Tuesdak
TDR MEMBER
In searching for way to improve my AC for the 121 degree summers we get I wanted to share my results of using a Thermal Dispersant on a new condenser. This technology, now banned by NASCAR, is now affordable. The Thermal Dispersant coating is more efficient by 33% than a layer of aluminum oxide (unpainted) or insulating layer of black paint.
My results are not as clear as they could be because the new condenser itself is a more efficient OEM design than the original OEM/Factory one I removed.
Megacab owners may benefit from also coating the evaporator. "High Idle" would also help, but, my 2003 truck doesn't support due to old style cruise control, ECM being the year of in-house non-Cummins code, and aftermarket kit needing the TPS on the engine... A brick will help AC performance getting off idle.
Your mileage will vary as Refrigerant used is 2LB equivalent of Envirosafe Industrial.
Before Results: (past the critical 105 outside temp) at 106 degrees F:
AC High side pressure runs away to over 400 psig with blower on high at idle. (Compressor max pressure short term peak spec is 430 psig. Long term best life under 300 psig. System vents over 450 psig.)
Blower speed 3 will creep up to 400 psig from 350 psig at idle. Note the AC high side pressure in the lower right corner of the display.
Blower speed 3:
My results are not as clear as they could be because the new condenser itself is a more efficient OEM design than the original OEM/Factory one I removed.
Megacab owners may benefit from also coating the evaporator. "High Idle" would also help, but, my 2003 truck doesn't support due to old style cruise control, ECM being the year of in-house non-Cummins code, and aftermarket kit needing the TPS on the engine... A brick will help AC performance getting off idle.
Your mileage will vary as Refrigerant used is 2LB equivalent of Envirosafe Industrial.
Before Results: (past the critical 105 outside temp) at 106 degrees F:
AC High side pressure runs away to over 400 psig with blower on high at idle. (Compressor max pressure short term peak spec is 430 psig. Long term best life under 300 psig. System vents over 450 psig.)
Blower speed 3 will creep up to 400 psig from 350 psig at idle. Note the AC high side pressure in the lower right corner of the display.
Blower speed 3:
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