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Old 07-02-2010, 09:49 PM   #1
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Smile compression readings ?

hi what sort of compression figure should i have from my 89 erst 1600cvh ? a figure for a bad engine compared to say a good rebuilt one thanks.
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Old 08-02-2010, 06:11 AM   #2
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Equal! That is of primary importance. The value is secondary and can easily be affected by settings, such as cam timing.
On a standard engine, I'd say that the compression reading in bars should be higher than the compression ratio. On wild cams these tend to be on the same level.
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Old 08-02-2010, 07:21 AM   #3
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i good one should be 150 psi in each cylinder
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Old 08-02-2010, 08:05 PM   #4
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the reason i ask is just done a egine rebuild on my rs. new rings, re seat valves and head skim, big and main bearings full gasket set ect.. it also has got a kent cam cvh 35 and all running great and checked the compression and i have 8.5 bar (125psi) on all clinders does this sound a little low ?? .................... regards ryan
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Old 09-02-2010, 06:07 AM   #5
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You will not get much higher on a CVH35. All is ok.
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Old 09-02-2010, 07:24 AM   #6
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seems a little low to me
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Old 09-02-2010, 10:13 AM   #7
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If it's a very new engine give it some time to bed the rings in properly, don't worry about the comp, just as said so long as nice and even.
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Old 09-02-2010, 10:13 AM
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