Reply to "Running Hot With Smaller WP Pulley?"

The idea that the coolant flow rate of the Pantera's cooling system is too slow (especially at low rpm) is not new. John Taphorn has been advancing this for at least a decade. I've seen very old articles in Pantera International News also advancing this idea. I've held this opinion since long before I purchased mine.

Odoardo Govoni raced a group 4 Pantera (chassis 2873) for 11 seasons (1974 to 1984). He won 3 Italian championships and one European championship. He claimed Bertocchi made one improvement to his group 4 Pantera's cooling system, i.e. installation of a smaller water pump pulley. This is where Scott and I got the idea for this mod. That pulley is a mod that the Pantera has needed for 40 years, and I applaud Scott for bringing it to market. I am not exaggerating when I say every Pantera needs this pulley.

If you own the De Tomaso Racing Book by Olczyk you can find a short 2004 interview with Govoni on page 102 where the pulley is mentioned.

Air collecting in the radiator is another problem, the only way to resolve this is to install a header tank and plumb an "air-bleed" from the radiator to the header tank.