 
Main Menu
|
|
Nevada Classics
|
|
Advertise at CC
|
| S |
M |
T |
W |
T |
F |
S |
| |
|
|
|
|
|
1 |
| 2 |
3 |
4 |
5 |
6 |
7 |
8 |
| 9 |
10 |
11 |
12 |
13 |
14 |
15 |
| 16 |
17 |
18 |
19 |
20 |
21 |
22 |
| 23 |
24 |
25 |
26 |
27 |
28 |
|
|
|
CC Advertisers
|
|
07-07-2015, 05:38 AM
|
 |
CC Member
|
|
|
Join Date: May 2012
Location: Blasdell,
NY
Cobra Make, Engine: Superformance, 408 Windsor
Posts: 125
|
|
Not Ranked
MSD Digital 6AL pn 6425
I originally posted this thread in the Engine Building/Ignition page, but didn't get any response. I'm hoping someone that knows about this issue will see it here. I replaced my old 6AL pn 6420. When I started up the Cobra after the winter this year, it was running real rough, decreased power, but not breaking up. Wouldn't want to take it out on the road. Tapped on the MSD box a few times and then it was running just fine. I replaced the box with a new Digital 6AL and now my Lucas ammeter fluctuates between 0 and +25A when the motor revs up. It's stable at idle. I'm guessing the new box is messing with the voltage regulator. A buddy said it's a known issue, but I couldn't find anything googling the issue. I called MSD and the guy said that the Digital 6AL draws a lot of power, live with it.
__________________
Mike Glados
Blasdell, NY
|
07-07-2015, 09:24 AM
|
 |
CC Member
|
|
|
Join Date: Sep 2002
Cobra Make, Engine: SPF#0760
Posts: 3,407
|
|
Not Ranked
You have a PM
__________________
Wiring Diagrams: SPF MKII, MKIII, GT40, CSX7000, CSX8000, Corvette Grand Sport, and Shelby Sebring, Bondurant & Cinema Tribute Cars.
Owner’s Manuals: SPF MKII, CSX7000, CSX8000, Sebring, Bondurant, Cinema Tribute Cars $ GT40’s..
Large, easy to read and trace schematics with part numbers, wire colors, wire gauge, fuses, and electrical upgrade information. Trouble-shooting and replacement part numbers for those roadside repair adventures.
SPFWiringDiagrams@Comcast.net
|
07-07-2015, 10:01 AM
|
 |
CC Member/Contributor
|
|
|
Join Date: Feb 2000
Location: Greenville,
SC
Cobra Make, Engine: 70 Shelby convertible, ERA-289 FIA, 65 Sunbeam Tiger, mystery Ford powered 2dr convertible
Posts: 12,740
|
|
Not Ranked
Quote:
Originally Posted by Blas
You have a PM
|
And you don't want to share the information with the rest of us for future use? 
Bill S.
__________________
Instead of being part of the problem, be part of a successful solution.
First time Cobra buyers-READ THIS
|
07-07-2015, 01:33 PM
|
|
CC Member
|
|
|
Join Date: Jun 2015
Posts: 136
|
|
Not Ranked
Maybe a resistor placed inline the gauge may help with this.
|
07-08-2015, 07:04 AM
|
 |
Stolen Avitar
|
|
|
Join Date: Oct 2004
Location: Brunswick,
GA
Cobra Make, Engine: BDR 1311 428PI
Posts: 3,044
|
|
Not Ranked
Quote:
Originally Posted by Brooklyn-427
Maybe a resistor placed inline the gauge may help with this.
|
I had to do this with my Autometer gauge. |
07-09-2015, 06:46 AM
|
|
CC Member
|
|
|
Join Date: Feb 2008
Location: Rochester,
NY
Cobra Make, Engine: Superformance
Posts: 194
|
|
Not Ranked
There is an ammeter / voltmeter fix for superformance cars. Something about the ammeter sense wire being in the wrong place that causes needle bounce and battery overcharging. Here is some detail but more can be found at the SCOF site with videos to diagnose the condition as well as how the wiring should be.
Bouncing Ammeter |
07-11-2015, 02:10 PM
|
|
CC Member
|
|
|
Join Date: May 2012
Location: Blasdell,
NY
Cobra Make, Engine: Superformance, 408 Windsor
Posts: 125
|
|
Not Ranked
Thanks Steve-O. The problem didn't exist with the old analog 6AL, pn 6420. I called MSD again, this guy also mentioned that the Digital 6AL draws a lot of power. He said that it should be powered directly to the battery. Not really convenient when the battery is in the trunk. But the pos is wired right with the pos battery cable at the solenoid. The neg wire is grounded on the cowl hoop where the old one was. I could wire the neg right to the engine block. I'm not sure, but I'm guessing that's where the neg cable from the battery goes.
__________________
Mike Glados
Blasdell, NY
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT -7. The time now is 04:01 AM.
Links monetized by VigLink
|
Linear Mode
