Getting the heat out Last Update: June 7, 2009 0:13 AM

For cooling, I again used PRC Inc to fabricate a custom radiator that very nearly bolts right up. I moved the stock lower radiator mount forward one bolt hole to allow a little more clearance to the engine. Also, I flipped over the AC condenser tabs so it too get moved forward about 1.5 inches.

miata ac condenser

prc miata v8 radiator

prc miata v8 radiator

prc miata v8 radiator

prc miata v8 radiator

Next, I had a custom fitting made to go inline of the heater hose line to act as the fill point, pressure relief and have ports to vent the steam line from the heads and connect to the overflow tank.

prc miata v8 radiator

prc miata v8 radiator

Good news about the Miata coolant temp sensor is that it is nearly exactly the same as the GM one! Same threads, same length, etc. The GM engines have their sensor on the front of the driver side head but there is an extra port on the rear of the passenger head that is plugged from the factory. Simply remove the plug and screw in the Miata sensor and run wire back to your stock miata gauge.

miata vs ls6 coolant temp sensor

The plug is the allen head bolt between the header and the ground strap.

ls6 coolant temp sensor plug

v8 miata custom cooling radiator hose

ls6 v8 miata


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