hello all


my engine is running now after the tpi to carb swap.
i have see that the alternator is bad charging at idle!
when i give a little more gas on the throttle they charging good!

i have a mid mouth pulley set from march.

alternator pulley (the alternator is a 140 amp)
crank pulley
P/S pulley

the waterpump is a electric one

what is my problem here and how can i fix it!

many thanks dennis

 

If they are underdrive pulleys then there really is no problem. Underdrive pulleys are known for this. If you only need to raise the idle 100 RPM's or so then you could just try raising the actual idle RPM so the alternator will charge.

 

Thats pretty much how underdrive pulleys work. Less drag on the rotating assembly for more power. The alternator will charge less because it's not turning as fast.

 

okey i understand that!

is there a pulley that i must buy to fix the problem!
the alternator must turn faster to charge!

this is the pulley kit i have!

http://cgi.ebay.com/ebaymotors/March...Q5fAccessories

 

Like it was said before just adjust the idle so that the engine idles higher thus putting out more rpms so the rotation of the alternator is faster thus causing it to charge better. I had the same problem and adjusting the idle fixed it.

 

You need to use your stock alternator pulley or the March Overdrive pulley.
If you then still have a problem, then tighten the belt more, or switch to an external adjustable voltage regulator for your alternator.
Pics:
http://s702.photobucket.com/albums/w...adis3/Pulleys/