1963 75 hp johnson piston rings

[dieselmax]

Hi been doing lots of reading here and getting lots of help but now i need piston rings and wrist pin bearings for a 1962/63 75hp johnson <br />model# v4al-15e are these still available anywhere or am i up the river without a motor? <br /><br />any help would be great.

 

[Droll]

Re: 1963 75 hp johnson piston rings

When restoring my old 90hp Johnson I got my pistons/rings from this place Stone & Sons Marine ,I think they got all the parts you want .<br /><br />Or you can try your local outboard shop , don't know about the rings but I think the bearing is available ( If it's the same as my 90hp it's #378251 needlebearing wrist pin )

 

[dieselmax]

Re: 1963 75 hp johnson piston rings

Thanks for the quick reply i've come across a set of 12 piston rings for a 1969 85 hp johnson<br />part #383680 does anyone know if these will fit my 1962 75hp johnson?

 

[CFronzek]

Re: 1963 75 hp johnson piston rings

Your motor is a two-cycle. Two-cycle engines need good piston and ring seal to produce adequate power. If your cylinders are worn so are the rings and the ring grooves in the pistons. All of this stuff makes for bad piston seal and should be corrected with new bores, pistons and rings. Even if your bores and pistons are usable re-ringing with parts that may not be correct has a good chance of a poor result.

 

[dieselmax]

Re: 1963 75 hp johnson piston rings

I understand that but thought maybe they would be the same bore and piston type on both motors, wasn't sure if there would be a difference

 

[Droll]

Re: 1963 75 hp johnson piston rings

Don't know if those rings will fitt , but I would guess they do IF they are for a 3.375 bore .<br /><br />"ALL" Johnson/Evinrude V4 engines between 1960 - 1972 , 75hp to 100hp are using the same bore .<br /><br />Only difference was the 85hp in 1969/70/72 and 100hp 1971/72 ,they used a different stroke .<br /><br />But before you start working on this engine , messure the cylinder bore .<br />

If the bore is tappered, out of round, or worn more than 0.003" - 0.004" the cylinder should be rebored and ovesize piston and rings installed

Quote from Seloc manual. <br /><br />Good luck

 

[dieselmax]

Re: 1963 75 hp johnson piston rings

my local parts outfit finally got back to me they can get the rings for $73.06 a cylinder is that an alright price? is this worth rebuilding ? bottom end seems strong but i'm not sure if i should sink the money into something this old

 

[Droll]

Re: 1963 75 hp johnson piston rings

Paid this for the rings for my Johnson 90hp /1964:<br /> Rings .020 over ,#378434 60.07 per set<br />At Stone & Sons Marine , + shipping