Carb swap?

[Desull]

Will the carbs from a 1977 70hp johnson fit a 1975 70 hp evinrude model 70573b? I am thinking about buying the 77 johnson for parts.

 

[Bosunsmate]

Re: Carb swap?

Check whether the carb to manifold gaskets are the same part #s

 

[emdsapmgr]

Re: Carb swap?

The innards of the carbs are slightly different, but they should swap out no problem. These are both fixed-jet carbs.

 

[Desull]

Re: Carb swap?

The innards of the carbs are slightly different, but they should swap out no problem. These are both fixed-jet carbs.

Thanks that is what I hoped would be the case. I noticed the slight difference in parts but didn't know if that would be a big problem. Hopefully I can get a couple more seasons out of my old rig before I am forced to get a newer one.

 

[boobie]

Re: Carb swap?

You'll probably get better performance out of the '77 carbs.

 

[emdsapmgr]

Re: Carb swap?

Better fuel economy for sure. The high speed jets in the 75 carbs are .061D, the high speed jets in the 77 are .054D.