I understand that it's a race damper, with alternator pulley ONLY.

However given my calculations, based on it's ~3.46" size, it's roughly 40% under-driven for the alternator.

Will a pulley with this much under-drive even spin an alternator fast enough to operate properly?

I don't get the reasoning.

 

they also make the OEM style that is normal.

 

Indeed, the one I have on my car is normal sized. It also has provisions for a/c and comes with an optional bolt on piece for power steering.

 

With the ATI race pulley I had to raise my idle speed to 950rpm to get any kind of output. Was pretty happy at 1000rpm. My alternator could be weak also. Its an OBD1 OEM unit.

 

Does anyone happen to know of a balancer in production with a 6.5" diameter alternator drive?

It's worth a shot I guess.

Thanks.

 

You bought da wrong pulley

 

lol, but true

 

Because race cars usually dont need much alternator output. No radio, no A/C, no "system", etc. Just the ECU, dash, and headlights/tail lights.

This is why you dont put "RACE" parts on a street car, lol.