Muskoka Mystery Boat/New member

Outboard designs up to 14'

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gster
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Joined: Sun Jan 06, 2019 12:09 pm
Location: Toronto, Canada

Muskoka Mystery Boat/New member

Post by gster » Sun Jan 13, 2019 4:54 pm

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Last summer, a small (13'-6") runabout came to me.
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There are no markings or tags on the boat which leads me to believe it may be a
mid 50's kit boat.
The boat's been in storage for years and has some nice fittings as well
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Work will continue in the spring.
I do have a motor question.
I've bought a 1965 Mercury 500 (short shaft)
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that was missing the bottom unit.
I bought another one for parts and on
disassembly found the drive shaft quite pitted.
(photo to come)
Could this be a deal breaker?
Should I search out another drive shaft?

gster
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Joined: Sun Jan 06, 2019 12:09 pm
Location: Toronto, Canada

Re: Muskoka Mystery Boat/New member

Post by gster » Sun Jan 13, 2019 6:32 pm

I'm having some trouble with the photo posting format but will figure it out..

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hoodman
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Location: Lafayette, IN

Re: Muskoka Mystery Boat/New member

Post by hoodman » Mon Jan 14, 2019 7:50 am

It doesn't look like any of the Glen-l boats to me. I don't think any of his have that much crown in the deck. Post a picture of the shaft. I can't help you but someone will be able to. Cool looking boat!
Matt

Building a Geronimo......!
viewtopic.php?f=2&t=25139

BillW
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Location: Seattle, WA

Re: Muskoka Mystery Boat/New member

Post by BillW » Mon Jan 14, 2019 11:41 am

That's a nice looking boat, and motor. The 500 was considered to be one of the very best.

In case you have not been involved with vintage Mercury outboards before, here are some resources that will help:

www.oldmercs.com Parts and manuals. You will need a service manual.

www.marineengine.com Parts. You order from a parts manual format with drawings making it easier.

www.fergusonpoolemarine.com Hard to find parts, and Joe has expert advice.

www.johnsoldmercurysite.com Expert opinion and advice forum.

Be sure to replace the water pump impeller before trying to run it. Probably it will need other things too; fuel pump kit, carb kits,
ignition service. Change the gear case oil and check for water in there. If there is none, and it remains that way after a few runs,
then it's probably sealed ok, and the rusty shaft is probably ok. But ask the guys at Johns Old Mercury Site about this.

PeterG
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Location: Connecticut

Re: Muskoka Mystery Boat/New member

Post by PeterG » Mon Jan 14, 2019 2:16 pm

It's possible that boat is a Chris Craft or James Craft kit boat. CC was selling a kit of that size and style back in the 50s and 60s, James Craft re-issued it many years later but it's no longer available. That one looks to be in great condition, worthy of sprucing up/restoration. The Mercury outboard you have is definitely a 1965 vintage motor with an electric starter (no pull cord!) and magneto ignition. It's an excellent choice to fix up or restore and easy enough to find parts and info through the links that BillW provided. The red stripe motor you have in the background looks like a 1969 and a good parts motor for the older one but has an electronic ignition which is not backward compatible. The magneto is nearly bulletproof, just needs a tune up with possibly breaker points and condenser. The drive shafts in the 1960's Mercs were steel and often are corroded especially at the water pump seals. You can replace it with an NOS one, short shafts are easy to find (long shaft ones not so much). You could install a later stainless Mercury drive shaft (starting I think 1969-ish to 1979-ish vintage) but may require a new pinion gear and will require proper set up of the gear lash. You can find NOS drive shafts and pinions on ebay or through www.marineengine.com (they source parts from www.seawaymarine.com, another great resource). Try searching on the Mercury part number. All this info is available, don't let any of this scare you off. I restored a 1965 Merc 650 a while back, a fun project I should post here on the forum.

Here is a link to Roberta Hegy's lower unit rebuild for her 1969 Merc 500: viewtopic.php?f=9&t=13928

Good luck and we are all here to help so feel free to ask!
Murphy's Law: Anything that can go wrong, will go wrong.
Griffin's Law: Murphy was an optimist.

gster
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Joined: Sun Jan 06, 2019 12:09 pm
Location: Toronto, Canada

Re: Muskoka Mystery Boat/New member

Post by gster » Mon Jan 14, 2019 5:32 pm

Thank you all for the comments and advice.
Here are some shots of the drive shaft in question.
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As you can see quite rusty and pitted.
A new water pump kit is a must.
I thought perhaps a Sears kit boat.
All in all quite sound.
I don't think it actually spent much time in the water
before it was put away.

