Ruh-Roh… a new gear case may be in order

[JimDirt]

Gear ratio is different between a 1990 model and much newer motors.-----You have to be very careful when swapping newer parts into an older gearcase.----Model # on the motor that hit the rock.-----I tell folks that a GPS unit to tell you where the rocks might be is very cheap !!!

The mod # of my broken unit is E40DTLABA I'm aware of the different gear ratios. If I fix this thing I will probably have to get the right prop for it. I'm ok with that.
I appreciate your knowledge and decades of experience. Having worked in the trades for almost 30 years I have an appreciation for people that get their hands dirty. But sometimes I don't quite know how to take one of your posts, or better, not quite sure how to interpret it. Sometimes it seems that your speaking in code or something, or answering questions that I didn't ask. And I don't mind at all if someone is blunt. As long as I'm gettin it. While I don't have tons of experience in O/Bs I am pretty mechanically inclined. I've replaced crankshafts, valves, piston ,rings, repaired transmissions in ATVs and dirt bikes, cars and trucks. And, I've had boats going back to my first in 1985/86. And I've always fixed em, maintained them myself. This is the first gear case that I've busted up, tho. LOL

Anyway, in your opinion, am I wasting my time trying to fix this thing? Oh, an honest question, how does a GPS tell you where rocks are that are 2' below the surface and hundreds of feet from dry land? I have a GPS and it doesn't do that.

 

[racerone]

There are GPS moving charts / maps available for less than $1000 that show your boat exactly where it is relative to land / islands / depth of water under the boat.----Nothing to it.-----I try to teach folks to trouble shoot before making expensive mistakes !-----You can find the charts online for just about every lake / river in the USA and the rest of the world as well.

 

[Mc Tool]

We call them chartplotters here and depending on the actual chart installed you get differing features . Mine shows hazardous rocks as X's and it also give me a map of the ocean floor showing all structure , depth contours .
My neighbour thinks Im mad cos I sit in the boat in my driveway for ages planning my trip and looking at likely places to find fish .
If I hadnt of had one when I moved north to unfamiliar ground I would have ploughed straight into the Paddock rocks just at the bottom of Durville Island ,
I wouldnt go to sea without one . And mine has a "Genesis" mode that records bathymetry in previously uncharted waters and adds it to the chart ( Im talking lakes here as my chart only does the ocean .
I have a Lowrance Hook reveal 9 ts ( triple shot , does sonar , side scan and down scan ) with a navonics C map chart .

 

[Crosbyman]

Marine gps maps will give you bottom contours much like a topo map will give you mountains and valleys. maybe not all the rocks at 2 feet but you will know the bottom is coming up ahead .... and set your depth alarm at an appropriate depth

 

[dingbat]

I have a Lowrance Hook reveal 9 ts ( triple shot , does sonar , side scan and down scan ) with a navonics C map chart .

Guessing you have CMap given Navonics is a Garmin product.

 

[Mc Tool]

Guessing you have CMap given Navonics is a Garmin product.

Yeah , it didnt sound right when I typed it . I lost the package it came in but maybe the 1st gps (Hummingbird ) was navonics gold (I def had that card in one of my gps /plotters ).
I got ripped actually coz I bought the Lowrance and the slimey little in the shop also sold me the Cmap card and when I went to install it I found that it was already pre-installed as part of the deal but because I had opened the card they wouldnt take it back ......which is why I was looking for the packaging so I can sell it on .

 

[ct1762@gmail.com]

I can and will measure the drive shaft and also compare to the old one. the old busted prop fits on the prop shaft on the white unit. So, that's a plus. Also, the blue unit (the broken one) has 2 alignment dowels where it bolts up the motor. The white unit doesn't have any. And the holes aren't big enough to accept the dowels. Should I drill those to make em fit, if I get that far? And how critical is shimming the pinion? As you said, at this point it's worth a try. I could pay the $2600 tomorrow for a refurbed unit, but, I got other things that I need that $$$ for. Like a 28x40 concrete pad that I've just been waiting for the weather. And it's almost time!!!View attachment 406359View attachment 406360

i dont think the dowels are of particular concern, but the shimming sure would be. thats something that must be done. you could get lucky and its fine, but thats a risk i wouldnt take after all that work.

 

[JimDirt]

i believe the etec 40-60hp motors used the same gearcase as a 50-70hp 3 cyl 1989-up but not sure if the driveshaft is the same. just food for thought. you;d need to compare part #'s.

I’m a happy boy! Best advice in this entire thread! It’s gonna work. I changed the shift rod and the water pump housing and it all good.

 

[JustJason]

Call your insurance company and get a new OEM

Technically.... Call your insurance, and see what the policy provides coverage for.....

 

[JimDirt]

The boat isn’t insured

 

[Mc Tool]

I’m a happy boy! Best advice in this entire thread! It’s gonna work. I changed the shift rod and the water pump housing and it all good.
View attachment 406369

Has nobody else noticed ½ the skeg missing ?. Not a.biggie but ...... Definitely an overall win tho good skills Jimdirt .

 

[aspeck]

Oh, I noticed the skeg missing ... I knocked the skeg off of an old bass boat I owned hitting a rock bar at full throttle about 50 feet off shore. Never repaired it ... never felt any difference in the handling of the boat ... nothing ... it was like it was never needed in the first place.

Your mileage may vary ... just what happened to me in a 15 bass boat with a 55hp Johnnyrude and stick steering that was converted to a sideways steering wheel (you drive it like you were in a wheel chair!) many many moons ago (when I was young and dumb ... as opposed to now when I am old and dumb)!

 

[Mc Tool]

After the motor had melted another piston ( long story ) evidenced by melted ally stuck to the spark plug , I slammed the cover back on the motor ( pissing blood )jumped in the car and headed home ,after a few k's I realised I couldn't see outboard cover in rear view mirror. In my haste to depart the scene I had forgotten to raise motor ........it did quite grind right thru the gear case but the skeg and the prop were custard .

 

[ct1762@gmail.com]

I’m a happy boy! Best advice in this entire thread! It’s gonna work. I changed the shift rod and the water pump housing and it all good.
View attachment 406369

i remember now! had a customer with same motor and i did the same thing

 

[JimDirt]

Has nobody else noticed ½ the skeg missing ?. Not a.biggie but ...... Definitely an overall win tho good skills Jimdirt .

Ya I’ll be cutting a chunk off of the blue units skeg and welding onto the white one. I’m going to refurbish the replacement before I put it to use.

 

[Mc Tool]

Ya I’ll be cutting a chunk off of the blue units skeg and welding onto the white one. I’m going to refurbish the replacement before I put it to use.

Yeah I figured you probly would .
I was wondering how that could happen , musta had a good whack from the side, mmmmmm

 

[JimDirt]

Yeah I figured you probly would .
I was wondering how that could happen , musta had a good whack from the side, mmmmmm

Ya me too. The blue one is broken in the front. But I know how that happened.

 

[Mc Tool]

Ya me too. The blue one is broken in the front. But I know how that happened.

Not something you will forget in a hurry I bet . Did you have witnesses , ah I mean passengers on board ?