MercCruiser 7.4 MPI (big block Chevy)

[smhead]

Does anyone have the manufacturers specs for cyl compression for the subject engine? Thanks

 

[cooter2506]

Re: MercCruiser 7.4 MPI (big block Chevy)

Check out the Adults Only section and download you manual. All info is in there.

 

[Bondo]

Re: MercCruiser 7.4 MPI (big block Chevy)

MercCruiser 7.4 MPI (big block Chevy)

Does anyone have the manufacturers specs for cyl compression for the subject engine?

Ayuh,... The Big Question is,... What did You get,..??

About anything over 100psi,+ it'll Run....
Depending on the Build,... 120psi to 180 psi is concieveable...

 

[picklenjim]

Re: MercCruiser 7.4 MPI (big block Chevy)

Cylinder compression ratio is 8:1.Cylinder pressure probably around 150-160lbs..All cylinders should be within 10% of each other.

 

[smhead]

Re: MercCruiser 7.4 MPI (big block Chevy)

I'm shaking down a 1998 Eliminator Eagle XP this Wed and will perform a compression test on all cyl prior to purchase.