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Re: How many Volts
[Re: emarine01]
#443053
08/19/09 04:34 PM
08/19/09 04:34 PM
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Joined: Jan 2007
Posts: 526
NC
barracuda man
OP
mopar
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OP
mopar
Joined: Jan 2007
Posts: 526
NC
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Quote:
Yes, My MSD doesn't like anything below 12.3 you need more stored amps or a charging system, the higher the volts the less the amp draw, your voltage is way too low 
Guess its time for a new battery.
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Re: How many Volts
[Re: barracuda man]
#443054
08/19/09 04:38 PM
08/19/09 04:38 PM
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Joined: Jan 2007
Posts: 3,695
nc
emarine01
master
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master
Joined: Jan 2007
Posts: 3,695
nc
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Quote:
Quote:
Yes, My MSD doesn't like anything below 12.3 you need more stored amps or a charging system, the higher the volts the less the amp draw, your voltage is way too low
Guess its time for a new battery.
Or 2 
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Re: How many Volts
[Re: emarine01]
#443055
08/19/09 04:47 PM
08/19/09 04:47 PM
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Joined: Jan 2007
Posts: 526
NC
barracuda man
OP
mopar
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OP
mopar
Joined: Jan 2007
Posts: 526
NC
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Quote:
Quote:
Quote:
Yes, My MSD doesn't like anything below 12.3 you need more stored amps or a charging system, the higher the volts the less the amp draw, your voltage is way too low
Guess its time for a new battery.
Or 2
Thats right.the car runs 7.04 ets consistent.but here lately it runs 7.15 first two time runs.then bamb 7.04 cool the car down.bamb back to 7.15 seems the longer i charge the battery the faster it runs. 
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Re: How many Volts
[Re: barracuda man]
#443057
08/19/09 05:31 PM
08/19/09 05:31 PM
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Joined: Jun 2009
Posts: 644
Minnesota
Barnstorm
mopar
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mopar
Joined: Jun 2009
Posts: 644
Minnesota
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Found a slick little voltage stepup box from SpeedwayMotors.com #935-64000. Puts 17.5-17.7 volts into the MSD with batt voltage as low as 10.5V. Haven't made a pass yet but guys using it swear by it.
The little old lady from Pasadena is back!
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Re: How many Volts
[Re: Barnstorm]
#443058
08/19/09 06:33 PM
08/19/09 06:33 PM
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Joined: Nov 2005
Posts: 656
Kokomo, IN
540dust
mopar
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mopar
Joined: Nov 2005
Posts: 656
Kokomo, IN
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Here is some real world data, the bottom graph is battery voltage, this is a car without an alternator and two batteries, return style fuel regulator, mallory 250 fuel pump, MSD 7al, Mega 85 Delay box, RPM datalogger running, ACD controlled CO2 shifter, Moroso electric water pump drive, dash and tail lights(LED), and a Shogun LED dial board on. I charge every round. FYI, just data. Open attachement and view full screen to best view.
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Re: How many Volts
[Re: Thumperdart]
#443059
08/19/09 08:24 PM
08/19/09 08:24 PM
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Joined: Jan 2007
Posts: 526
NC
barracuda man
OP
mopar
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OP
mopar
Joined: Jan 2007
Posts: 526
NC
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Quote:
Forget the battery............install an alternator and avoid all bs affiliated w/racing w/out one.
last time i tryed running the alternater i had way to many volts and fried two rpm tacks.whats the best way to hook it up.do i need the alternator regulator or can i run without.
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Re: How many Volts
[Re: barracuda man]
#443060
08/19/09 10:01 PM
08/19/09 10:01 PM
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Joined: Jun 2005
Posts: 726
ohio
mike67net
mopar addict
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mopar addict
Joined: Jun 2005
Posts: 726
ohio
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Quote:
Quote:
Forget the battery............install an alternator and avoid all bs affiliated w/racing w/out one.
last time i tryed running the alternater i had way to many volts and fried two rpm tacks.whats the best way to hook it up.do i need the alternator regulator or can i run without.
You can run a later model alternator with an internal regulator, I just put a Powermaster on mine.
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Re: How many Volts
[Re: mike67net]
#443061
08/19/09 10:26 PM
08/19/09 10:26 PM
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Joined: Dec 2004
Posts: 1,489
St. Louis Mo.
10 o to go
"Happy Don"
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"Happy Don"
Joined: Dec 2004
Posts: 1,489
St. Louis Mo.
