Its been a while since a proper update (despite some massive threads

), so here goes...
Since the Update 14 thread, its had the engine swapped. Twice. The donor engine ran fine for a few hours, but that was it. So the original engine went back in a few weeks ago. I had to stop using it, as the overpressuring damaged the top hose.
With some assistance, the head was swapped over the weekend, and this appears to have cured the overpressurising

- I used for work today, no coolant loss.
Its been a hell of a saga, but it seems we (the forum) have cracked it at last

So I must say a sincere thank you to Jay_W, LFF64, Tunnie, Kevin Wood, Bo Bo, Sassanch, M_DTM, and in particular Omegatoy for your help in getting this far. Also, thanks to everyone who has contributed in the forums

There are still a few issues to solve - now it runs too cold, so probably knackered stat. Need to check waterpump. The cap is knackered (all 5

).
But these are minor niggles. I am wary of stating its completely resolved - as I thought it was a couple of months ago only to have my hopes dashed - but I am quietly confident

. Confident enough, I've just sent Mrs TheBoy down the chippy in it

This project has been a forum saga, and I know many of you have probably felt involved in the twists and turns, so I would say another massive result for OOF
Edit: I forgot the first gearbox change, so thanks also to Laidback and JamesV6CDX 