Alternator regulator voltage in a '69 B Body

Moderator: Moderators

Post Reply
GranSport
Posts: 315
Joined: Sun Apr 18, 04 11:12 pm
Location: Egham

Alternator regulator voltage in a '69 B Body

Post by GranSport »

'69 Big Block with A/C alternator. Checking output voltage from a choice of two electronic regulators.

One read 14.5v, the other read 14.8v. I was expecting 12.5-13.5V.
Sounds way too high. Was this because the car was just started and the voltage is higher?

Should I check in 5 to 10 mins? I have an old points regulator i can try as well.

Thx
Eddie
User avatar
Pete
Posts: 22109
Joined: Sun Apr 18, 04 10:49 pm
Location: MMA Chairman

Post by Pete »

If it stays at that voltage when you rev it up to about 3000rpm then happy days, if it fails to regulate you may have an issue.............
Pete Wiseman; Cambridge.

Mopar by the grace of God
User avatar
Prothed
Posts: 480
Joined: Sun Apr 18, 04 10:47 pm
Location: Dave of Bexhill

Post by Prothed »

Sounds fine. Strictly speaking I would use the 14.5v one as I think the maximum recommended charging voltage is 14.4v (but in practice 0.1v is neither here nor there).
User avatar
Dave-R
Posts: 24752
Joined: Sun Apr 18, 04 11:23 pm
Location: Dave Robson lives in Geordieland
Contact:

Post by Dave-R »

As long as it stays over 13.5 with all your accessories on and under 15v you are good to go.
GranSport
Posts: 315
Joined: Sun Apr 18, 04 11:12 pm
Location: Egham

Regulator voltage

Post by GranSport »

Thanks guys. I'll do ome checks with higher revs and accessories on.
Looks like I'm in the right ballpark though.

Eddie
Post Reply