Reply To: Johnson KA-37 Piston Rings Part Number?

[Buccaneer]

Boonie wrote:

Hey Buccaneer. Did you ever find rings for your KA 37?  Any info would be helpful. Looking for a connecting rod as well.

Here’s my notes from the KA-37 regarding the piston rings…..
———–

9.3 HP
2-1/8″ bore x 1-31/32″ stroke
13 pint gas tank capacity
Champion R-7 spark plug
Weight, 64#

Compression (with fogging oil)
85 psi in both cylinders…
but I found the bottom piston had
one ring missing.
Rings are 2-1/8″ x 1/8″
1-26-24, I ordered 4 Maytag rings
of that size.
Note: Maytag rings were about .013 deeper,
so I relieved the inside of the rings a
few thousands with a Dremel & stone.

Note: Replaced the four Maytag rings with Scott 3.6 hp
rings. Compression after 15 second run, T-95, B- 98 psi.

Prepare to be boarded!