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Suzuki 4x4 Club™ Dedicated to all Suzuki 4x4 Owners
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ferret375 *
Joined: 06 Sep 2009 Posts: 12 Location: yorkshire
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Posted: Fri Sep 25, 2009 20:12 Post subject: 1991 8v vitara engine compression |
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Hi
Just tested my engine compression but not sure about the result my compression tester is in psi and bar, however when I look at the manual it says compression ratio 8.9:1/11.7 bars
my results are no 1 = 173 psi, no 2 = 170 psi, no 3 = 175psi and no 4 = 175 psi
is this ok or is the old girl past its day checking cause i have just replaced head gasket.
Cheers Dan |
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Posted: Fri Sep 25, 2009 20:12 Post subject: Google Ads keep this community free to join! |
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zocko *******
Joined: 13 Sep 2009 Posts: 1438 Location: Southampton
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Posted: Sun Sep 27, 2009 9:08 Post subject: |
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11.7 bar is only 169 psi so it looks like you have pretty good compression based on your figures.
any reason why youre worried or is it just panicking after the h/g change? |
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ferret375 *
Joined: 06 Sep 2009 Posts: 12 Location: yorkshire
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Posted: Sun Sep 27, 2009 18:05 Post subject: |
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Hi
Yes as you said the bar ranges from 11.5 in one and other 3 are about 12 bar, prob just worried cause never done anything like head gasket before and cause i did not have the head skimmed. So when i looked up what the compression should be and noticed it was not in psi or bar in the book I had no idea if what i had was ok. After all its either done 137000 or 237000 miles.
But it seems to run fine, other than the revs pick up if i put lights, fan or rear heated window on
Dan |
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zocko *******
Joined: 13 Sep 2009 Posts: 1438 Location: Southampton
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Posted: Mon Sep 28, 2009 6:16 Post subject: |
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the rev pickup under load is normal, its designed to stop the engine from stalling when the load is put onto the alternator. |
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ferret375 *
Joined: 06 Sep 2009 Posts: 12 Location: yorkshire
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Posted: Mon Sep 28, 2009 18:37 Post subject: |
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HI
Yea some have said thats normal but it never did it before, goes from 1000rpm to 2000rpm when a load is put on.
Dan |
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Dav **
Joined: 27 May 2009 Posts: 53 Location: Scarborough
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Posted: Mon Sep 28, 2009 20:38 Post subject: |
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That is rather a lot |
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