Recheck all the lines like the others have said. Remove the throttle body and shine a torch down the inlet manifold, it will be obvious if coolant has washed through it as the manifolds are normally black inside from oily build up. In your case you would expect a clean mark around the cylinder closest to the throttle body.

The S2000 has loads of coolant lines for the IACV, Throttle body so it would be easy to mix something up. I would be tempted to rip off all the coolant lines you have connected around that area and start it up again and see if the water stops. Only let it run for a little while thou!

Its not the end of the world mate, i done something similar with my old rover where i replaced the engine but got the vacuum lines mixed up. I had oil being pulled out of the cylinder head via vacuum when it should of gone to the hose before the throttle body. It was smoking like a blown engine until i realised what had happened. Hopefully this will be an easy fix.

 

They only had the one engine in stock, advert is now removed..company called Charles Trent

 

I'm in East London E16 1EE, Canning Town, opposite the Canning Town Station, It would be a great help if could pop down and have look

 

Best thing is to get another kind and local s2ki member to turn up in their S2 to see what goes where.

Hoping you can just swap pipes over and that's that.

 

Drop me a text, I might be able to come around

07944945944

 

I cant believe you let the engine run for so long

 

How's niagra doing?

 

Yes, any updates ?

 

Sorry I haven't been around yet, I'm making time to be there today

Joe

 

Charlie Trent's is in Poole, Dorset. They have been around for as long as I can remember.
They are just a breaker, not a specialist in anything in particular.

I have bought a few bits from them over the years. Nothing on the scale of a whole engine though. They seem to be pretty reputable.