Compression specs 1994 150hp

[danny9696]

Hi all I just picked up an astro runabout with a 1994 2.5L XR6 150hp, it had water in the lower unit and froze and broke, I put a new lower unit on her and checked the compression I had 90psi straight down the board, the boat has been sitting for years and I am waiting for my books to come was hoping someone could tell me if this was an ok compression or not?

Thank you

Danny

 

[JB]

Re: Compression specs 1994 150hp

I would call it okay because all cylinders fell in a small range, Danny. There is no "spec", and the reason is that there are too many variables.

Once you get her runnning warm her up and do another check, but don't panic if you don't get a bazillion psi.

 

[Faztbullet]

Re: Compression specs 1994 150hp

That model has a compression relief slot cut into sleeve and static(cranking)compression will be 90-100psi and compression will be increase as it runs.