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desimulacra
03-26-2015, 07:14 AM
I have saved my pennies and will be installing a new engine and steering into my single engine 77 Sumerset 14x58 this spring.
The present mercrusier engine is shot. It is a 305 chevy hooked to a transmission. The components like the carb, water-pump, alternator are almost new. I plan on getting a rebuilt engine, long block, from someone like Grooms or Jasper and reuse those components. I will also be needing exhaust manifolds and have not started research on them.
Also the steering cable is shot and though I tried everything including the cable oiler on here it was not savable. I am going to replace with hydraulic steering but have not started research on that.
My plan is to replace the engine dockside and have the ok to do so. The goal being a drive train that will be trouble free for years.
Any help or advice is appreciated, especially if you have been there and done that.

easttnboater
03-26-2015, 07:38 AM
"Hooked to a transmission" - what exactly do you mean by that?

Typically, a mid 70s Sumerset would have an Mercruiser Alpha or Bravo outdrive. But, there were a lot of custom propulsion combinations put in those boats - so, anything is possible. If you have a traditional Mercruiser engine/outdrive setup, then it is going to be pretty hard to replace the engine dockside and get the alignment to the outdrive right without pulling the boat, pulling the outdrive, and using an alignment tool. If you do not get it right, then you will eventually be pulling the boat, probably pulling the engine, replacing the coupler, pulling the outdrive, and aligning it.

Hydraulic steering is actually pretty easy to install. The hardest part is probably going to be routing the hydraulic lines from the front to the rear. The parts are not cheap, but it is pretty simple to do.

desimulacra
03-26-2015, 07:56 AM
I have a TR which has a trans. "Merctrans" I think?? that that will make a dockside switch easier...? As far as routing the lines when I pulled the cable I left a rope in place. Who should I go to for steering?

easttnboater
03-27-2015, 06:39 AM
I do not know anything about that outdrive setup. Maybe others will chime in. I am sure that alignment will be just as important.

I bought my steering from a discounter/overstock place online many years ago. Just look online and you should be able to run up on a decent bargain.

Mountaineer 67
03-27-2015, 02:57 PM
Can't do it on the water. You have to pull the drive and loosen the nuts on the tranny snout. Alignment is also very critical as the output shaft of the tranny can get destroyed if the alignment is off. I learned the hard way.

OLD HOUSEBOATER
03-28-2015, 03:19 PM
Can't do it on the water. You have to pull the drive and loosen the nuts on the tranny snout. Alignment is also very critical as the output shaft of the tranny can get destroyed if the alignment is off. I learned the hard way.

He has a Merc Trans setup. The transmission STAYS WITH the drive. You just remove the bell housing bolts at the engine and pull it foreward and up.

Mountaineer 67
03-28-2015, 11:18 PM
With the merc trans he will need to make sure he installs new pilot bushings in the rear of his crank shafts. They can be bought from KC marine. I had a customer who negated installing the pilot bearing after an engine swap. His transmission didn't last long.

OLD HOUSEBOATER
03-29-2015, 08:47 AM
With the merc trans he will need to make sure he installs new pilot bushings in the rear of his crank shafts. They can be bought from KC marine. I had a customer who negated installing the pilot bearing after an engine swap. His transmission didn't last long.

FOR SURE. Crank pilot bushing is the #1 cause of failure for MercTrans

desimulacra
03-30-2015, 06:13 AM
Hmm Thanks guys..so per Old Houseboater I can do this. I found a place that will rebuild the trans for $850.00 and warranty it. I think while at this I will rebuild the trans too, just money right.

OLD HOUSEBOATER
03-30-2015, 08:19 AM
KC Marine is the GO TO place for Merc Trans. I wouldn't go anywhere else. There arent a lot of these puppys in existance and KC has them nailed. Warrenty is fine but it's much better to have it remaned and pretty much be assured that you'll never need it.

desimulacra
03-30-2015, 11:09 AM
KC is who I have talked to!

Mountaineer 67
03-30-2015, 12:00 PM
I have pulled a merc trans on the water and re-installed it....1972 Nautaline. I don't recommend it. If the rubber expansion ring on the tail shaft isn't compressed too much u might pull it off. You will have to rig a wire onto the u joint shaft and have all the stars line up when u reinstall it. Make sure you install the thrust washer that the u Joint tension spring rides on with grease so it won't fall out while you are trying to get it together....I was told it couldn't be done on the water so I did it. After doing so, I told myself I would never do it again on the water, and haven't. Good luck.

easttnboater
03-30-2015, 02:30 PM
As I said, I have no knowledge of your setup. Based upon what I read into OHB and Mountaineer's responses is that - yes it CAN be done the way you are wanting to do it, but only if you know what you are doing. It seems to me that you are spending a lot of money to get things right on your boat. If you do not get the alignment correct and all the parts in place, then you will blow the tranny that you just rebuilt. So, like most things in life it is risk vs. reward. I would write out all of the costs to do it in water vs. out of water and see if the risk is financially reasonable.

Good luck either way. Let us know how it works out.

desimulacra
04-06-2015, 03:03 PM
Looking at Having the local marina do the work. Will post results.