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Old 04-05-2012, 05:59 AM   post #1 of 6
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Default onan b48g compression

what should the compression readings be on b48g? thanks

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Old 04-05-2012, 06:04 AM   post #2 of 6
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Default Re: onan b48g compression

Minimum compression is shown at 100 psi! And no more than 10 psi difference between cylinders.

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Old 04-05-2012, 09:06 AM   post #3 of 6
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Default Re: onan b48g compression

thanks, i appreciate the info
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Old 04-05-2012, 11:55 AM   post #4 of 6
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Default Re: onan b48g compression

My notes say 85-115.
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Old 04-05-2012, 03:02 PM   post #5 of 6
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Default Re: onan b48g compression

most Onans run in the 100-110 range. My B48M (18hp version of yours) was 95 and 100
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Old 04-05-2012, 03:14 PM   post #6 of 6
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Default Re: onan b48g compression

I pulled the info from the JD CTM not the Onan tech manual. Sometimes there can be differences between what is stated in those manuals.
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