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I run 2 batteries and  GM  alt never thought i would need a jump till 3rd round sat click click .Lost the rd .001 - red ouch checked volts at batteries 11.5 started it and 12.5 tach was jumping in high gear. NOW i know why had alt checked 15 volts put on car 14 at batts now What gives???4years thought about putting a trickle charge and load test them . msd6al 2 fans transbrake 2 step dash lites ,tail lites put a alt on if your bracket racing DON
2009 418" build dan smith built
new 9.96 131.82
6.23 108
1.30 60 foot
best to date 9/15/09
8in 727 430 dana 2860 lb 3040 lb w driver
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Re: How many Volts
[Re: mike67net]
#443062
08/19/09 10:32 PM
08/19/09 10:32 PM
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Joined: Jan 2007
Posts: 526
NC
barracuda man
OP
mopar
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OP
mopar
Joined: Jan 2007
Posts: 526
NC
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Quote:
Quote:
Quote:
Forget the battery............install an alternator and avoid all bs affiliated w/racing w/out one.
last time i tryed running the alternater i had way to many volts and fried two rpm tacks.whats the best way to hook it up.do i need the alternator regulator or can i run without.
You can run a later model alternator with an internal regulator, I just put a Powermaster on mine.
What part# on the powermaster.I'm doing a search man them things are high dollar.
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Re: How many Volts
[Re: Barnstorm]
#443065
08/19/09 10:41 PM
08/19/09 10:41 PM
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Joined: Feb 2003
Posts: 989
Rather be in Fallon, Nevada
RussW
super gas
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super gas
Joined: Feb 2003
Posts: 989
Rather be in Fallon, Nevada
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Quote:
Found a slick little voltage stepup box from SpeedwayMotors.com #935-64000. Puts 17.5-17.7 volts into the MSD with batt voltage as low as 10.5V. Haven't made a pass yet but guys using it swear by it.
Do you think it would be any benefit to a 6AL ?
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Re: How many Volts
[Re: barracuda man]
#443066
08/19/09 10:51 PM
08/19/09 10:51 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Quote:
Quote:
Quote:
Forget the battery............install an alternator and avoid all bs affiliated w/racing w/out one.
last time i tryed running the alternater i had way to many volts and fried two rpm tacks.whats the best way to hook it up.do i need the alternator regulator or can i run without.
You can run a later model alternator with an internal regulator, I just put a Powermaster on mine.
What part# on the powermaster.I'm doing a search man them things are high dollar.
I run a 85 amp Denso alt with a external regulator
(I use the high out put Mopar regulator) and I use
just a single battery.... I cant remember how many
years its been since I put a charger on it.
Trans brake, water pump, fan, 7al, 2 fuel pumps and
a tail light plus I'm putting a small fan in the car
to circulate some air inside
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Re: How many Volts
[Re: barracuda man]
#443067
08/19/09 10:56 PM
08/19/09 10:56 PM
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Joined: Jan 2003
Posts: 5,439
So Cal
Sinitro
master
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master
Joined: Jan 2003
Posts: 5,439
So Cal
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A couple of thoughts.. The MSD boxes need voltage to run. Regarding the alternator, a trick we have run on some of our cars is to switch off the alternator's Field lead.. EZ to install a simple toggle switch in series for the Field wire lead, turn it OFF when rippin down the strip. Turn it ON to keep the battery charged. Many people don't realize how much drag the alternator pulls while charging.. Just my $0.015... 
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Re: How many Volts
[Re: Sinitro]
#443068
08/19/09 11:04 PM
08/19/09 11:04 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
A couple of thoughts..
The MSD boxes need voltage to run. Regarding the alternator, a trick we have run on some of our cars is to switch off the alternator's Field lead..
EZ to install a simple toggle switch in series for the Field wire lead, turn it OFF when rippin down the strip. Turn it ON to keep the battery charged. Many people don't realize how much drag the alternator pulls while charging..
Just my $0.015...
I use to do that... made 0 difference
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Re: How many Volts
[Re: MR_P_BODY]
#443069
08/19/09 11:09 PM
08/19/09 11:09 PM
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Joined: Jan 2007
Posts: 526
NC
barracuda man
OP
mopar
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OP
mopar
Joined: Jan 2007
Posts: 526
NC
|
Quote:
Quote:
Quote:
Quote:
Quote:
Forget the battery............install an alternator and avoid all bs affiliated w/racing w/out one.
last time i tryed running the alternater i had way to many volts and fried two rpm tacks.whats the best way to hook it up.do i need the alternator regulator or can i run without.
You can run a later model alternator with an internal regulator, I just put a Powermaster on mine.
