Unimog Club UK

Hello Robin and welcome,
When you say seized did it seize while running or when it was stood for a long period if it's the later there's loads of info about freeing rusted engines on the net, I remember years ago buying an engine from a scrap yard that was seized and the old lad telling me it would be a good engine because it was seized in other words it was a tight engine. I think I did the usual for that engine pour WD 40 or similar in the cylinders after removing all the spark plugs put a socket on the crank bolt with a long lever and weight and leave for a few days keep topping up the wd40 don't be tempted to rag the engine back and forth as this will break the rings.
Just thinking about it after many years I wonder if you could use muratic acid down the cylinders ? I've used this for rust removal but not to free a seized engine ! Google muratic acid.
If its completely ca put fit an130 engine lovely engine but rare will make a big difference.
Moose