This page says TD-20’s were built between 1946 to 49.
http://www.marineengine.com/parts/engine-model-guides/omc-johnson-evinrude-model-number-guide/omc-johnson-evinrude-model-number-guide-00045.html
They will run at 60 to 65 psi compression, but my best
“idler” has 70 psi on both cylinders.
A ton of them made, so not worth a whole lot.
I gave a least 10 parts TD’s away the last couple of years
just to make room for other motors, lol.
Prepare to be boarded!
