Author Topic: Compression test  (Read 125 times)

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ROYC

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Compression test
« on: 25 June, 2019, 12:03:49 »
On a 1959 A7ss engine in good condition, what should the gauge read in PSI ?
My bike is a 1958 A7SS

chaz

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Re: Compression test
« Reply #1 on: 25 June, 2019, 17:41:20 »
I would hope 120 psi or higher.
Im working on a 1980's 4 cyl Kawasaki 650 best I can get is 110 lowest is 70. which cylinder isnt firing?? the 70psi one.
the A50 chop Ive not started rebuilding yet (just come in from the States) has around 100 on both pots.
in fairly new recently rebuilt and run in condition would be good around 150psi

ROYC

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Re: Compression test
« Reply #2 on: 25 June, 2019, 18:35:57 »
I would hope 120 psi or higher.
Im working on a 1980's 4 cyl Kawasaki 650 best I can get is 110 lowest is 70. which cylinder isnt firing?? the 70psi one.
the A50 chop Ive not started rebuilding yet (just come in from the States) has around 100 on both pots.
in fairly new recently rebuilt and run in condition would be good around 150psi

Thanks for that Chaz.
My test kit should be here Thursday, I hope it's a good reading.
My bike is a 1958 A7SS