1979 Evinrude 140 hp powerhead rebuild questions?

[Theoutdoorsman]

Sorry to double post this question guys, but my other thread appears to be stagnant. Does anyone know of a trick to installing the retaining rings in the pistons without the use of the Special Tools Cone and Driver? Any tips or tricks would be much appreciated. Thanks in advance...................ALAN

 

[Dhadley]

Re: 1979 Evinrude 140 hp powerhead rebuild questions?

You can do it by hand with the help of a very small screwdriver or a pick. Make sure they are completely seated in the groove. Watch your eyes.......

 

[Theoutdoorsman]

Re: 1979 Evinrude 140 hp powerhead rebuild questions?

Watch your eye's.........LOL........been there done that. Twice now, I've had to go looking for one. d

Now that the clips are inserted in one of the pistons, I've got 1 more question and one concern............ first the concern:

CONCERN: When installing the clips I ever-so-slightly nicked the outside piston wall, around the wrist pin holes, with the ends of the clips themselves. It appears almost impossible to get them into the groove without some type of scratch being present afterwards. Seems minor, but I'm certainly no expert at this either. Please tell me I didn't just screw this up at the very beginning of the rebuild and lose a pint of blood from a stab wound via my pick for nothing.

QUESTION: When they returned my crank, I noticed they had removed all 6 of the seal rings, placed them in a bag, and shipped them back to me, still seperated from the crank shaft. Now I have no idea as to the proper placement of the seals. How do I know where they were before shippment? I didn't realize they'd remove them, or I'd have done so myself and labeled everything.

Thanks in advance...................ALAN

 

[Theoutdoorsman]

Re: 1979 Evinrude 140 hp powerhead rebuild questions?

Had to hold up on rebuilding to wait for two new correct size wrist pins to arrive tomorrow morning. Seems they packaged the wrong size with two of the kits. Can anyone answer these questions? Am I finished before I even get started? I'm going to check for clearance on the crank seals to make sure I'm within speck, as per the service manual, while I'm waiting on the wrist pins. If the piston scratching is a common thing, can I go ahead and pop 2 of them in, put the crank in place, and slide the other 2 rods/pistons in later? Or should I hold up right here until the correct wrist pins arrive and only then proceed with the insertion of the crank shaft? Thanks..................ALAN

 

[Dhadley]

Re: 1979 Evinrude 140 hp powerhead rebuild questions?

The scratches on the piston can be cleaned up with a Scotch Brite pad or emory cloth. Nothing to worry about.

Same with the seal rings, it doesn't matter about the order, they're all alike. Don't worry about measuring anything. OMC discontinued the oversize rings long agao. We're more concerned thet they move freely rather than the actual fit.

You can go ahead with getting the crank in the block if you like.

 

[Dhadley]

Re: 1979 Evinrude 140 hp powerhead rebuild questions?

Just a thought -- when you go to install the clips, install one before you put the pin in. Stick it in with the gap end to you. Once it's in use the screwdriver or whatever to flip it and it should pretty much pop in the groove once it gets close. Just make sure to get the gap end anywhere except at the notch.

 

[Theoutdoorsman]

Re: 1979 Evinrude 140 hp powerhead rebuild questions?

I accidently warped one of the clips, but I took the clip back out and reshaped it with a pair of needle nose pliers. It appears to fit just fine now. Does the clip need to be replaced, or am I good to go, so long as it conforms to the groove in the piston and has a nice tight fit with a "snap" in place? The seal rings are now back on the crank. Thank you a bunch for the info. Also, I recieved the wrist pins today. Seems Wiseco agreed to pay for next day air delivery of my proper pins. If you could give me a pointer or two on installing the seal in the lower crank case head, I might possibly make a lot ground tonight. That's all that is keeping me from getting this thing off the ground, with the exception of the wrist pin clip of course. Again, many thanks to you for the excellent info you've offered...................ALAN

 

[sand716]

Re: 1979 Evinrude 140 hp powerhead rebuild questions?

I need advice on the best way to part out a 1972 65hp evinrude electric shift model 65273S (yes, it's a 1972). I overheated it and I think it's only running on 2 of the 3 cylinders. I need to get the most out of it so to replace it. Any suggestions. Looks like ebay will only fetch low end prices for the parts. Any suggestions would be greatly appreciated. I kinda got taken when I bought it. email or even call. I need help getting the most. 817-795-5840. Thanks and god bless. Darrell

 

[Dhadley]

Re: 1979 Evinrude 140 hp powerhead rebuild questions?

