Compression reading

Information relating to the Matchless G3 or AJS Model 16 350cc Heavyweight
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bob121
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Location: WEST MIDLANDS UK

Compression reading

Post by bob121 »

What is the expected psi reading on a cold compression test. It is a 1955 G3LS.
SPRIDDLER
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Re: Compression reading

Post by SPRIDDLER »

bob121 wrote:What is the expected psi reading on a cold compression test. It is a 1955 G3LS.
I may be wrong but I don't think many of us have comp testing equipment although I think I have read about 120p.s.i after about 3 or 4 kicks, throttle wide open. No doubt someone who has used the equipment will confirm.
On my G3LS the only 'test' I do (at ten and a half stone) is to be able to stand on the kickstart for a second or two.
'There is a tide in the affairs of men
Which taken at the flood............'
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Rob Harknett
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Re: Compression reading

Post by Rob Harknett »

I have had a 55 G3LS since 1956. I never been aware of having to have a compression test.
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