was wanderin if anyone has ever pullied down their stock alt.? i dont have trouble with it drivin down the road but when i sit at stoplights and such it will dip to 14 or lower on the gauge....

so, i was thinkin i might could put a smaller pully on the alt. to make it run a little faster to help when my rpm's are down while i am idling...

thoughts? TIA

 

i don't know of anyone who's ever done it, but if it works let us know. my electrical system is always dipping at stoplights too, dimming my headlights and such. swapped my alternator to no avail. i can't see it over charging...

 

Upgrade the big three...get some runs of 1/0 and giv'er

 

You can get an overdrive pulley with the ASP crank pulley kit. There's a guy on another board that sells just the alt. pulley as well. Pretty sure you need a larger pulley on the alt. to compensate though?

 

mmmm.....i figured it would need to be smaller so it would spin faster but thats just my dumb logic

i have heard of it being done by an alt. shop here in town on lexus cars and others that have lots of electronics on the dash to give them just a little more charge when all the accessories are on but dont know if the have pullies for my truck or not....

i will go find out today and see what they say....

 

oh, and i have done the big three as well so i am charging about 14.7 with nothing on at idle and about 14.4 to 14.5 driving down the road but with stereo and headlights on it will go below 14 at idle.....

 

Def need a smaller. The blower guys get a smaller pulley to make it spin faster.

 

thats along the lines i was thinkin.....

 

well, it worked.....went to the alt. shop yesturday and he had an alt. off a buick with a smaller pully on it id say about 1/4" smaller.....put it on and it never goes lower than the first bar above 14volts. and all for 10 bucks so i am happy.....

 

Thats awesome that a 1/4" made that much of a difference. Might have to try this soon.