Let me read through the comments to digest the info.
P1200227.JPG

gster
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Re: Muskoka Mystery Boat/New member

Post by gster » Mon Jan 14, 2019 5:36 pm

Roberta's lower unit rebuild post(s) is what prompted me
to join the forum.
I've been in touch with oldmercs and received
some helpful advice.
Thanks again and more questions
sure to follow.

PeterG
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Joined: Mon Dec 03, 2007 7:08 am
Location: Connecticut

Re: Muskoka Mystery Boat/New member

Post by PeterG » Mon Jan 14, 2019 7:28 pm

The corrosion on your shaft is definitely acceptable, not serious enough on its own to replace it. What will matter is the part where the pump seals contact the shaft. You'll see it when you pull the upper and lower pump housings. If it has any grooves or it's pitted or looks like Roberta's shaft did, then it will need replacement.
Murphy's Law: Anything that can go wrong, will go wrong.
Griffin's Law: Murphy was an optimist.

gster
Posts: 9
Joined: Sun Jan 06, 2019 12:09 pm
Location: Toronto, Canada

Re: Muskoka Mystery Boat/New member

Post by gster » Mon Jan 14, 2019 7:41 pm

Alright.
Sound advice.
I looked at the prices of new shafts
and was getting nervous...
I'm in Toronto and the exchange rate
would add 30%...
I'll have closer look.
Thanks

gdcarpenter
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Location: Raleigh, North Carolina

Re: Muskoka Mystery Boat/New member

Post by gdcarpenter » Tue Jan 15, 2019 8:17 am

Hi, displaced Cannuk originally from outside Sudbury, now in Raleigh, NC.

I agree that the pitting shown is not of any significance.
The driveshaft goes down immediately into the water pump, and the water pump cover plate holds a seal. You should, at the very least, remove the water pump cover and inspect, and replace, the water pump impeller. If the machined part of the driveshaft is significantly damaged where the seal sits that could let water enter the gear case. You could research, as some use a "Speedy Sleeve" to repair the damage machined surface of the driveshaft in lieu of replacing the shaft.

You should also definitely drain the gear case and replace the gear case lube. This will let you know if water has already entered the gear case when you see what drains out.

Not to discourage you but replacing the driveshaft is no easy task.
This is my first, last and only boat build.

http://www.gdzipbuild.blogspot.com

gster
Posts: 9
Joined: Sun Jan 06, 2019 12:09 pm
Location: Toronto, Canada

Re: Muskoka Mystery Boat/New member

Post by gster » Wed Jan 16, 2019 4:50 am

I've had the impeller cover off but did not proceed further.
I can see the impeller is worn/distorted.
I'll remove it and inspect the shaft at that point.
Will check the oil as well.
The boat's in the garage for the winter so work is on hold until the spring
But I have access to a heated shop starting tomorrow so
I'll try to make some progress on the motor.
Thanks
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Bill Edmundson
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Re: Muskoka Mystery Boat/New member

Post by Bill Edmundson » Wed Jan 16, 2019 7:01 am

gster

Please add your location to your profile.

Bill
Mini -Tug, KH Tahoe 19 & Bartender 24 - There can be no miracle recoveries without first screwing up.
Tahoe 19 Build

PeterG
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Joined: Mon Dec 03, 2007 7:08 am
Location: Connecticut

Re: Muskoka Mystery Boat/New member

Post by PeterG » Wed Jan 16, 2019 8:01 am

That's a fine looking Porsche 914 you have there! Great idea racking/stacking the toys to keep them safe. A friend of mine keeps two of his three (!) Shelby Mustangs like this too.
Murphy's Law: Anything that can go wrong, will go wrong.
Griffin's Law: Murphy was an optimist.

gster
Posts: 9
Joined: Sun Jan 06, 2019 12:09 pm
Location: Toronto, Canada

Re: Muskoka Mystery Boat/New member

Post by gster » Mon Jan 21, 2019 6:16 pm

Some work was accomplished this summer/fall.
Stripping/cleaning and acquiring parts.
Some varnish was applied but the real work will be on the hull
in the spring, which appears to be in good shape.
The old screw hole filler was loose and is coming out
and will be replaced.
I suspect that I'll have many questions re: technique and materials.
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