H.O Alt voltage (old thread with another problem)

[BeatBox]

im in the process of changing my alt in the integra....biggest pain in the ass BTW

1st question i had and got answered was the size of the belt it was the same so didnt have to change the size. got everything bolted down and running, BUT

NOW I HAVE ANOTHER PROBLEM

Voltage before was 14.1 now it is is 13.5, when i hit the gas theres NO noises from the belt slipping (annoying squealing) but the voltage stays the same, it does spike for a second (maybe from the belt getting tight for a second) but then it stays at about the same 13.5 that it was.

Also since its dark i can see my lights(bumper lights on but not as bright as they should be) they get brighter for that second and dim back down.

What could it be? i double checked everything

Ane help would be appreciated...thanks!

Edited May 9, 2011 by BeatBox

[speedball1978]

the original belt should be fine.. there are reasons the new alt has smaller pulley on it... more output at idle..

[BeatBox]

alright, ill give it a try.

ill post back with an update in a few..hrs lol

[08tahoe]

when i got my h/o alt the stock belt was supposed to fit also, and it did but it made this weird noise when i put the car in gear cause it was loose. so i got a new belt that was half an inch shorter and that one was perfect. you might just have to try your stock belt and go from there

[blownengine]

A smaller pulley will make it spin faster which equals more power. The tensioner should take care of the extra slack. If not then measure and get a new belt.

[EclipseChris]

You may even want to swap the pullies, If the alt is for another engine then that other engine may be including AC or Power Steering which would explain the smaller size.

If the pulley is smaller for better low end output then there is potential for high RPM damage.

Call the alt company to confirm.

[BeatBox]

thanks for the help guys, belt was the same. have another problem now FTMFL (read 1st post)