Muffs for vintage OMC’s

[Buccaneer]

Steve, thanks for clearing that up!

Prepare to be boarded!

[David Bartlett]

I made something like Steve posted using an old washing machine water hose as it had the hose connection on it and was smaller ID than a regular garden hose. Brazed a fitting onto a piece of scrap steel.

David Bartlett
Pine Tree Boating Club Chapter

"I don't fully understand everything I know!"

[Buccaneer]

I made up a test hose a couple of hours ago. I also used a double female
washing machine hose……. cut it in half, so I could make up another unit
if I get the urge.
I used a scrap piece of 3/4″ x 1/8″ galvanized strap metal that I had,
and drilled (29/64″) and tapped it for 1/4″ pipe thread.
A 1/4″ npt air tool coupler fitting screwed into the plate, and fit inside of the 3/8″ ID
washing machine hose nicely.
Though evidently not necessary, I laid a piece of rubber gasket material over
the hole going to the intake screen, and put a nut over it to keep it in place.
(Hope I remember to take it back out!)
I have not tried it out yet……. the heat, for Minnesnowdens is somewhat oppressive today.
Maybe later today.
P.S.- I had to use some longer #10 bolts to attach the test plate to the motor

Prepare to be boarded!

• This reply was modified 4 years, 10 months ago by Buccaneer.
• This reply was modified 4 years, 10 months ago by Buccaneer.

[David Bartlett]

There ya go! If the women don’t find you handsome, at least let them find you handy!

David Bartlett
Pine Tree Boating Club Chapter

"I don't fully understand everything I know!"

[Bob Wight]

Quick and easy enough. I have some materials in the shop so think I’ll make up one of those myself. Sure will be easier than filling and draining the test barrel every time I want to run a motor.

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."

[Steve D]

That’ll work out great. So what if you have to go to the laundromat for a while 🙂

[Buccaneer]

The water supply test plate in action.
Maybe I should have made a gasket for the test plate, but
it seem to move plenty of water thru the motor.
First time I’ve ever heard this one run………. it shows promise!
I did not attempt to adjust the high speed.
In my haste I hit the start button and nothing happened, and then
realized this was the motor that I robbed the mercury switch from
2 years ago. Had to jumper the wires for now.

https://youtu.be/Hjei-thmqkM

Prepare to be boarded!

[Bob Wight]

We have a runner! Great restoration and good job on the water test plate. Also like your test stand starter box.

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."

[Steve D]

“Maybe I should have made a gasket for the test plate”

You can’t see it too well in my other picture Buc but I glued a piece of rubber to the back of the plates and it does help the seal. If someone wanted to use an original plate instead of making one this would also block all the holes off.

I like your idea of blocking off the rear water intake from the inside to help direct the flow up.

[Author]

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