Hi Noob,
There are 2 kinds of 2C engines, Japan and Korea. The Japan 2C has better metallurgy and is a good solid engine. The most probably reason why your 2C engine was rejected at the machine shop is because it already has a crack in the engine block. Someone must have overheated it badly before. You can get a surplus engine in Banaue but you need to have a good mechanic to look at it to make sure that the compression is still good. Most likely you will have to calibrate the injection pump also, plus minor repairs. You will most likely spend 50 to 60K to replace the engine with a relatively fresh surplus engine, calibration, minor repairs and installation, but keeping the existing transmission. If you are interested, give me a call 502 9683. Chips G.