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Compression what should it be

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Offline partie4evr

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Compression what should it be
« on: February 04, 2010, 01:10:50 PM »
ok so im looking into buying a samurai and i was tring to find out what the compression should be at lbs i have a tester i just dont want to buy a engine that needs a rebuild thanks for your time and have a great day . oh and if you know any years to avoid or stuff like that would be great thanks and have a good day one more thing it has the stock 1.3 in it
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Offline sammypro.com

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Re: Compression what should it be
« Reply #1 on: February 04, 2010, 04:43:14 PM »
150+ across all 4 would be good. Make sure they are all the same or close to the same #
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Offline samwisper

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Re: Compression what should it be
« Reply #2 on: February 04, 2010, 10:08:22 PM »
Just make sure the cyls are no more than a 10psi difference listen for any rattles or odd nosies .Look for any kind of smoke oil leaks .That way you can make an offer on it trying to lower the price a little.Good luck!
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Online fordem

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Re: Compression what should it be
« Reply #3 on: February 05, 2010, 01:21:11 PM »
I believe 150 psi would be considered the minimum acceptable - however - I know from experience that the G13B will run surprisingly well with much lower numbers, in fact less than 100 psi
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Bobthebiker

Re: Compression what should it be
« Reply #4 on: February 05, 2010, 02:46:58 PM »
while most engines may run on around 100 pounds,  that would be a suggestion that you have a tired motor.  ideally 150-190ish is where I'd say you need to be.
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Online fordem

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Re: Compression what should it be
« Reply #5 on: February 05, 2010, 05:10:02 PM »
Quote from: Bobthebiker on February 05, 2010, 02:46:58 PM
while most engines may run on around 100 pounds,  that would be a suggestion that you have a tired motor.  ideally 150-190ish is where I'd say you need to be.

Oh definitely, and closer to 190 also - mine is down around 90 right now, and I've started accumulating the pieces I need to pull it and do the rebuild - gasket sets, seals, etc., area already here.
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'98 SQ420 Grand Vitara
'05 JB420 Grand Vitara
'16 APK416 Vitara
'21 A6G415 Jimny
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