I'm investigating replacement engines for my 1.4SR nova. I'm told that putting in a 20SEH then whacking on a 1.8 head will give me a good power increase. However, after doing some research some people reckon it's not a direct replacement, and that I'd require the 1.8 inlet/exhaust manifolds, etc., TPS, ECU, etc...
In that case, perhaps I'd be better sourcing a 1.8 engine and ancilleries and bolting a SEH bottom end on it.
anyone got a definitive answer?!?