It's raining today so that means my 1954 built garage is doing annoying things like flooding. I still found a bit of time to start tearing down the 340. At the moment I've gotten the cover off over the head and jugs and taken off the head to take a peak into the cylinder jugs. I also took pictures of all this for documentation and have them included. While things aren't cranked down nearly as hard as the engine was to its mounting plate, for a rather sick person it was still somewhat tiring. I also managed to get this far without snapping any bolts or studs thus far. Something I largely credit to the large amounts of oil lubing everything.
As can be seen, we have a Walbro WD-36 diaphragm carb, which would be the correct carb for the engine. Although according to documentation it could have also come with a Tillotson. Either way, the carb is going to get a rebuild and the kits for it are ~$10. I noticed nothing in the high adjustment slot but the pictures I've managed to find of a WD-36 also show there being nothing in that spot. Further research will have to be done on this carb to fully understand how adjustments are done.
Getting to the coils shows that they are both in very good condition and aside from avoiding the oil caking the rest of the engine they have also largely avoided corrosion and rust. They'll be reused in the rebuild since they are fine as they are and are in working order. I snapped a couple pics to keep record of the wiring order.
Last that I got is the head and what's hiding underneath. I pulled most of the added natural insulation out that I could get my grubby fingers on. Not terribly surprising considering the trike had been primarily used around a farm for its entire life and probably never even saw a dirt road. Cracking the head open to see into the jugs shows a pair of really nice cylinders and hemispherical pistons. There's a touch of rust on one of them but that isn't terribly surprising considering it's been sitting for a couple decades. However, what is very noticeable is that gas and oil were getting past the gaskets and I got a lot of work ahead of me cleaning this up. The cylinders themselves look like they are in great shape for their age and how much the engine was run. No crosshatch, but neither is there any obvious scoring that can even be seen with ye olden eyeballs.
Moving forward, I'm going to have to do a bit of work to get that side cover piece off that holds the fan. I'm not sure if it shows in any of the pictures but the engine recoil start is MIA and the engine was modified to use an electric kart starter to fire it up by welding a plate on. I'm going to have to get the plate welds ground off to get that side taken apart. I also have to get into taking off the driver for the torque converter in a way that doesn't harm the plate that locks the nut from rotating. I don't particularly want to hunt down a locking plate for a Salsbury 700 series torque converter, I can't imagine there's very many floating around anymore.
Anyway, that does it for me for today with this engine. I'm going to do some research on pulling the jugs. I'm pretty sure I see how to do it but it's better to be armed going into a fight than come out breaking something irreversibly.
