Highlited. That's the way it needs to be done, otherwise you can open a can of worms.
For most underdrive pulleys sets, crank pulley is smaller, w/p pulley is larger, and alt pulley is smaller.
In regards to accessory speed changes, think of an 18 speed mountain bike you might have had as a kid. On the pedal crank (driving sprocket), the smaller the sprocket, the faster you have to pedal to maintain the same speed. This is the same as the u/d crank pulley. It will turn all accessories slower.
For the rear wheel sprocket (driven sprocket), the larger the sprocket, the faster you have to pedal to maintain the same speed. This is the same as the u/d water pump pulley. It will turn slower than it would with the smaller, stock pulley.
The alt pulley is smaller to gain back some of the speed lost by using a smaller crank pulley.
My car with ASP u/d's, stock alt, stock radiator never had any problems with over heating or charging in Alabama summers. This was with a Taurus fan on low speed. Every car is different and some on here have had problems with u/d on stock setups. I have since upgraded to a 3G, 2 row alum rad, and have the fan capable of high speed via a DCC control.
In regards to accessory speed changes, think of an 18 speed mountain bike you might have had as a kid. On the pedal crank (driving sprocket), the smaller the sprocket, the faster you have to pedal to maintain the same speed. This is the same as the u/d crank pulley. It will turn all accessories slower.
For the rear wheel sprocket (driven sprocket), the larger the sprocket, the faster you have to pedal to maintain the same speed. This is the same as the u/d water pump pulley. It will turn slower than it would with the smaller, stock pulley.
The alt pulley is smaller to gain back some of the speed lost by using a smaller crank pulley.
My car with ASP u/d's, stock alt, stock radiator never had any problems with over heating or charging in Alabama summers. This was with a Taurus fan on low speed. Every car is different and some on here have had problems with u/d on stock setups. I have since upgraded to a 3G, 2 row alum rad, and have the fan capable of high speed via a DCC control.
I had nothing but problems with the UD pulleys. Even just with a 4" crank pulley and a smaller alt pulley I still wasn't charging right at idle, with the A/C, 1200 watt amp, electric fan and headlights on. I also have a 6G 130 alt upgrade. Now with the stock crank pulley I'm 13.8 at idle with everything cranking.
A lot has to do with how you drive. Do you spend a lot of time at idle or sitting in traffic? Do you run your AC? Do you run a lot of electrical accessories? What kind of cooling and charging system are you running?
I doubt you'll see any issues with cooling unless you sit in traffic with the A/C cranked on hot days.
Charging issues, if you are running a stock alternator, you already just about have a charging issue even stock.
I doubt you'll see any issues with cooling unless you sit in traffic with the A/C cranked on hot days.
Charging issues, if you are running a stock alternator, you already just about have a charging issue even stock.