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First I’d like to say, thank you for the add on this site! I have been around boats since I was a baby. I just recently got into antique motors, when I started stumbling across them for sale on Facebook. The wife is less than thrilled about this new found affinity for “ junk “ as she refers to them. My first score was a evinrude speeditwin model from the 40’s . I have torn the motor down, cleaned everything up, and it runs . Now onto the problem. I have the lower unit all torn apart to check the fears, and clean up what I’m assuming used to be gear grease. It’s more like tar now! My question is , on the front of the lower unit is a machined in hole. I have seen other motors with the different lower unit, they have a cone on them. Does anyone know what goes in there? I’d love to take my little guy for a ride before cold weather gets here!
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Welcome.
I know what you are up against with your wife but that is off topic.
There is a “plug” that goes in that hole. I had a SpeediTwin that was missing one also and made one from some aluminum round stock. Had to file it down to fit tight then hammer it in and cut off the excess. I got the round stock from McMaster Carr I believe.
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These are the two deals that came out of it. At work we use rubber sheet to make gaskets for odd sized flanges, I’m wondering if I can make a couple out of that.
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Some of those lower units have the plug held in place by a 1/4-20 NC screw that threads into the backside of the cone from the inside of the lower unit.
As such, I’m not sure that the plug in the front of that foot is a simple press fit or not.
I’m not sure if the heavy foot with the wings on it is built that way, but you may want to look into that. I’m more familiar with the early 1930’s Speeditwin lower unit than anything else. Hope I don’t cause any confoosion.
Best,
PM T2
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