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saph 4x4 compression pressures

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Old Mar 30, 2006 | 03:29 PM
  #1  
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Default saph 4x4 compression pressures

Right done a compression test on me saph 4x4 cos today, STD engine internals running stage 3. Got the following results:
Cyl 1 11bar
Cyl 2 11bar
Cyl 3 11bar
Cyl 4 10bar

Should i be worried about pot 4 losing 1bar, got a gut instinct its the headgasket, intermittent missfire after first starting, just reconned the rad as end caps leaking. Also @ 11bar must be STD compression right?

Cheers Bri.

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Old Mar 30, 2006 | 05:34 PM
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i had a similar post bri ,and Karl from NMS said around 9-10 bar is normal mate on mine cant imagine yours being any diferent.
Pot 4 syndrom ,only a matter of time mate
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Old Mar 30, 2006 | 07:49 PM
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I guess H/Gasket failure is common on pot 4, or is it something more scinister?
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Old Mar 30, 2006 | 08:06 PM
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get a new gasket in as a spare
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Old Mar 30, 2006 | 08:12 PM
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well guess 28psi aint going to do it any favours
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Old Mar 30, 2006 | 08:40 PM
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did you do the compression test when the engine was warm ?
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Old Mar 30, 2006 | 08:53 PM
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cold
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Old Mar 30, 2006 | 09:08 PM
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My headgasket went last week

Took it apart today and it had gone on Number 4 on the exhaust side.

Steve.
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Old Apr 4, 2006 | 10:38 PM
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mine just gone tonight ,but i have one in the garage spare
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Old Apr 5, 2006 | 01:51 PM
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un lucky mate, you can do mine why your at it
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Old Apr 5, 2006 | 07:12 PM
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As if i would actualy attempt such a thing
Tell you what though Bri was she flying .HOLLY fuck she was
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Old Apr 5, 2006 | 07:19 PM
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She went out in a blaze of glory then
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