Frozen 3hp Johnson

kfa4303

Banned
Joined
Sep 17, 2010
Messages
6,094
Re: Frozen 3hp Johnson

Oh yeah!!! That's two old OMCs brought back to life today. Spring is in the air indeed. Gotta love those old 3hp. So light, smooth and strong. Cool lookin' too. Congrats!
 

14 foot Starcraft

Petty Officer 3rd Class
Joined
Apr 24, 2013
Messages
76
Re: Frozen 3hp Johnson

good job I would let it run a tank of gas through with allot of seafoam to help clean those rings. I would put like half of a thing of seafoam in with a full tank of gas and just let it sit and run until it runs out then take it apart and double check the rings
 

boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Re: Frozen 3hp Johnson

If it's running good, why take it apart ????:confused:
 

boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Re: Frozen 3hp Johnson

If it's running as good as he says it does, I don't think the rings are stuck.
 

14 foot Starcraft

Petty Officer 3rd Class
Joined
Apr 24, 2013
Messages
76
Re: Frozen 3hp Johnson

yah possibly but its always better to be safe than sorry. its only some flat head screws to remove the exhaust cover again and take a peek.
 

dreamen

Seaman Apprentice
Joined
May 1, 2012
Messages
34
Re: Frozen 3hp Johnson

I think the seafoam is a great idea, do not think the rings are frozen to the piston or there would not be the compression there is. If they are partially stuck I believe they will free up with use. Even if I took off the exhaust cover you cannot tell if rings are free. For me it is not worth tearing it all the way down. Once I get this on a boat is the only real way to see how much power it has. With a foot of snow being predicted tonight and tomorrow it will be some time before I get this on a boat.
 

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
38,501
Re: Frozen 3hp Johnson

When you take off the exhaust cover you can push on the rings to see if they spring back.--Easy to check.
 

boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Re: Frozen 3hp Johnson

Put some fogging oil in the cylinders if you're going to leave it sit for awhile.
 
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