What part# on the powermaster.I'm doing a search man them things are high dollar.
I run a 85 amp Denso alt with a external regulator
(I use the high out put Mopar regulator) and I use
just a single battery.... I cant remember how many
years its been since I put a charger on it.
Trans brake, water pump, fan, 7al, 2 fuel pumps and
a tail light plus I'm putting a small fan in the car
to circulate some air inside
I like to do away with the volt regulater less to worry about.been looking at the mancini true one wire one $159.
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Re: How many Volts
[Re: MR_P_BODY]
#443070
08/19/09 11:14 PM
08/19/09 11:14 PM
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Joined: Aug 2007
Posts: 316
Ohio
Lil Wedge
enthusiast
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enthusiast
Joined: Aug 2007
Posts: 316
Ohio
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Yea, I took my belt off years ago and thought I got .04 hun. on a pass,But I tried it at Chrysler Classic after running 10.02, wanted a 9 sec pass, went 10.03, no difference. Would depend on how much juice your battery needed at the time
Last edited by Lil Wedge; 08/19/09 11:15 PM.
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Re: How many Volts
[Re: barracuda man]
#443073
08/19/09 11:16 PM
08/19/09 11:16 PM
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Joined: Jun 2005
Posts: 726
ohio
mike67net
mopar addict
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mopar addict
Joined: Jun 2005
Posts: 726
ohio
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Quote:
Quote:
Quote:
Quote:
Forget the battery............install an alternator and avoid all bs affiliated w/racing w/out one.
last time i tryed running the alternater i had way to many volts and fried two rpm tacks.whats the best way to hook it up.do i need the alternator regulator or can i run without.
You can run a later model alternator with an internal regulator, I just put a Powermaster on mine.
What part# on the powermaster.I'm doing a search man them things are high dollar.
Powermaster 74191, it was $146.95 at Summit. It came with a dyno sheet saying it put out 60+ amps at idle and I think 78+ amps at cruising rpm.
A friend mentioned to me that these alternators can take higher rpms then the types you get in a regular parts store 
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Re: How many Volts
[Re: Bob_Coomer]
#443075
08/19/09 11:22 PM
08/19/09 11:22 PM
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Joined: Jan 2007
Posts: 526
NC
barracuda man
OP
mopar
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OP
mopar
Joined: Jan 2007
Posts: 526
NC
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Quote:
Well I can tell you if the battery doesnt have more than 11.5+ volts it wont matter cause the starter wont work LOL 
It's one off the gear reducion starters.It's at 12 volts with the key on.drops to 10 1/2 to 11 with the engine running and all the comp's on.
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Re: How many Volts
[Re: MR_P_BODY]
#443077
08/20/09 09:42 AM
08/20/09 09:42 AM
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Joined: Aug 2008
Posts: 4,068
Mo.
racerx
master
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master
Joined: Aug 2008
Posts: 4,068
Mo.
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Quote:
Quote:
A couple of thoughts..
The MSD boxes need voltage to run. Regarding the alternator, a trick we have run on some of our cars is to switch off the alternator's Field lead..
EZ to install a simple toggle switch in series for the Field wire lead, turn it OFF when rippin down the strip. Turn it ON to keep the battery charged. Many people don't realize how much drag the alternator pulls while charging..
Just my $0.015...
I use to do that... made 0 difference
x2
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Re: How many Volts
[Re: 72chrgrally]
#443079
08/20/09 09:53 AM
08/20/09 09:53 AM
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Joined: Jan 2007
Posts: 3,695
nc
emarine01
master
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master
Joined: Jan 2007
Posts: 3,695
nc
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16 vdc is a good choice if you need to add weight aft, My 16 volt system is heavy @ 120 lbs - 2 -8 volt in series, We pull 25 to 30 amps out while racing and only charge the night before we race, rarely I see less than 14.5 volts @ the end of the day, engine starts like its on steroids, 8 volt golf cart batteries are cheep 75 to 150 bucks depending on size and make, they make light weight 16 volt single batteries for more bucks if weight is a problem, most 12dc wiring systems will be a little over kill for 16 volts, as volts go up amps go down in the conductor, a little freebee benefit, The lack of a charging system was another plus , less junk up front, no long large gauge wiring and dint have to clean mud from alt winding anymore, it may not be for everyone but if you already have 2 - 12vdcs in the trunk and have to charge in between rounds going up to 2 -8volts is fast and easy, just check any electronics specs for max voltage if you use a lot of stuff , oh and 12dc light bulbs glow brighter @ night and don't last as long
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