]

you can check it cold, but your numbers will be slightly lower.

[wtfman2]

And if you have a low cylinder put a little bit of oil in the cylinders and if it gets better it is more likely a ring seal problem and if it don't it is either really bad rings or more likely valve/seat deterioration.


Clinton