79 35953A powerhead replace with E25 RLCNB Work ??

boatNweather

Recruit
Joined
May 12, 2008
Messages
3
Hello all !

I have a question and hope I can get a quick answer, Thanks in advance.

I have a 79 Evinrude 35953A which was overheated to point that wiring harness jacket(?) melted somewhat at clamp location on powerhead. It has slightly scored lower cyl. as well. I have no idea of compression since I bought boat/motor combo after this event and cyl. head was removed and gasket lost. so assuming worse case I am looking to replace powerhead with least expensive solution and get on the water ASAP. Then assess damage and solution to it on rainy/windy days LOL.

So I have located a E25 RLCNB (1982?) powerhead which is supposed to be a runner for a very reasonable $100

The S/N on my bad one is E00055xx and E25 is 00744xx

Will the E25 powerhead match up with 35 lower and all other parts involved? is this a doable project?? HP of project is not a concern either.

I believe that I have read somewhere that the difference is carbs of 25/35HP,True??

Regardless of the HP will the powerheads swap? carb on E25 is not available/included so I will need to use my current carb from 35HP, I see the manifold gasket is same but I've not yet compared other parts.

my 35 is remote start/steer and I think the 25hp is rope start tiller steer, right? if so will it be possible to assemble as elec. start using my orig. parts??

Thoughts ?? I am able to do work and do have access to any special omc tools etc. as my best friend is 100+ miles away and OMC master. He is not available today or the next few though and I need to jump on this E25 I've found is reason for quick answer I'm seeking.

Thanks guys!
 

milliesdad

Petty Officer 2nd Class
Joined
Dec 20, 2010
Messages
168
Re: 79 35953A powerhead replace with E25 RLCNB Work ??

Compare power head to lower unit gasket numbers.If they are the same, it will mate to the 35. Hard to tell about the elect start as the brackets could be different, so you should check part no's there, too.
 

boatNweather

Recruit
Joined
May 12, 2008
Messages
3
Re: 79 35953A powerhead replace with E25 RLCNB Work ??

Thanks milliesdad, I was thinking the same about checking gasket X check

I wonder about drive shaft fit ??

I think I may jump on it while available, worse case is I'll be listing a few parts/powerhead if its a nogo situation.

have a Great weekend all!!
 

jasper60103

Commander
Joined
Sep 18, 2008
Messages
2,055
Re: 79 35953A powerhead replace with E25 RLCNB Work ??

Thanks milliesdad, I was thinking the same about checking gasket X check

I wonder about drive shaft fit ??

I think I may jump on it while available, worse case is I'll be listing a few parts/powerhead if its a nogo situation.

have a Great weekend all!!

Yep, the drive shaft is the same.
I sent you a PM.
 
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