I have 2x kt100 engines but no idea what was done internally when they were built, one says comet the other says buller,one has a wet hortsman hxl clutch and the other is a tomar 6 spring, i have the starter and motor mounts/exhaust pipes and everything needed included as well as the starter.
boosted,
It is quite literally impossible to know the value without pulling down the engines.
Example: I was helping someone that wanted to put together a Yamaha setup for sprint racing. He had been collecting engines -- buying off ebay, or friends that were getting out, etc. He sent me 4 engines that he had acquired, all at good prices. I pulled everything down (all the way to splitting the cranks). Bottom line... all 4 engines were near max bore size, 3 of the 4 crankshafts were unusable (totally worn out). All the rods were worn out. Most of the engines had machine work done that was marginal at best. Only one coil was usable. TCI missing on 2 engines, and the other two had broken ears. 3 of the 4 engines had carbs, but 2 of the 3 carbs were garbage. With a *LOT* of work, and a couple hundred bucks in parts, I was able to build one good, fast engine, though the crank will need to be replaced soon, and the cylinder only has a couple of bore sizes left.
Granted, I am illustrating a bad scenario, and also speaking from the engine builder side, not the engine *seller* side.
In hindsight, the person I was helping would have saved money, and been much better off just getting their hands on a single new or near new Yamaha and letting me build the one engine (would have saved me significant work as well, haha!).
Bottom line: if you are selling... the more info you can provide, the better. If you are buying... pull the engine down most of the way and measure everything before laying down the cash.
PM
