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Regarding the 1937 Johnson model 210, opposed twin, 3.3 hp, or
any similar designed engine, whether is has a water pump or is
prop thrust / siphon fed to the cylinders as mine is, (can’t think of the proper term),
doesn’t the incoming water always go into the bottom of the cylinders,
and exit out the top, so the water jackets are sure to stay full of water?I’m putting the motor back together, cleaning up the water lines, etc., and found
one line with an old solder repair where it “Y’s” off to the cylinders, was loose.
After taking the line apart and cleaning it, I went to put it on the motor temporarily
to mark it for soldering, and the only way the lines don’t “cross”, or even hook up,
is if the water supply line goes into the top of the cylinders.
Can this be correct for this motor?The water feed from the “scoop” aft of the prop comes up the starboard side of the motor.
I confirmed that when the gear case was off, and again today by blowing air into the holes
where the water lines go into the gear case.
I also looked at “before” photos,( before I took the motor apart), and the lines are not crossed,
and the supply would have to be on the starboard side.
Signed, perplexed. Thanks for your thoughts.
Trying to feed into the bottom of the cylinders, the top line won’t hook up.
Prepare to be boarded!
Joe, I’ll have to look again tomorrow, and hope the new day (and Easter)
brings clarity. I just found this Johnson 200 (same motor, but earlier?)
and indeed, the water is going into the bottom side of the cylinders.
I thought I tried arranging the lines every way possible, but maybe not!
Prepare to be boarded!
Maybe I’m looking at this too simply but – in the “before” picture, the line connecting to the top of the cylinders follows the starboard side of the driveshaft tube all the way up to the powerhead. In your “top line won’t hook up” picture, that line is now routing up along the port side of the driveshaft tube. Maybe you just have the two lines crossed (top line routed incorrectly – should be to the right of the cylinder bottom line)? But if the starboard side line is the incoming water supply line, then water would be going into the top of the cylinders which doesn’t seem right.
Bob
1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1955 Johnson QD-16
1957 Evinrude Fastwin 18
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20“Every 20 minute job is only a broken bolt away from a 3-day project.”
"Every time you remove a broken or seized bolt an angel gets his wings."
This is my 1933 Johnson OA-65. Cooling water enters
the bottom of the cyl. and exits at the top on this motor.
Having the water exit at the top of the cyl. increases
the siphoning effect .
Tubs
A "Boathouse Repair" is one that done without having tools or the skills to do it properly.
The water lines on the Johnson 210 are now hooked up correctly,
with the supply going into the bottom of the cylinders.
I wonder how long the P.O. ran the motor with the lines plumbed
incorrectly, and how well it cooled the motor?
I didn’t notice any internal damage from over-heating, so
hopefully no harm was done.I had to re-clock one of the water line’s elbow fittings a cylinder
to regain correct alignment, along with tweaking the lines into
submission so the clamp would fit.
I re-soldered the bad joint at one “Y” with the lines all screwed in place,
not to chance a bad fit by soldering the line on the bench.
The water lines, where they insert into the gear foot, have no grommet,
no room for said grommet, etc., so I may try to work some kind of sealant
around them, as the lines are not that tight of a fit in the gear foot.
Prepare to be boarded!
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