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19-08-2006, 07:40 AM
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Regular Member
Join Date: Apr 2005
Location: Croydon, Melbourne
Posts: 140
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I'm am going to be getting a compression test done on my car as it is using a bit of oil.
Its an AU2 XR6 VCT Does anybody know what numbers i should be looking for? Hopefully its ok.
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19-08-2006, 08:55 AM
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FF.Com.Au Hardcore
Join Date: May 2006
Location: Perth, South
Posts: 3,064
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if you have a service book, like gregory's, etc then it should tell you in that. there are a lot of things that can affect the result, like how many km the car has done, how often it has been serviced, etc
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19-08-2006, 10:20 AM
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#3 | ||
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Regular Member
Join Date: Apr 2005
Location: Croydon, Melbourne
Posts: 140
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Don't have a Gregory's, but was hoping someone might have.
The car has done 135K and has been serviced regularly but has had a trailer on it almost all of the time so it has worked.
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19-08-2006, 10:43 AM
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SCALDED CAT
Join Date: Aug 2006
Location: FERNVALE QLD
Posts: 130
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Hi Mate.... the numbers you should be looking for are....
100-650 kPa ( all cylinders need to be within 100 kPa of each other ) (must crank engine over several times before you achieve the correct numbers) If compression is low...pour a table spoon of oil into the sparkplug holes....if compression improve vastly....then it is your rings....if it doesnt improve with oil your looking at a broken ring or valves ethier burnt or valve seats....if two cylinders are just the problem it could indicate a simple head gasket problem. Anyway hope this helps you out....and good luck!!!  :
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19-08-2006, 04:33 PM
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#5 | ||
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FF.Com.Au Hardcore
Join Date: May 2006
Location: Perth, South
Posts: 3,064
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the other thing that can cause oil usage without affecting compression is valve stem seals...of course if it is only these they are a lot easier to replace than rings or a head gasket
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19-08-2006, 04:33 PM
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#6 | ||
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Regular Member
Join Date: Apr 2005
Location: Croydon, Melbourne
Posts: 140
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Cheers lads hoping on good results. Fingers crossed...
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20-08-2006, 02:03 PM
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#7 | |||
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FF.Com.Au Hardcore
Join Date: Sep 2005
Location: Perth, Western Australia
Posts: 570
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Quote:
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01 AUII XLS Regency Red Ute 4.0L Egas Auto Mods -transcooler, tickford intake, K&N pod filter, Pacemakers, 2.5 inch exhaust, Crow Cam, 1981 XD Fairmont 351 - 351 Cleveland, ARP bolts, flat top pistons, Stage 3 Dynotec cam, ported 2V heads with 4V valves, Roller Rockers, Weiand manifold, Mighty Demon, 1/2" fuel lines with blue Holley fuel pump, Crane hi-6 ignition, B&M megashifter, C4, hi-stall, shift kit, 3.77 Ford 9" LSD. Thanks to: EvilChief and SJW Performance |
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compression test time
Linear Mode
