compression for my 30hp johnson OB

[30hpbob]

Each cylinder has 120psi. Is this good?

 

[Daviet]

Re: compression for my 30hp johnson OB

You didn't list the year, but 120 sounds good for any 30hp engine.

 

[30hpbob]

Re: compression for my 30hp johnson OB

It a 1956 30hp Johnson SeaHorse

 

[Daviet]

Re: compression for my 30hp johnson OB

Thats great compression for that year engine. Is it electric start? Are you sure your guage is correct?

 

[30hpbob]

Re: compression for my 30hp johnson OB

I just got guage from auto store and it is brand new. It does have electric start. I hooked up the guages and hit the start button, did that on both cycl. and thats what it read.

 

[Daviet]

Re: compression for my 30hp johnson OB

You will get higher numbers from an electric start, still good numbers.

 

[30hpbob]

Re: compression for my 30hp johnson OB

Thanks for the help Daviet. I guess the next step is to change the coils, condenser and points.