94 88 spl

[wht07se]

For starters i am a noob to the world of boats. Ive been around powersports most of my life so im pretty well mechanically inclined. My grandfather an i just recently purchased a 94 1720 key west sportsman with a 94 johnson 88 spl from a friend of ours for $4k. Not sure how many hours are on the motor but its runs really great, (compression 120 in 3 cylinders and about 118 in the other). Seems the boat and motor have been well taken care of. But with some closer inspection once i got the boat home i noticed something that i knows not right. There is a bolt that was loose on the back side of the motor, well more like it was not loose just sitting in the hole where it should have been tight. I tried to retread the bolt back into the hole with no luck, so i snapped a few pics and hope that someone can maybe give me a few pointers. There also looks like there maybe a leak of some type but cant really find where its coming from. I have a oem service manual on the way but not doing me any good right now. Sorry for the long post but thanks ahead of time and thanks for the great site!

Bryan

 

[wht07se]

Re: 94 88 spl

The other pictures are to big to load on the site so here is my photobucket addy. http://s947.photobucket.com/albums/ad320/bburhenne/

 

[ezeke]

Re: 94 88 spl

The hole behind that goes through to the exhaust, so either the original screw is broken off or you should have an exhaust leak at that point. In any event it is probably more important to seal the hole than to have a tight screw at that precise point unless you have a leak.

 

[emdsapmgr]

Re: 94 88 spl

The missing bolt is part number 302288. Similar to the other 21 of them, it holds the exhaust covers onto the back of the engine. If you look around in the lower cowling or the rear lower cover, you may find it. If not, you can get a new one from your local Bombardier dealer. Probably about $1.25 each. If it came out of it's own accord, possible all those bolts may need to be retorqued. You may have some exhaust/cooling water leaking into the lower cowling, so they should be checked. Torque to 60-80 inch lbs. If you get continued leakage, you may need to pull the covers off and reinstall with new sealer/gaskets. Not a big deal to do.

 

[wht07se]

Re: 94 88 spl

Thanks for the responses, i do have the bolt that was in the hole, when i opened the cover and got to looking around yesterday i saw the bolt sticking half way out and went to tread back in and it would not retread. Also the day we bought the thing we ran it for a while on the muffs with the cover off and didnt see it leaking anywhere. If is was leaking around that hole would i have seen the blue smoke like where it comes out the lower unit? Either way i guess i will take the cover off to see what i can see then reinstall. Any special type of sealer to use? I have a ton of honda bond that i use on my race quad, its some good stuff but not sure if good enough for a marine application.

Bryan

 

[emdsapmgr]

Re: 94 88 spl

You'll have to inspect the threads in the block. Hopefully they are not damaged. A caramel-colored gasekt sealer works well on these gasekts, like a permatex type. There is a gasketed surface completely around that bolt. It may or may not leak without the bolt in. If it does leak, you may get some water out of it from the outer water jacket. If the cover is really loose in that area, you may get a little exhaust of of the hole also-from the inner cover.

 

[wht07se]

Re: 94 88 spl

Thanks, like i stated the cover is not loose just the bolt. But will test again once the weather clears and will go from there. Thanks again for the help and im sure i will be back with more question. Hope to enjoy the boat and new hobby.

Bryan

 

[wht07se]

Re: 94 88 spl

Ok, finally got out to run it on the river. Motors runs really strong, but i did have a look at where the bolt is missing and i do have a very minor leak, also really small seep from 2 other bolts further up on both sides of the cover. But my question is being this is a very minor leak will it cause any issue with running it like this or should it be fixed now? Again i am a noob so try not to bash to hard

 

[wht07se]

Re: 94 88 spl

Anyone, bc if need to do a tear down and redo then want to get done soon. BC plan on fishing all weekend this coming week.

 

[wht07se]

Re: 94 88 spl

^^^^bump^^^^

 

[emdsapmgr]

Re: 94 88 spl

A minor external water leak may not be an immediate problem. You might want to just retorque all of the exhaust cover bolts. You may find some of them have loosened up a bit after all these years. The thing you don't want is an internal exhaust cover water leak into the exhaust chest. An internal leak can get water into the cylinders.

 

[ezeke]

Re: 94 88 spl

Just so it is clearly understood, please click the thumbnail. As you see, there is no bottom to the screw holes in the are of the missing screw; they open directly into the exhaust and will leak exhaust into the engine compartment if not sealed.

 

[wht07se]

Re: 94 88 spl

Is there a way to tell if its leaking into the inner without taking cover off? An i know there is a gasket in between the cover and the block but if i was to take cover off could i re use the old gasket, or just use some permetext?

 

[ezeke]

Re: 94 88 spl

There are two gaskets and you will never get the sections separated with the gaskets intact. The gaskets were always put on with sealer because of the temperature changes.

 

[wht07se]

Re: 94 88 spl

Thanks for the info..my manual and oem parts book wont be here till thursday, by any chance someone might have the part numbers for both the gaskets and estimated price? Thanks.

 

[ezeke]

Re: 94 88 spl

Part # 0317914 - you need 2.

Or, order a package of two aftermarket here: http://www.iboats.com/Exhaust-Manif...4687278--**********.471952638--view_id.173851

Parts catalog for your motor is online at: http://evinrude.cust.shopatron.com/