If I replace the 200Amp alternator on my 08' CVPI with a 135Amp, would it cause less drag?
Are there any problems associated with doing this ? (no police lighting on car)
If there is less drag on the engine, is it worth the savings in cost ? (they are substantial)
I checked, and there are units that put out 135A and are meant to fit my car. I just don't think I would need a 200A alternator for civil use.
Unless you are trying to push a big amp for your stereo system or multiple amps, you can go back to a 135 amp alternator. The 200 amp alternator was installed for the lighting system.
No, it will not make a difference in the drag on the engine. Nor in fuel mileage.
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It's just a SUPER-DUTY Mustang GT Sedan
1997 Crown Victoria P71 SVT *** ex-US Marshall service (the CAR)
STOCK?? I bet it was modified.
13.26 @ 107.24 MPH 1/4 mi w/me, tools, & full tank
I added CAI, NICHE 19 X 8.5 " wheels with 245/45ZR 19 rubbers, and completely rebuilt the front end with poly bushings
I don't want to "split hairs" here but I did some research, and found a formula that people might find helpful. Granted, the differences in HP are Very small, for those who want to squeeze every single HP down to the rear wheels, here is the guideline.
Amps x Volts= Watts
Watts / 745.7 (or 1HP) = Electrical HP Produced by Alternator
HP x 15% Efficiency Loss = HP Loss
HP + HP Loss = Total HP Used
EXAMPLE
200A x 12V =2400 Watts
2400W / 745.7 = 3 HP
3 HP x 15% =0.45 HP loss
3 + 0.45 = 3.45 HP Used (I think a TINY amount of this can be reclaimed with an overdrive pulley)
Posted:1/16/2012 15:04 
Posted:1/17/2012 19:40 