1976 115 Johnson

[NTNorm]

Ok so the rings are broken on #4 cylinder,no scars yet just small nicks on head, is it possible to replace piston without removing power head from lower unit?
65 psi compression 120/ 118/120 rest 1/2/3.

 

[ezeke]

Re: 1976 115 Johnson

Ok so the rings are broken on #4 cylinder,no scars yet just small nicks on head, is it possible to replace piston without removing power head from lower unit?
65 psi compression 120/ 118/120 rest 1/2/3.

No, you will need to pull the powerhead and take it apart. You will need a ring set, a gasket kit, new rod screws and some gel seal, at a minimum.

 

[NTNorm]

Re: 1976 115 Johnson

Thanks I was afraid of that,It,s been a while since I had her apart,the memory banks are a little slow thees days.
looks like a new piston Rings and a gasket set,
Also is the piston rod pressed in or c clips?

 

[ezeke]

Re: 1976 115 Johnson

Piston kits come with the snap rings and wrist pin. You may need a new caged wrist pin bearing.

Be sure to get a factory sevice manual if you don't have one; it will make the job a lot easier.

 

[F_R]

Re: 1976 115 Johnson

Wrist pin is pressed in. One side of piston is press fit and other is slip fit. Pushing it in the wrong direction will destroy the piston.

 

[NTNorm]

Re: 1976 115 Johnson

Ok where do I find A piston Kit,and what #,s do I need?

 

[emdsapmgr]

Re: 1976 115 Johnson

You should be able to come up with parts/numbers at the Bombardier parts website: epc.brp.com.