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Re: 1098cc motor compression

Posted: Tue Sep 27, 2011 1:41 pm
by Bazzalucas
Maybe in sunny South London, but here in the States it might not merit a second glance! :)

Re: 1098cc motor compression

Posted: Tue Sep 27, 2011 5:05 pm
by bmcecosse
Would fit right in - in Libya......

Re: 1098cc motor compression

Posted: Tue Sep 27, 2011 8:43 pm
by MarkyB
My thoughts exactly, where does the right to bear arms end? Nukes?

Re: 1098cc motor compression

Posted: Wed Sep 28, 2011 10:11 pm
by Bazzalucas
Hey! We're actually pretty fussy about nukes over here. We require a permit, background check and 90-day waiting period. Now back to our topic: is 150 psi acceptable compression on a 1275?

Re: 1098cc motor compression

Posted: Wed Sep 28, 2011 11:03 pm
by Fingolfin
:lol: :lol: :lol:

Re: 1098cc motor compression

Posted: Thu Sep 29, 2011 4:33 pm
by bmcecosse
No - not really - it's very much on the LOW side of acceptability.......

Re: 1098cc motor compression

Posted: Thu Sep 29, 2011 5:44 pm
by Bazzalucas
And that must be checked warm, throttle open, and all plugs out, correct?

Re: 1098cc motor compression

Posted: Thu Sep 29, 2011 7:28 pm
by bmcecosse
Absolutely......

Re: 1098cc motor compression

Posted: Thu Sep 29, 2011 8:56 pm
by Bazzalucas
I'm sure this has been answered elsewhere, but what would constitute an acceptable figure for a 1275? Thanks!

Re: 1098cc motor compression

Posted: Fri Sep 30, 2011 9:58 am
by mike.perry
1275 Mini Cooper S C/R 9.75/1
Compression Pressure 190 - 200psi at 500rpm
Mini Workshop Manual, General Data P.14

Re: 1098cc motor compression

Posted: Fri Sep 30, 2011 11:31 am
by Bazzalucas
Whoa...then mine is well shy of the mark! Thanks for that info. I have a Midget 1275...does that make much difference?

Re: 1098cc motor compression

Posted: Fri Sep 30, 2011 6:49 pm
by bmcecosse
The Spridget engine slightly less - but you should have 170/180.....

Re: 1098cc motor compression

Posted: Fri Sep 30, 2011 7:22 pm
by Bazzalucas
Ah, that's MUCH more attainable! :) Thanks, Roy.