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Old 07-12-2013, 10:29   #1
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Schucker refit

Just bought a Schucker 436 in need of a complete refit. I have done this work before on a IF 36 before so I pretty much know what I have gotten myself into. I removed the old Chrysler /Nissan motor and trans. Got the engine room on the way to being clean. Pulled 50 lbs of unused wiring and another 200 lbs of antique equipment. Got the prop flange off the shaft pretty easy considering, using a old flange socket and long grade 5 bolts. The shaft is worn pretty bad at the packing area. There is a fitting on the rear bulkhead that the prop shaft goes through. Two 1/2 bolts hold it in place. The 2 1/4 inch hose connects to it from the stuffing box. I checked the tightness of the bolts and the starboard side snapped off with very little torque. The victim of crevice corrosion of the SS bolt. I have the builders notes and drawings and it looks like this piece was attached to the hull and then a mixture of resin filler was poured around it in the are between this bulkhead and were the shaft exits the boat. I drilled the 1/2 bolt and tapped for a 3/8 screwed the bolt in and all is tight. Good enough?
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Old 02-02-2014, 08:11   #2
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Re: Schucker refit

Making progress on the schucker 436 refit project. I got the borg warner trans back from the rebuilder. I watched as the mechanic tested it using a electric motor to act as the engine. He had a pressure gauge attached as we'll. using 30 weight motor oil pressure came up to 120 lbs. shifting forward to reverse worked smoothly. Some shaft creep in neutral but easily stopped with hand pressure.
The propeller shaft is worn and shows corrosion so a new one is ordered. New stuffing box as well. new coupling fit and faced to shaft. Going to have a RD flexible coupler in line as well. beta 50 is ordered and will be ready to accept the borg warner trans.

Thinking ahead to the replacement of the rotted plywood sole in the cabin. After much inspection I an going to strip everything out of the cabin , I will preserve many parts for possible reuse but it will be a start from scratch rebuild. I plan on using a good grade of exterior 3/4 plywood for sole replacement. Polyester coat the down side and lay a layer of chopped mat down on the up side. Create openings were needed.
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Old 14-02-2014, 16:51   #3
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Re: Schucker refit

Contemplating the location for the sea water strainer for engine. On my IF36 it was located under the floor boards below the water line. On the schucker it was mounted up high above the water line. A much longer route. What should I be thinking about when picking the location for the strainer .
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Old 14-02-2014, 17:28   #4
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Re: Schucker refit

I would and am going to keep our water strainer below the water line. This way the raw water pump will not have to work as hard and less chance of a air lock situation. Since we always close engine raw water intake valve when we leave the boat flooding is not that big of a worry. One worthy note is our whole engine is below the water line.

Going by your posts seems like we are at the same stage of a full keel up refit.
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Old 16-11-2014, 10:27   #5
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Re: Schucker refit

Got the Schucker back in the water and up to glades boat yard. Everything went fine on the 50 mile trip up river. She steers like a pig for sure. In fact right at the start I thought the hydraulic steering was fouled up. I got the hang of keeping her more or less on track. Fuel burn is a rad over 1/2 gallon an hour at 5 knots. A little less than 3/4 at 6 knots. The prop held the engine a few hundred rpms below redline. But the last 500 rpm did not increase boat speed any and a rumbling sound could be heard. So for now the prop I have I deem fine. Other than keeping her straight I had no problems single handing her through the locks and enjoyed the pilot house tee ring experience. Of course I kept close watch on the engine , keeping the hatch open most the time but no problems surfaced. All told ten hours on the engine tach.


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Old 16-11-2014, 10:31   #6
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Re: Schucker refit

Back at glades boat yard let the sanding begin! Going with a lot of Minerets suggestions. Using the makita polisher sander 7 inch soft pad and green corps 36 grit. Took a full day for each side of the bottomClick image for larger version

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This is what I have, literally thousands of quarter sized blisters. Let the grinding begin


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Old 16-11-2014, 10:38   #7
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Re: Schucker refit

A picture after grinding out blisters. Again it took a day for each side using a 4 inch angle grinder and a 3m. Flapper . Most blisters took less than 10 seconds each. None are deep. It's easy to grind down to Click image for larger version

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ID:	91732delamination area and clean it up. My boat is very very dry so no moisture in any blisters. The blisters seem to come in 3 variety a. The older ones I guess are more brown inside and grind out super quick. Others have yet to pop but you can press with a finger and and feel the surface give others don't give much or at all when pressed. I know , very exc


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Old 16-11-2014, 10:46   #8
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Re: Schucker refit

For a change of pace I went after the topside paint with a 6 inch porter cable da sander using 80 grit. The paint was said to be awlgrip but was peeling in places and there was no way I was going to try and paint over it so sanding down to the gel coat was the only option for me. In places I found rust stains painter over. These rust marks were on top of the gel cost and sanded off very easily. I'm concluding from this finding that the boat was not even sanded before it's last paint job, no wonder it was peeling off in spots.Click image for larger version

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I found the gel coat under the paint in very good condition. No damage or crazing, cracks etc. all it will need before primer is a bit of filler here and there to fill in the very few scratches that exist. Again it takes about a day to sand one side. I will need to sand again with 120 before primer but that will go pretty fast


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Old 16-11-2014, 10:47   #9
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Re: Schucker refit

Click image for larger version

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ID:	91734. More top side sanding


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Old 10-04-2015, 14:20   #10
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Re: Schucker refit

Got back to work last week. Here's the rudderClick image for larger version

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Filled the gel coat blisters . The rudder is made in 2 halves glued together. I found the rudder dry inside but it had been out of the water for nearly 2 decades. I went ahead and applied a layer of fiberglass using epoxy resin and the entire perimeter to reduce any chance of water getting past the joint.


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Old 11-04-2015, 11:02   #11
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Re: Schucker refit

Just before I left the yard for a much needed break I prepped the port side top sides and put on a coat of awlgrip primer. It went on easy enough with a roller. It was drying very fast in the shade but temp in the 80,s. Going to try and get two coat on the starboard side with out sanding between coats. Im trying to follow the method of rolling on awlgrip that good old boat magazine laid out in a 2 part article. Will see
Here is a pic of the 2 inch threw hull set up, my plan is to use one threw hull for engine, generator, water maker, ac etc. I'm very aware of potential problems with supplying raw water to multiple systems, I'm pretty sure I can make it work.Click image for larger version

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Old 17-04-2015, 16:53   #12
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Re: Schucker refit

Making progress. Port side is epoxed, interlux 2000 and anti foul is on. 4 coat of awlgrip primer is on the top sides. The fat lady us starting to shape upClick image for larger version

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Old 17-04-2015, 20:16   #13
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Re: Schucker refit

it looks like you are making good progress. Keep up the good work.
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Old 19-04-2015, 17:27   #14
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Re: Schucker refit

Bottom work done, epoxy filler interlux antifoul. Oh my. Getting the primer on the topsidesClick image for larger version

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Old 27-04-2015, 09:53   #15
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Re: Schucker refit

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