Ford replaced the original five tube and flat tube designs with a 2" deep three tube core. Tubes were offset to allow better tube access to air flow. While Ford engineers claimed an improvement, many surmise that decision was based on cost containment.
There were complaints from branches, dealers and customers of overheating and there was a corresponding increase in the number of accessory water pumps sold to combat the overheating. Additionally, the three row core was lighter, and lacked the structural crossbar running through the core. Added stresses on the radiator resulted in tubes separating from headers.
In February Ford engineers responded to the consumer complaints with a 1” longer fan hub (part no 3962C) and a change in the fan blade’s pitch. This brought the fan closer to the radiator. By November of 1926 the three row core T-8736-G and flat tube type T-8736-F were obsolete and they switched to a four tube core design T-8736-H.
This experimental design did not work very well in 1926 and with the way cars are driven today, it likely won’t work as well either. The Brassworks can still manufacture a thinner core radiator with or without the bar should a customer want one. If you find yourself with a core depth or fan/core interference a simple solution is to purchase the standard length fan hub (part no 3962BBN) which is now made with sealed ball bearings.
Features of the 1924-1927 Model T Hi Style Radiator include:
Tellurium copper fin core with 6 fins per inch
3 Rows of round tubes are drawn copper and conduct heat faster than seamed brass original design
Die stamped three piece brass top tanks with model correct die stampings
Drawn brass bottom tanks with relief for crank
Galvanized steel sidewalls to resist rust
Brass overflow tube formed with same radius as stock
Cast red brass rod support
Internal baffle in top tank to prevent cooling loss
Properly offset cast red brass inlet
Polished nickel plated filler neck (Unfortunately we cannot guarantee the fitment of 100 year old caps. Aftermarket caps are test fit and available for ~$20.)
Upper shell mount brackets included with radiator
Painted flat black to aid in heat exchange
Made in the USA
Learn more about The Ford Cooling System