Yeah, it's interesting how the human mind works David, I brought home a CX500 years ago that was a good runner (but rough cosmetically) and I've let it rot under a tarp for the last 10 years or so, with no guilt. Well, maybe just a little, but I wouldn't put a CX500 resto ahead of this little smoker. Funny, eh?
Anyway, moving right along, I was still hoping to somehow save this project, as bad as it seemed. I couldn't move the pistons at all, so after some discussion with my mate Fred (5 years my senior, not to mention he's a formally trained tool maker, so knows his sh1t) I drilled through the crowns of the pistons so that I could release the cylinder blocks from the cases, and hopefully the crank and lower cases could be saved. I found a nice sharp drill bit and went to town.
Turd 350 9 Feb 2021 7 by
Terry Prendergast, on Flickr
I then drilled/smashed the top and sides off the piston, and got the cylinder off. Sadly, I couldn't budge the other one. On a two stroke, as you all probably know, the inlet and exhaust ports are cast/machined into the cylinders, not the heads, and the 48(?) years that this wreck had been laying in a field (or a swamp, river, drain, whatever) the pistons had "grown" into the ports, and weren't coming out, no matter what. OK, time to give up? Nope, "not this little black duck" as Daffy would say before the WOKE police decided that's probably racist, and offensive. I tipped the engine upside down and unbolted all the case bolts, and split the cases.
Turd 350 9 Feb 2021 6 by
Terry Prendergast, on Flickr
Turd 350 9 Feb 2021 4 by
Terry Prendergast, on Flickr
Turd 350 9 Feb 2021 3 by
Terry Prendergast, on Flickr
Turd 350 9 Feb 2021 5 by
Terry Prendergast, on Flickr
There wasn't a drop of oil in the gearbox, so the gears were almost as rusted up as the crank etc. It was safe to say, that the engine, along with the wheels, forks, shocks, fenders, pipes, electrics, carbs etc, were scrap. Time to give up now? Well Dion and I had kept in contact, and after a couple of false leads, he found a seller in the US that had a good complete bottom end, so he paid for the engine's bottom end, and I paid for the shipping. I'd found a seller in Oz who'd sold me a set of good 250 cylinders, I bought new 250 pistons, but when I looked at the carb mounts and much smaller ports on the 250, and checked it's specs, decided I wanted to keep it as a 350.
I did better with other parts. I found a minty front wheel here, with the original 1969 tyre, that actually still holds air, not that I'd be game to ride it too far on 52 year old rubber. Another seller had a minty rear wheel with a brand new Metzler(?) tyre on it, so was worth the silly money I paid for it. I bought a nice original exhaust from another seller in the US that was advertised on Ebay as being for a T350, but it wasn't so that was a waste of the better part of a grand, with shipping........
Keith Davis in Ohio really came to the party for me. He found another 1969 T350 with a stuck engine, and sold me the complete top end, carbs, pipes, fenders, handlebars, forks, switches, wiring loom, etc. Needless to say it cost a bomb, especially as it was Fedexed from Ohio to Florida, then Florida to me, but the parts were in exceptional condition.
T350 parts and CB750 cams 11 May 2021 by
Terry Prendergast, on Flickr
T350 parts and CB750 cams 11 May 2021 3 by
Terry Prendergast, on Flickr
T350 parts and CB750 cams 11 May 2021 5 by
Terry Prendergast, on Flickr
T350 parts and CB750 cams 11 May 2021 6 by
Terry Prendergast, on Flickr
T350 parts and CB750 cams 11 May 2021 8 by
Terry Prendergast, on Flickr
I'd assumed that one cylinder was damaged, so bought a set of OEM 2nd oversize pistons, but when the parts arrived, the cylinders were both fine, so I hunted around, and found that my Japanese mate at Cruisinimage in Japan was selling standard piston kits, plus new needle roller bearings for the wrist pins, for around $100 USD, plus another 20 or 30 for shipping. I bought them too.
It was time to get the rusty, but solid frame, swingarm and centre stand blasted. Luckily for me I got it back on a nice dry day, so hit it with the old standby, Rustoleum gloss black. Looks good.
T350 quick paint job 12 May 2021 4 by
Terry Prendergast, on Flickr
Time to start putting the engine together. More tomorrow.