just done a comp test


no1-140
no2-140
no3-140
no4-135

does this sound right (std comp)

 

I'm no engine expert, but that doesn't sound like much variation to me - whenever I've done comp tests it's been

140 140 140 0

Your results sound fine to me! I wish I had that much compression that's for sure.

Si

 

Yup. You are looking for even (ish) numbers on all 4.

You CAN'T tell if it's high/standard/low comp from a compression test.

 

LOL @ SiB

 

[quote

You CAN'T tell if it's high/standard/low comp from a compression test.[/quote]



it is std comp.
@ si
must get it ready for combe this year

 

sounds good to me
i did mine the other week and they were all around the 140 mark

 

As long as thats warm, with the throttle wide open its fine. Try it again with before and after a squirt of oil down the bores, if it goes up a lot all the rings are evenly knackered

 

oops repost

 

well its done 8 track days, and thought of freshening it up
don,t know now



that was warm not running temp

 

mine was 95 90 95 85 (or simlar) i think its whot you may cool a bit worn aslong as there with in 10% of each other its fine i was told

Comerdy Dan may rember me taking my cossie to jamies it turned out my miss fire was due to the cam belt being a tooth out and shit compression that was 2yrs ago only just removing it now (and it still runs just not great

 

Alan those figures are too low for any Cossie to be healthy and I'LL bet you the reason is that the valves have clipped the pistons and AREN'T fully seated in the head(you'll be able to see where the carbon's blown by) once you've taken the head off!

all the best to you and family for the new year

 

Alvyn yer some thing not right
The other thing is when it was done by a m8 it showed 110 ish with plugs in but i was also there when Jamie and dan ect did it and it was lower alot lower
still run and got abused for the 6 months i had it on the road and 18months later i have nearly got the new engine in

I'll be looking into whots up with myh old one when its out