140hp Evinrude

[snookhooked]

this is what I found out on the motor that is on the boat. since I cant get pictures to post I have found a pic of midsection of motor. the motor is a 140hp on it. this website will show a diagram of the bracket area that is rusted on mine that the motors just flops around. http://www.crowleymarine.com/omc_parts.cfm. if you look at the pic, the steering shaft #7 you will see two bolts that hold it into the section there number is #41 and 42. when he attempted to remove them, one is broke off. that whole area needs to be replaced so at least you have some idea of what I am looking at if you see the picture of that motor midsection. maybe you can get a idea if that would be a motor to put money into fixing? I may have a friend who could help me on changing the parts. I haven't found another engine so far and the guy with the Johnson GT 150 hasn't returned any emails so I don't see that going anywhere . I do have a guy with a 1976 200hp Evinrude that hasn't ran in a year and may be a possibility that I could get it running there with a little work before I would buy it. my 1973 65hp sat for five yrs and it took me about 20 minutes to get it up and running, so that might work but two problems. 1) I don't know the weight and 2) if I get it running, he may want to up the price. he only wants $300 dollars for it now. just so much to consider here. Im not sure but thought maybe I should do a new post for this question

 

[emdsapmgr]

Re: 140hp Evinrude

The bolt that broke off holds the steering arm to the upper rubber mount in the exhaust adapter under the powerhead. I would not run the engine till it gets replaced. You will have a tough time drilling it out with the powerhead on. You will need to remove the powerhead from the midsection. This is will take you a couple of hours and you will need some type of engine lifter. Once you remove the powerhead you will be able to easily see the upper mount. You may want to purchase a new one instead of trying to drill it out. When you replace the powerhead make sure you install a new powerhead base gasket.

 

[snookhooked]

Re: 140hp Evinrude

Thanks, that at least gave me some idea of what I need to do and buy a manual to do this. one problem is that this was a motor that has been changed and repainted god knows how many times? I can not find the serial number but at least found what I believe is the diagram of it that I posted on here. all I know is that it is a 1984/85 140ph Evinrude. Thanks for the info and after I get a book and do some reading maybe I will give it a try. since I have never done this before.

 

[kenmyfam]

Re: 140hp Evinrude

Pictures are worth a thousand words for diagnosis and assessment by others. Post the serial number to find out exactly what year it is.

 

[emdsapmgr]

Re: 140hp Evinrude

Since you are not tearing down anything on the powerhead, it is not extremely difficult. You will have to get the powerhead up about 1-2 feet to work, so you will need to disconnect the red plug and the starter cable, and the fuel line to the pump. As a working conventience, I'd take the shift/throttle cables off too. Also the shift linkage under the bottom carb needs to be disconnected. Should be 6 long bolts, 3 per side and some nuts, two in back and two in front. Should be two short bolts also in front. You will need to drop the front and back lower covers to get to them. A conventional automotive type puller mounted on the flywheel can be used to lift the engine. Good Luck.

 

[snookhooked]

Re: 140hp Evinrude

I wished I could get pictures on here but my files are to big and I dont know what I can do to get them smaller. Im in luck that the motor does have a hoist ring on top of the motor to lift it. I just got to build a something to lift it with. the motor has been painted and there is nothing I can find on there in terms of serial number. he had the same problem. he just knows its a 84 0r 85 motor. I will have a marine mech who will come by for 50 bucks and give me a idea of what it will cost for him to do it and what it needs. I figure if it too high in price, I can at least get a idea of what I need to do. the info you have given me has helped out a lot. is there any numbers on the power head that could give me a way to find more info on it? I was thinking of using paint remover on the bracket to see if I could locate a number but seems too much of a risk on what it may do. this may not even be the original bracket. this is a 1976 Mako and this a replacement motor. who knows what all has been done there? its either going to be fixed or work on replacing the motor. its a project in the making but one i will complete either way. Im sure I will be on here with many questions but you dont learn if you dont try. Thanks for the help.

 

[Dhadley]

Re: 140hp Evinrude

If there's a loop on the powerhead it's not a 1985 140 looper. If you pull the powerhead using that loop and with the lower unit still on, be careful. You can easily break the bottom of the crankshaft seal area.

If you're talking about replacing the steering arm you'll have to pull the powerhead, drop the lower unit and pull the midsection. Then you can get to the bottom nut on the steering shaft.

Send me your pics and I'll post them for you - dhadley50@aol.com.

 

[snookhooked]

Re: 140hp Evinrude

I sent you the pictures. at least they give you a better idea of my motor and its problems. Thanks for looking at them and the help.

 

[Dhadley]

Re: 140hp Evinrude

Definitely a crossflow so the newest it can be is 84 if it's a 140. If it's newer it'll be called a 110, 112 or a 115. All basically the same thing.

