compression test

  • 1975kz400
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compression test

02 May 2006 05:08
#44389
does anyone know what the compression is supose to be at on a 81 kz550? or a round about to run?

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  • wiredgeorge
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Re: compression test

02 May 2006 05:59
#44404
The smaller engines typcially have a bit higher compression than larger engines with lower compression ratios. I suspect about 150 lbs/in per cylinder with no more than 10 lbs/in difference between cylinders. Hopefully a 550 owner with a manual will chime in. Check compression with the engine warm, throttle held open and all plugs removed.
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  • Vter Bob
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Re: compression test

02 May 2006 06:38
#44415
Usable range is between 155 to 235 psi or less than 14 psi difference between any two cylinders.
Georgia, Vermont

1981 KZ550 LTD
1982 KZ1000 LTD
1999 ZG1000 Concours

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