Miata leaks, need help.

[gater]

I need help. Long story. My girlfirend blew a heater hose on her 94 miata m-ed. It overheated and took out the head gasket. It also took out the radiator (overpressure) once the head gasket went. I replaced everything: radiator, head gasket, intake and exhaust gaskets. I also did a full valve job and had the head planed. The car runs beautiful, but I have a coolant leak somewhere on the back of the engine. I thought it was the heater core so I isolated it. It still leaks. It seems to be running down the firewall just behind the engine. It drips down onto the front frame and runs out all over. I am nearly positive that it isn;t coming out of the engine block, it stays dry. I have no indication that my head job is bad. No water in oil, no water in exhaust. WHERE IS THE COOLANT LEAKING?!! Help me out any Miata geniuses!

 

[macklum]

check the metal lines attached to the block .

 

[norman]

A couple of things to look for. When you isolated the heater core, did you just uncap it and take the heater hose and loop it back into the block? If you left the heater core open, it is possible for some coolant to still leak out while driving unless the openings are capped too. If the pressure blew the radiator, it possibly blew the heater core also and that may be residual antifreeze draining from the insulation around the core. Also are there any freeze plugs on that side of the block, perhaps one of them are leaking. That is the only thing I can think of as to where antifreeze could be leaking from.