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Compression reading
Posted: Sat May 23, 2020 6:36 pm
by Philly Eddie
What is a healthy ballpark range of psi for cylinder compression on a stock 450 (spring head)? I cannot find this info in any manual. Thanks.
Re: Compression reading
Posted: Sat May 23, 2020 11:13 pm
by Jordan
This data is not usually stated for a single cylinder engine, because it isn't very useful I think.
With a multi cylinder engine, comparative readings between cylinders can be meaningful.
Re: Compression reading
Posted: Sun May 24, 2020 10:11 am
by Duccout
In the good old days, good compression was determined by being able to stand on the kickstarter for a few seconds.
Re: Compression reading
Posted: Sun May 24, 2020 3:57 pm
by Bevel bob
I know my compression is good.Attempt a bump start in first or 2nd and the back wheel locks up and you stop .
Re: Compression reading
Posted: Mon May 25, 2020 11:03 am
by Ventodue
Duccout wrote:In the good old days, good compression was determined by being able to stand on the kickstarter for a few seconds.
Doesn't seem to have much effect with my Vento, Colin. Just me left standing on one leg, 18" or so off the ground ...
Re: Compression reading
Posted: Mon May 25, 2020 11:11 am
by Duccout
Craig, that reminds me of my mate's Norton Commando, which would leave you suspended in air; a bike for Real Men!