CamaroZ28.Com Message Board

CamaroZ28.Com Message Board (https://www.camaroz28.com/forums/)
-   Classic Engine Tech (https://www.camaroz28.com/forums/classic-engine-tech-21/)
-   -   alternator pulley info help needed (https://www.camaroz28.com/forums/classic-engine-tech-21/alternator-pulley-info-help-needed-808338/)

User56898 04-19-2011 11:18 PM
alternator pulley info help needed
 
I have an alternator that only charges the batt at around 2000rpm. At idle my volt gauge reads 12V and at 2000rpm it reads 14-14.4V.

It has a really big pulley, but if i change to a smaller pulley will it fix it so it charges at idle? Or will it just blow the alternator and i should replace it?

User56898 04-21-2011 04:10 PM
Re: alternator pulley info help needed
 
bump de de bump

Z28SORR 04-22-2011 09:51 AM
Re: alternator pulley info help needed
 
Originally Posted by 67speeda (Post 6667827)
I have an alternator that only charges the batt at around 2000rpm. At idle my volt gauge reads 12V and at 2000rpm it reads 14-14.4V.

It has a really big pulley, but if i change to a smaller pulley will it fix it so it charges at idle? Or will it just blow the alternator and i should replace it?
Alternators are not efficient at idle. Putting a large pulley on, will make it less efficient. Many hot rodders recommend that you Do Not put an underdrive pulley on the alt. for this reason.
Yes, replacing the over size pulley with a smaller one(stock) will help with your low rpm charging.


All times are GMT -5. The time now is 10:57 PM.


© 2024 MH Sub I, LLC dba Internet Brands