Check out how the Cooling Head (Heat Sink) is Oriented. You want to be able to see the Glow Plug through the side of the Cooling Fins it the direction, (Front to Rear) that allows the most efficient airflow through the Cooling Head. Most current Race Cars run a "Transverse" Engine installation, the NTC3 is an "Inline" or 90* installation. Your TR maybe already configured correctly for your application, but OS engines, (and other MFG's) usually require the Cooling Head to be rotataed for Max Cooling in the Transverse applications. Anyways, check it out, it's worth a shot. Hope this makes sense.