Replace the clip. Period. If it's a Wiseco piston, use a Wiseco clip, not an OE.

 

[Theoutdoorsman]

Re: 1979 Evinrude 140 hp powerhead rebuild questions?

I'll check with some local dealers and see if I can locate a clip first thing tomorrow morning. However, tonight, I'd like to get this crank in. Then I'll feel good about today's progress. So far, everything has gone rather smoothly.........and slow going. I'm trying really really hard to take this slow....... d ......... Seems easy to just take off....... LOL .........If you can give me a pointer or two on getting that seal in, I'll get that crank in and wrap things up for the night. Thanks a bunch.............. ALAN

 

[Dhadley]

Re: 1979 Evinrude 140 hp powerhead rebuild questions?

The lip goes down. Press on the flat side.

If the local guys don't have a Wiseco clip send me an email at dhadley50@aol.com.

 

[Theoutdoorsman]

Re: 1979 Evinrude 140 hp powerhead rebuild questions?

Are you saying this isn't the correct position of the seal? I still don't have it seated as of yet, so it can be repositioned. If this is indeed the case, it was installed backwards before I started this rebuild. Hmmmm.........Thanks.........ALAN

 

[Theoutdoorsman]

Re: 1979 Evinrude 140 hp powerhead rebuild questions?

I need an expert opinion on this.............use it or trash it? Mar-Fab has repaired the head and says it should be OK for use. I just have a hard time believing I should continue using it. But then again........I've been wrong before. What do you think?

 

[Dhadley]

Re: 1979 Evinrude 140 hp powerhead rebuild questions?

The seal will work that way but it's supposed to go the other way. Now, here's one for you -- the lower cap on the early 3 cylinder and 2 cylinder are the same. The ends of the crank is the same. The book calls for one to go in lip down and the other to go in lip up. Beats me, both ways work.

Hummmmm.......I wouldn't use that head but that's just me. It wouldn't surprise me if it was OK and lasted many years but I think I'd have a hard time bolting it on.

 

[Theoutdoorsman]

Re: 1979 Evinrude 140 hp powerhead rebuild questions?

My thoughts exactly on the head. As far as the crank head seal goes, I think I'll go on and press it in as is then, or maybe I'll turn it over.........hmmmmm???? .......... If I leave it as is, the lips of the seals will face each other. And the last seal seems as though it did it's job very well. I think I just answered my own question, huh? I'm going to take a rookie chance here and press it on in as is. Although, it would be easier to put in if it were turned over. I guess that's what had me puzzled in the first place. Oh well, if it really doesn't matter, it's going on in like the last one. Here goes nothing................. Thank you again!!!!.................ALAN

 

[Dhadley]

Re: 1979 Evinrude 140 hp powerhead rebuild questions?

If this is a 79 crank and cap, there's only supposed to be one seal in there.

 

[Dhadley]

Re: 1979 Evinrude 140 hp powerhead rebuild questions?

Oh, and make sure you have new O rings on the 4 ss screws in the cap.

 

[Theoutdoorsman]

Re: 1979 Evinrude 140 hp powerhead rebuild questions?

Oh, and make sure you have new O rings on the 4 ss screws in the cap.

Is the part number on these "O" rings 332585 ?
I have noticed the seals on the screws when I took them out, but there is no mention of these seals in the service manual. Wonder why?

As far as the crank seals, I was referring to one on each end of the shaft. Don't scare me like that.......... d

 

[Dhadley]

Re: 1979 Evinrude 140 hp powerhead rebuild questions?

The top seal has to go in lip down.

Yes, that's the O ring number for the 4 ss screws.

 

[Theoutdoorsman]

Re: 1979 Evinrude 140 hp powerhead rebuild questions?

Thanks for the verification on the "O" rings. I had a hunch that is what they were for, but I was really beginning to wandering. As I said before, there is no mention of them in the manual during the crank shaft installation section. Hmmmm? As for the lower crank shaft head seal, I've already seated the seal like it was in the picture above. Maybe I misunderstood you, but I thought you said it really didn't matter? After all, this is the way it was positioned when I took the old one out. Do you think it will be OK as is? I'm certain it can't be taken out and turned over as this will likely cause serious damage to the seal. Thanks!..............ALAN

P.S....... I have updated the photo to show a closer, and clearer, view of the seal and head. You may have to refresh your browser to view the NEW picture.