What year?

[smut]

I have what i thought was a 60 rude but i know think is a 50,the model# is 503778r.im wondering if on this engine is it possible to change the pitoes and rings without splitting the block? the pistons are melted a little so it needs oversiked pistons and everything else that goes along with that job,first i must get them out?thanks fo your time dave.

 

[Daviet]

Re: What year?

503778 does not convert, are you sure of the model number.
You will have to remove the power head and split it to replace the pistons.

 

[smut]

Re: What year?

Sorry,the model # is 50378r.So what would the secs. be.

 

[mark1961]

Re: What year?

Are you sure its not 50373R? (1973 50HP)......50378R does not compute.

 

[mark1961]

Re: What year?

Twin post

 

[smut]

Re: What year?

Yes it is a 73 50h.p. I also own a 71 40h.p. and it is a points ign. this is a powerpack< the 50h.p.> i think mabe the 50 is a latter year ,it is a 2 cyc. twin carb. with power pack ign., the bottom end seems to be a darker blue.

 

[hidef]

Re: What year?

It is a 73 and you will have to split the block if you want to rebuild it.

http://www.marineengine.com/parts/johnson-evinrude-parts.php?year=1973&hp=50&model=50373R