stuck engine

The old one can be rebuilt but at a cost, im sure you can find another remanufactured engine at a lower cost rather then purchasing new one.

Did your engine over heat? If not you might be able to unstuck that engine, remove spark plugs pour transmission fluid in each plug, let sit about a day, then take a socket and attempt to turn your lower crank shaft bolt

The engine did not overheat. Will spraying WD40 will also work ?Also how much transmission fluid will I put in terms of measuring cups(1/4, 1/3, 1/2 1 cup)if in case it got unstuck, will the engine run again? and what will happen with the transmission fluid ? dry up or burn when the engine starts again? Thank you so much for your very kind Help and assistance. Elido

If I was you I would fill it either with transmission fluid or wd40.... email me northernflavor@aol.com

I purchased a 1971 Sel Mercedes Benz about a week ago, the person that was selling it, informed me that the engine was seized from sitting 21 years, she also made mention that several mechanics attempt to free it, but was unable..... patience is the key... I let the WD40 and transmission fluid do its business in the spark plug cylinders, just yesterday it free up, now I'm on my way to start on the next stage of restoring it

Just drain the oil and new oil filter, drive the vehicle as if it's new for about 100 miles before getting down on it hard

If I assume your "stuck" engine is SEIZED(correct term for what you described)....I would be inclined to do the following. Disconnect the belt driving the alternator. Remove all spark plugs. Attempted to turn the engine over with a long wrench attached to the crankshaft pulley. I have seen seized engines with bad seized alternator bearing rebuilt...only to have the same "seized" condition when the drive belt is installed. I have also seen engines hydrostatically locked.