Compression on a M7

[Mare]

I did a search but nothing came up on a CAT.

I would like to know what the compression should be on an 2005 M7. I did a check on mine today, cold motor and both sides are 108 PSI.

Can someone tell me what it SHOULD be, cause Im pretty sure 108 is not great. Im thinking it should be around 120-130.

Thanks in advance. :d

 

[slomo]

125 is the normal reading on the 3 i have had with stock heads and cold and they were fresh engines,but also try another guage to make sure its not a bad guage

 

[Mare]

125 is the normal reading on the 3 i have had with stock heads and cold and they were fresh engines,but also try another guage to make sure its not a bad guage

Ok, Thanks. I will see if I can borrow one from someone and check it again. My sled has stock motor with approx. 1200kms on it, or is the gauge in miles??? Either way, I will re check it. :d

 

[snopro59]

140 with Mac tools gauge is what all my 700's have been.

 

[Mare]

140 with Mac tools gauge is what all my 700's have been.

I will definately try a different gauge cause the one I have, I bought from Princess Auto, not the best quality. :d

 

[rigrat]

As long as both cylinders are within 10 % of each other you should be ok. Definitely try another compression tester but i would not worry too much.