Crank bearings seem good but they have never been replaced so it would be high advisable to be replaced since the engine is very old. Connecting rod turns smooth and had no weird sounds or freeplay. Transmission and everything else on the motor was ok but oil seals should be changed as well. In general the engine needs a complete service to give its 100% but it is a motor that could run if you only change the piston rings. The stator cover is broken and the intake rubber has crackes.
Please have in mind that this motor is more than 35years old so do not expect it to be like new. The engine will be delivered in TWO boxes(top end/low end) because of weight limitations. Many parts for this bike available. The item "SUZUKI TS250 1981 COMPLETE ENGINE-MOTOR-LOW COMPRESSION" is in sale since Wednesday, November 01, 2017.This item is in the category "Vehicle Parts & Accessories\Motorcycle Parts\Engines & Engine Parts\Complete Engines". The seller is "annaparts" and is located in FLORINA. This item can be shipped worldwide.