I just got my new(ish) engine running(fresh bottom end i rebuilt the whole top end) with an electric water pump. the engine overheats real fast and at ~230* on the guage i got a geyser about 1.5-2 feet out of the radiator.

is this definately a blown head gasket? and is a leakdown test the only way to know?

 

sounds like your thermostat is not opening

 

on t-stat #2 right now...opens at 180* in a pot of water

 

is the WP installed in the housing correctly? i have heard of the propellers being installed backwards reversing the flow.

 

propellers dont get installed backwards the wiring gets mixed up...my wiring is all good...triple checked it

 

im sure youve probably checked all the obvious stuff just suggestionsim sure youre right about the wires but i have read on here that someone suggested what i said. maybe they were as new to the EWP as i am. this only happens when the temp gets to 230 and not all the time?

 

correct

 

disconnect the coil and do a commpression test

 

drained the oil...its got coolant in it...now what?

 

You get to pull the head(s).

Give us some details of your build - maybe we can figure out what went wrong and save you a headache next time around.