Offshoreonly.com - Mercruiser 502 Mag MPI Compression

Offshoreonly.com (https://www.offshoreonly.com/forums/)

- General Q & A (https://www.offshoreonly.com/forums/general-q-20/)

- - Mercruiser 502 Mag MPI Compression (https://www.offshoreonly.com/forums/general-q/133183-mercruiser-502-mag-mpi-compression.html)

mars	06-19-2006 05:45 PM

Mercruiser 502 Mag MPI Compression

What is the normal compression on a stock 502
Thank you

Kanookstr

06-19-2006 07:20 PM

Re: Mercruiser 502 Mag MPI Compression

Quote:

Originally Posted by mars

What is the normal compression on a stock 502
Thank you

8.75:1

mars	06-19-2006 08:02 PM

Re: Mercruiser 502 Mag MPI Compression

Quote:

Originally Posted by Kanookstr

8.75:1

Maybe my question was not understood, I was meaning Pounds/square inches and not the ratio

Griff

06-19-2006 08:51 PM

Re: Mercruiser 502 Mag MPI Compression

around 140#

mopower

06-19-2006 09:15 PM

Re: Mercruiser 502 Mag MPI Compression

Three compression stokes(plugs out and carb open) should get you 140/150

All times are GMT -5. The time now is 11:20 PM.