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Compression of 525 EFI's

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Compression of 525 EFI's

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Old 02-23-2011, 11:13 AM
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Default Compression of 525 EFI's
What should the compression be on an Merc 525 EFI in pounds??

Thanks in advance.
Last edited by verbi69; 02-23-2011 at 02:14 PM.
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Old 02-23-2011, 01:27 PM
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stock 8.75:1
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Old 02-23-2011, 01:51 PM
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Compression in ft/lbs? don't you guys use the metric system up there?
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Old 02-23-2011, 02:13 PM
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Originally Posted by RT930turbo
Compression in ft/lbs? don't you guys use the metric system up there?
Lol... yes we do!
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Old 02-23-2011, 02:13 PM
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Originally Posted by campionchase910
stock 8.75:1
That one I knew, but what is it in pounds??
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Old 02-23-2011, 02:16 PM
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Originally Posted by RT930turbo
Compression in ft/lbs? don't you guys use the metric system up there?
After re-reading the post it looks like I'm looking for torque with the ft/lbs......

I got the info I was looking for...it's 140 lbs.

Thanks !!
Last edited by verbi69; 02-23-2011 at 10:00 PM. Reason: spelling
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Old 02-23-2011, 09:16 PM
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Originally Posted by verbi69
What should the compression be on an Merc 525 EFI in pounds??

Thanks in advance.

Wait. Did you buy a boat with 525's or 500 EFI's?
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Old 02-23-2011, 09:49 PM
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You asked for Compression, but the answer you got was compression ratio
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Old 02-23-2011, 09:55 PM
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Originally Posted by VAspeed3
You asked for Compression, but the answer you got was compression ratio
Yup...... the compression pounds was what I was looking for.
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Old 02-23-2011, 09:57 PM
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Originally Posted by Keith Atlanta
Wait. Did you buy a boat with 525's or 500 EFI's?
Keith, closing the deal on a 525 boat...and not a 342!!
Compression and leak down was excellent, scan of engines was excellent, deposit accepted and contract signed.
Can't wait for spring!!
Last edited by verbi69; 02-23-2011 at 09:59 PM.
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