Quote:
Originally Posted by dredgeguy
Marc has some data from mine when he put in the new DeWitt fan assembly, the 200 amp alternator and LED brake lights. Following is what he sent me:
Engine cooling and AC performance was improved in four ways.
1) A DeWitts/Spal cooling fan assembly was installed. The fan assembly draws air over 100% of the radiator rather than 92% with the OE fan assembly. The Spal fan assembly weights five pounds less than the OE fan assembly.
2) The alternator was upgraded from OE 124 amps to PowerMaster 200 amps to increase the system voltage. This runs the coolant and AC fans faster.
3) The power output cable from the alternator was doubled in current capacity to reduce voltage drop. The power cable for the AC blower was doubled in current capacity.
4) The brake light current was reduced from 11.2 amps to 1.5 amps to increase the system voltage .2 volt with the brakes applied.
I can tell you that having the extra power to the AC blower makes a world of difference. You can feel the extra air flow. Marc tested the air flow before and after and said the air flow at the center vent has improved from 10 mph to 14 mph. This is an increase of 30%. Still have to evaluate this summer but I believe this is the solution to our marginal cooling capabilities, and sure I will be very comfortable this summer with the AC on.
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Thanks Charlie!
This is some cool stuff - pun intended.