The joy of used parts. You stare intently at pics online, or on ebay, read and re-read the seller's descriptions until you have them memorized, and then, hoping for the best, pull the trigger and an electronic financial transaction takes place. You wait a few weeks, pick up your wares, and hope for the best.
I've done OK in the past with used engines. Although this has turned out to be dud #2 (the first being a KTM 450 engine for another supermono project years ago). My plan was always to rebuild this engine, as while it was complete and advertised as a runner, mounting up the engine as a empty case in the frame is a lot easier weight-wise. And I wanted to inspect the lump in detail anyway. TT/XT 600 engines are pretty simple to take apart, with the only issue being a universally stubborn rotor removal. I set about the dissasembly, going as far as getting the rotor nut off (with heat and an impact gun), and then flipped the engine over to remove the clutch side components.
Here is where I saw the first problem. The main gear running off the transmission is missing 2 teeth, with a third damaged. Where did the broken pieces end up? Oh well, I was stripping the engine down to its cases anyway, so no big deal, right?
Here is problem #2. The case is cracked. You can see the crack in the cover face, as well as one extending down into the bearing pocket. There is also evidence of the outside of this part of the case being painted over, to hide all of this.
With my OCD tendencies when it comes to engines, this is now for parts only. I've opened c claim to get back some of what I paid for (admittedly cheap, but still). The search is on for another engine in the mean time.
This pic shows some good things. The 900ss shock is in great shape, and with some spacers will mount onto my collected shock mounts. The axle adjuster on the right was advertised at 20mm, but it is not -- likely 17mm. Another job for the friendly machinist.
A real shot in the dark was the tail pod. When the subframe is done (after the tank arrives and is fitted) the end result would have meant a subframe that no readily available seat would easily bolt to. Again some gazing at ebay pics found a zx10R solo seat cowl might work. I found the cheapest available on ebay and bought it. Turns out it should work OK. The metal latches can all be easily removed and replaced with brackets or fittings tailored to my needs. I will have to fabricate my own seat pan and foam, but I've done it once before and learned from that experience. I think I can come up with something again.
The holes may well be filled, and the metal cross brace will definitely be removed as a part of the subframe fab process.
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