Quote:
Originally Posted by MarkM66
Wouldn't you want a larger alt. pulley for economy?
It would turn the alt. less rpms.
If you don't have a temp gauge, I'd get one before you start doing grill block mods.
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Yeah I could see that. However, with the smaller/lighter pulley it puts out 14.7 at idle and keeps the engine from "surging" (revving up to keep volts up). The larger/heavier pulley ran between 14.3 and 14.4 at idle and when I ran my stereo and lights (my toolbox and tailgate have 10 small amber bulbs that turn on when I run my lights) at idle everything got dimmer. With new alternator pulley it no longer dims and runs smoother (no more surges). I think switching from these lamps to LED 194 buld equivelents might save a bit of juice. It is about 60% of the mass of the stock pulley, so it is probably a wash.
I have a temp gauge, but good point. I'll monitor it closely.