QD-16 Cylinder Head Core Plug

[Bob Wight]

While testing the water pump on my QD-16 resto project, I find the lower core plug on the cylinder head is leaking (see pic).    My parts list shows a part #19-51 but I can’t locate a replacement using that number and I find no superseding number.  The plug is approximately 5/8″ diameter.   Anybody have a current part number?    Also, what is the best way to remove the old plug?

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."

[ede]

Current p/n is 306392  Have some on hand  Ed Elliott  eddelliott@cox.net

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Tubs

[BRENT BERGEN]

Some of the powerhead welch plugs are the same as ones that come with the OMC carburetor kits. To remove the old one, punch or drill a hole in the center and pry out with a small screwdriver.

Improvise-Adapt-Overcome

[Bob Wight]

I had the same thought about the carb kit plugs.  I’ve saved all of the extra pieces out of my carb rebuild kits over the years and none of the plugs are the right size for this one I need to replace.    Ed Elliott has a couple of replacement plugs headed my way.

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."

[Author]

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