As mentioned you'll need to pull the powerhead and lower unit. Then you can take the exhaust housing off to get to the nut on the bottom. You might want to check compression if you haven't already. Looks like there has been some idling issues.

 

[snookhooked]

Re: 140hp Evinrude

its a 140hp. I haven't even tried to start it. I looking to getting it paid for in about 2 to 3 weeks. Im only paying 1,000 for boat, motor and trailer. I figure once here I can do a compression check and I need to know what should they read? now I have a crazy question. how did you tell if it looked to having idle problems from the pictures? That amazed me when you said that. I didnt ask too much about the motor history but I do know that he said it has sat now for 4 years and he didn't know if it would run or not. I just figured for that price, I couldn't go wrong. the haul is in great shape not soft spots and clean. Trailer needs very little work. has to spots that Im going to have steel patch removed and new aluminum welded back in. axle is new and hubs. now another question, do you think this motor is worth putting money into or would you suggest maybe looking into finding another one to replace it and what would be reasonable for I couldn't afford a lot but in no rush just to patch up either. safety comes first on this. ideas and opinions are very welcome here. what the difference between a cross flow and a loop? Thanks so much for doing pictures. I just cant seem to get them to work on here. your welcome to email me anytime you can and tell me how so I dont have that problem again. Thanks so very much for your help.

 

[emdsapmgr]

Re: 140hp Evinrude

Hadley's right on. I would not put any effort in the powerhead till you know that compression is ok on the powerhead. You should have 120-130 lbs each cylinder. Each cylinder should be within 10% of the other. Plan on removing the carbs to disassemble and clean them before running if it sat for 4 years. A new water pump impeller would be a good idea also.

 

[snookhooked]

Re: 140hp Evinrude

Thanks for the info. I will check them. I figured the cleaning the carbs due to it not being ran so long. Had to rebuild the carbs on the old Merc I have and thought the same about this motor. believe it or not, that motor sat for five years and I rebuilt the carbs and was doing a test run and it never missed a beat and it was peeing right off the back but someone told me mercs are good about that but since this is evinrude you want to change it but I figured since Im going to have to remove the lower unit, I might as well change it anyway. either do it right or not at all. Thanks for the help I thought about another question. when it comes to the steering cable that connects to the motor. that bar that moves in and out to move the motor right and left. is that mostly same on most boats and motors or if you buy another name brand motor will it change? I know my Mercury has the same type of setup as the evinrude Im getting. but if it comes to where this motor isn't worth fixing, do I need to stay with evinrude, Yamaha I was told would need things change because of its make. I know the throttle would be different but would the steering setup be the same as others? my dumb question but this whole deal is a learning point to me and I want to learn more about everything in the boating area. Thanks again

 

[emdsapmgr]

Re: 140hp Evinrude

The steering cable end that goes through the engine pivot point is pretty much standard. All make engines use the same thread on the tube for the cable. You may find that the link arm varies. If you stay with an OMC/Bombardier, you can probably use the one that's with the boat.

 

[snookhooked]

Re: 140hp Evinrude

Thanks. I found a 115 1975 Johnson running but wasn't for sure and a 75, that's a old motor but he wants 600 dollars and that good price I think but would need to do a compression check before I would buy. I sent a email back and he says he is for sure that it idled fine.

 

[snookhooked]

Re: 140hp Evinrude

Ok. I went and look at the other motor today. its a 1975 115 hp Johnson. I have the serial and model number off this motor. Serial # J4323837T and the model # is 115ESL75E. from looking at that motor and looking at the one on the boat. they look almost like twins. now my question here is this motor has no t/t but the one on the boat does. I'm thinking maybe I could swap out the bracket for this motor to have t/t. I don't want a motor this size without it. I only have the pics of the motor on here. that bracket on the boat doesnt have any way of getting either a model number of it. tell me what you think. Thanks

 

[Dhadley]

Re: 140hp Evinrude

Although the motors look alike they aren't. Yes, they are both crossflows but that's about where the similarity ends. The powerheads have different mounting bolt patterns. You can modify the newer powerhead to fit on the older midsection but not vise versa. Besides, the older midsection doesn't have trim & tilt. The lower units won't interchange. Different bolt patterns and differnt sizes.

 

[snookhooked]

Re: 140hp Evinrude

Ok, I left my question with no response. I hvae a $600 dollar budget here and replacing this motor is going to be a slim choice. I asked about the bracket because if they could interchange I could save some money and have a working motor but I could have a working motor but no t/t if I just mounted the 76 115 Johnson. people don't seem to have a problem asking $1,200 for motors that are around and over twenty yrs old and that a big risk for anyone dealing out that much cash and have a motor runn for a few yrs and then die. Im looking at around $1,100 or more to have that midsection fixed. it seems cross flow motor aren't too loved on here. what do i do? I want to do the right things with what little budget I have to do with. Thanks for the advise