|
Author
|
Topic: Underdrive pullies
|
slow5oh
¯
Member # 12881
|
posted
 
 
so I put some underdrive pullies on today and when I idle at a stop light my voltage drops a little. Not really concerned but I wanna know if there's anything I could do about it?
--------------------
'90 LX Mustang
SIKWIDIT CAR CLUB
Posts: 75 | From: American Canyon | Registered: Apr 2013
| :
|
|
sleeping stallion
¯
Member # 8162
|
posted
I think it's because u changed the alt pulley someone will correct me
--------------------
1990 coupe HCI Boost
SEMPER FIDELIS
Posts: 1650 | From: Modesto ca | Registered: Jan 2008
| :
|
|
SLOW95GTS
¯
Member # 10365
|
posted
That's the side effects of under drive pullies, so those 3hp makes the alternator work harder. I'd put the stock alternator pulley back.
--------------------
1995 Mustang GTS 5.0 - "minor mods"
Posts: 1199 | From: East Bay | Registered: Oct 2010
| :
|
|
LXjames
¯
Member # 10791
|
posted
Compare your old and new alt pulley I would only run crank an wp under drive and even that will lower your charging volts. Switch it back see if it helps an if you didn't change it at all it's probably a weak alternator that's been even more weakend by the now slow rotation of your accessories
--------------------
On Point Motorsport prez.
King Lx
Posts: 4761 | From: Pittsburg CA | Registered: Mar 2011
| :
|
|
slow5oh
¯
Member # 12881
|
posted
quote:
Originally posted by SLOW95GTS:
That's the side effects of under drive pullies, so those 3hp makes the alternator work harder. I'd put the stock alternator pulley back.
oh okay, thanks guys
--------------------
'90 LX Mustang
SIKWIDIT CAR CLUB
Posts: 75 | From: American Canyon | Registered: Apr 2013
| :
|
|
slow5oh
¯
Member # 12881
|
posted
quote:
Originally posted by LXjames:
Compare your old and new alt pulley I would only run crank an wp under drive and even that will lower your charging volts. Switch it back see if it helps an if you didn't change it at all it's probably a weak alternator that's been even more weakend by the now slow rotation of your accessories
when I swapped the alternator pulley they were the exact same size(I think cause I have a 3G alternator) but my volts didn't drop so much to where I should worry about it, just wanted to see if it was normal
--------------------
'90 LX Mustang
SIKWIDIT CAR CLUB
Posts: 75 | From: American Canyon | Registered: Apr 2013
| :
|
|
LXjames
¯
Member # 10791
|
posted
It's normal also you could raise your idle speed just a hair so it won't flutter with all your lights radio on at idle
--------------------
On Point Motorsport prez.
King Lx
Posts: 4761 | From: Pittsburg CA | Registered: Mar 2011
| :
|
|
SLOW95GTS
¯
Member # 10365
|
posted
It's normal not a big deal until you add beat or other things that work off you battery/alternator.
--------------------
1995 Mustang GTS 5.0 - "minor mods"
Posts: 1199 | From: East Bay | Registered: Oct 2010
| :
|
|
slow5oh
¯
Member # 12881
|
posted
sounds good, thanks guys
--------------------
'90 LX Mustang
SIKWIDIT CAR CLUB
Posts: 75 | From: American Canyon | Registered: Apr 2013
| :
|
|
Email this post to someone!
Printer friendly view of this Ford topic
