Compression adapter

[The Boat House]

quote chuck86:

WTB has had no response to a compression adapter for my old motors that take a 7/8 x 18mm. This is a large spark plug hole.

How do you check the compression on these motors?

chuck86
PA
doggone@velocity.net

I sent you an email on the 16th
to the email in your ad.
Did it end up in your junk mail?

[Mumbles]

quote BillW:

“If it’s on your mind, it’s on eBay.”

https://www.ebay.com/itm/New-18mm-Compr … SwMmBVuozg

The only problem with this adapter is it’s for a tapered seat plug opening. If necessary, it could always be adapted to a flat seat opening.

https://www.grainger.com/product/WESTWA … ter-45T010

[Mumbles]

quote Buccaneer:

What model Logan do you have?
Mine is a 1947 model 820 with the turret tail stock….

No Logan here. Just a bilingual offshore 12 X 36 model which speaks both metric and SAE.

---

Attachments:

[RICHARD A. WHITE]

Ok, this is goofy, I typed that I had a Logan , but somehow it was placed on Bucanneers post????

http://www.richardsoutboardtools.com
classicomctools@gmail.com

[Buccaneer]

Richard, My Logan is 1950’s, model 1925, powermatic type, with
normal tail stock.

Prepare to be boarded!

[garry-in-michigan]

It worked for me . . . 🙄

[amuller]

Brillman has adaptors. https://brillman.com/product/spark-plug … 8-to-14mm/

Not sure if Champion still carries them.

7/8" plugs are readily available and cheaper than adapters. The last small equipment to use them, that I know of, was the Gravely Convertible 2-wheel tractor, up into the 60s. An old-timey Gravely dealer will know about this stuff.

[Author]

Posts