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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 ![]() |
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 ![]() |
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 ![]() |
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