Bollocks, new rebuild over heated cos of T stat
 

Ok I was running my engine in last night and the water temp shot up to 120deg C.

I managed to get home as I was a mile away and as I got home the radiator hose blew off.

So left it to cool down and had a look at it this afternoon. There is a patch of oil on the floor and I took the inlet off and there is water and oil mix in the rear secondary runner.

So looks like the seals have cooked and failed. B*stard.

I guess the water O rings on the housings have gone and the oil control rings on the rotors, also the T stat is bugger aswell. I started the car today and the water temp is 98deg C but the radiator is freezing cold to touch, block is hot.

What else could have failed as I'll have to order the parts and get it fixed asap.

I have searched but I just got normal overheating problems.

Did a seal get pinched when you put it back together? You'll know when you tear it down.

It takes a while for an engine to hit those temps, even with a bad t-stat. I recommend getting gauges with a warning light function....

Are you saying that you didn't replace the t-stat when you dropped the new motor in?

All the seals where fine, i didn't replace the t-stat as it worked spot on before.