Early Johnson Mystery

[JOSEPH BRINCAT]

Like Tubs said .. if it’s #14-24 don’t loose it.  When the subject of the old obsolete ASME/ American Standard thread sizes come up , I feel compelled to post the old size chart in the public interest.  Please note the clone size proximity of several number sizes to our now common 1/4 ”

Joe B

[PM T2]

FWIW, there is an industrial tool supplier in Michigan that carries hundreds of threading tools that can produce about any thread you can think of, including these oddball #14-24 TPI drain plugs. Its the same place as I bought the 10-30 tap and die for making the Johnson rope sheave plate screws that get the slots mucked up (or lost by somebody else, but not you) so often. As soon as I can find the last receipt from them, I’ll tell you the name of the company.

PM T2

He's livin' in his own private Idaho..... I hope to go out quietly in my sleep, like my grand-dad did..... and not screaming, like the passengers in his car...

[Tubs]

These are also an obsolete thread. I believe I have them underlined on Joe’s chart.

A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.

[davidk]

Any idea what thread this one is? Pretty buggered up but I’m able to drive it out and back in.

[Tubs]

Pretty sure its 1/8-27 NPT Pipe. A hardware or home improvement store should have them. Cut the head off and slot it. If it doesn’t stop and goes all the way in,the plugs in the past have been over tightened and enlarged the hole.

Example

https://www.schedule73parts.us/products/bla17233?variant=43838806425792&country=US&currency=USD&utm_medium=product_sync&utm_source=google&utm_content=sag_organic&utm_campaign=sag_organic&srsltid=AU7gw4Xe0rvLSJDJXd2ej3BDW7RrDB_nBg8ZpK2bwqqwOHne_1_oAu5s5ZM&com_cvv=8fb3d522dc163aeadb66e08cd7450cbbdddc64c6cf2e8891f6d48747c6d56d2c

A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.

[davidk]

Wow, thanks Tubs!  I probably should find a bronze plug for this bronze lower unit.

 

[Tubs]

Brass ones are available but be sure to check to see that its solid. Cut the top from a hollow one and your going to have a fairly good leak.

A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.

1 user thanked author for this post.

davidk

[David Bartlett]

Just to reiterate, both David K and I are looking for a starboard side cylinder for an early A model Johnson. I would also consider a complete powerhead.

thanks.

David Bartlett
Pine Tree Boating Club Chapter

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

[davidk]

David Bartlett wrote:

Just to reiterate, both David K and I are looking for a starboard side cylinder for an early A model Johnson. I would also consider a complete powerhead.

thanks.

I plan to run mine as a single until I find that starboard cylinder.  Might cause the boat to pull to the right?

1 user thanked author for this post.

David Bartlett

[Tubs]

It won’t be the first time. This was offered for sale on eBay over 30 years ago, when there was only the Green Board. I wish the pictures were better to get a better understand of what was going on here but eBay pictures weren’t the quality or the size they are today. I saved it because I found it interesting, showed some imagination, and its the kind of thing I would do. (boathouse repair) Someone on the board called it a “Twingle!” When I posted it the first time one reply was, “What did you post the piece of junk for?” I guess it isn’t for everybody.

A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.

1 user thanked author for this post.

David Bartlett

[Author]

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