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compression value
https://www.ausmini.com/forums/viewtopic.php?f=2&t=14898
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Author:  mini_me [ Thu Jan 12, 2006 5:02 pm ]
Post subject:  compression value

Does anyone know the compression value of a 998 engine.
I'm getting 71 psi on the first stroke and a final reading of 138 psi on all the cylinders.
thanks Felix

Author:  JAM_IT [ Thu Jan 12, 2006 6:46 pm ]
Post subject: 

That's a bit low.....

JAM was getting 165 prior to recent rebuild.

My $100 special 77 Clubby is getting 155 and runs well enough.

Author:  mickmini [ Thu Jan 12, 2006 7:03 pm ]
Post subject: 

but at least it is worn out evenly

Author:  Morris 1100 [ Thu Jan 12, 2006 8:01 pm ]
Post subject: 

My 1100 is getting 125 on all four. I know it is low but at least it is constant (and has been for seven years)

Author:  mini_me [ Fri Jan 13, 2006 5:17 am ]
Post subject: 

Do you guys recommend I get the head reco and check the pistons
or just leave it as is.
Felix

Author:  mini_me [ Fri Jan 13, 2006 6:20 am ]
Post subject: 

the compression values i obtained were taken with the engine cold as there is no manifold on the engine.would a cold engine cause the low values

Author:  JAM_IT [ Fri Jan 13, 2006 7:37 am ]
Post subject: 

Yes, I believe you are supposed to do it WARM.

Author:  mini_me [ Fri Jan 13, 2006 9:07 am ]
Post subject: 

thanks all,
i will do the compression check again once i change the side cover gaskets and exhaust/inlet manifold gaskets.
next job on the 76 clubman S is welding a patch on the drivers side kick panel and getting seats re upholstered.
Felix

Author:  JAM_IT [ Fri Jan 13, 2006 9:21 am ]
Post subject: 

mini_me wrote:
and getting seats re upholstered.
Felix


Go see my trimmer. Might be a bit of a hike for you...but he does have all the original clubby cloth (no more black though :P )

Author:  mini_me [ Fri Jan 13, 2006 1:51 pm ]
Post subject: 

Hi Anton,
can you give me the details of your trimmer.
I only need the front seats redone in the original bone coloured material
thanks Felix

Author:  JAM_IT [ Fri Jan 13, 2006 2:12 pm ]
Post subject: 

done :wink:

Author:  AJ [ Fri Jan 13, 2006 7:22 pm ]
Post subject: 

mini_me wrote:
the compression values i obtained were taken with the engine cold as there is no manifold on the engine.would a cold engine cause the low values


A cold engine will give higher values ...so when hot it will be significantly lower l

Author:  tainted [ Fri Jan 13, 2006 9:31 pm ]
Post subject: 

A relativly chick check is to put a small bit of machine oil down the plug hole and do a wet test, if compression improves, shows a very worn engine.

Author:  hutto [ Fri Jan 13, 2006 9:37 pm ]
Post subject: 

i have high compression on mine 210 psi :P

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