I am so annoyed with myself.
I have decided, and I have wanted to do this for a while now, to go through the mandarins original engine and make it leak free, fix the head gasket, replace any other things that need doing, i.e. Mainly seals, soft pipes, and bung it back in the car and enjoy its quicker turn of speed.
This decision has been made because one, I want it as trouble free for the future as possible, because I might not be in the position to do major fixings at somepoint. Two because the ticking head on the car at the moment is not getting better and I unfortunately suspect an external headgasket leak too. Something I did not suspect when the engines were swapped over back in 2015.
Coolant seems to be disappearing slowly and not ending up on the road below or any other leaks found. But it's always ran at the right temp and never got hot and bothered. I did think maybe the head bolts might need retorquing, but if the head needs work anyway, then might as well take it off and do it properly and make sure the gasket, headbolts ARE new.
Basically I have had enough and want an engine that is working properly!
So the idea WAS to prep the mandarins original engine over the summer and then do a swap over meaning the car will be off the road for the smallest amount of time possible.
But that has now been thwarted! I didn't bung any oil back into the mandarins original engine and turned it over regularly when I took it out and it's gone and bloody siezed.

I'm so cross. ARGH! It will not budge on the crank pulley at all, even with a breaker bar. Unless it can be miraculously unseized I think it's fit for parts or obviously a proper engine rebuild.
So I'm trying to formulate a plan B.....
And I think it's coming down to just taking out the cars engine and repairing that. Maybe though a plan is to fix up a new head so replacement is quicker.....
Hate it when best laid plans fail at the first hurdle!