No more charging issues
#3216845
02/28/24 03:54 PM
02/28/24 03:54 PM
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Joined: Mar 2006
Posts: 9,834
MI, usa
dvw
OP
master
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OP
master
Joined: Mar 2006
Posts: 9,834
MI, usa
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After 11 years I gave in. Found a way to mount a real alternator instead of the Denso mini. It took some searching to find one with a short enough motor plate to pulley C/L that would fit. Ended up with a GM style CS130 from Powermaster. It features 100 amp output at idle, 140 amp at speed. No more low voltage driving thru the pits. Also decided to run a Stinger high amp solenoid inline. This way the 2.0 cable from the battery could be used as the charge wire. Now it shuts off with the safety switch or ignition. At 1500 it'll hold over 18.5 volts at idle with everything switched on.
Doug
Last edited by dvw; 02/28/24 06:38 PM.
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Re: No more charging issues
[Re: dvw]
#3216875
02/28/24 07:06 PM
02/28/24 07:06 PM
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Joined: Jan 2003
Posts: 16,924
NC
440Jim
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,924
NC
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... At 1500 it'll hold over 18.5 volts at idle with everything switched on.
Doug
Is that a 16V system (battery)?
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Re: No more charging issues
[Re: 440Jim]
#3216974
02/29/24 07:26 AM
02/29/24 07:26 AM
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Joined: Jan 2003
Posts: 8,022
Tulsa OK
Bad340fish
master
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master
Joined: Jan 2003
Posts: 8,022
Tulsa OK
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I have a parts store reman CS130 on my car and it has been great. With a 5" crank pulley it charges at idle with all of my electrical crap going.
68 Barracuda Formula S 340
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Re: No more charging issues
[Re: HardcoreB]
#3216988
02/29/24 09:53 AM
02/29/24 09:53 AM
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Joined: Jan 2003
Posts: 2,915
A shed in England
Tig
master
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master
Joined: Jan 2003
Posts: 2,915
A shed in England
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Looking good but, some of us don't even need an alternator. Just for info, I borrowed a calibrated ammeter from work and connected it inline with the Alternator o/p. We were pulling over 50A at Idle with just the fans, water pump, fuel pump, ign and data logger on. I didn't try it with the lights on as well since the the shunt for the ammeter was only rated for 50A  With the engine off and just the lights the current was around 20A, this time connected to the battery feed (it didn't read anything connected to the alternator  ). My conclusion was: If I had a race car I'd still run an alternator, though I do know folk who just keep the battery topped up between rounds and don't seem to have any issues 
'74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials.
9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge.
RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03
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Re: No more charging issues
[Re: Tig]
#3217070
02/29/24 02:54 PM
02/29/24 02:54 PM
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Joined: Jan 2022
Posts: 138
Connellsville
71Demon528
member
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member
Joined: Jan 2022
Posts: 138
Connellsville
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Looking good but, some of us don't even need an alternator. Just for info, I borrowed a calibrated ammeter from work and connected it inline with the Alternator o/p. We were pulling over 50A at Idle with just the fans, water pump, fuel pump, ign and data logger on. I didn't try it with the lights on as well since the the shunt for the ammeter was only rated for 50A With the engine off and just the lights the current was around 20A, this time connected to the battery feed (it didn't read anything connected to the alternator ). My conclusion was: If I had a race car I'd still run an alternator, though I do know folk who just keep the battery topped up between rounds and don't seem to have any issues I used to not run an alternator and only charged in between rounds with a 16v battery. Never had an Issue. Then got sick of hustling around if I made it to round robin. Put a 150amp alternator on, and was one of the best investments I ever made. Now I don’t have to charge at all in between rounds.
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Re: No more charging issues
[Re: 71Demon528]
#3217201
03/01/24 07:55 AM
03/01/24 07:55 AM
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Joined: Jan 2003
Posts: 4,048
Shelby Twp. Mi
HardcoreB
master
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master
Joined: Jan 2003
Posts: 4,048
Shelby Twp. Mi
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Looking good but, some of us don't even need an alternator. Just for info, I borrowed a calibrated ammeter from work and connected it inline with the Alternator o/p. We were pulling over 50A at Idle with just the fans, water pump, fuel pump, ign and data logger on. I didn't try it with the lights on as well since the the shunt for the ammeter was only rated for 50A With the engine off and just the lights the current was around 20A, this time connected to the battery feed (it didn't read anything connected to the alternator ). My conclusion was: If I had a race car I'd still run an alternator, though I do know folk who just keep the battery topped up between rounds and don't seem to have any issues I used to not run an alternator and only charged in between rounds with a 16v battery. Never had an Issue. Then got sick of hustling around if I made it to round robin. Put a 150amp alternator on, and was one of the best investments I ever made. Now I don’t have to charge at all in between rounds. I still run an alternator FWIW. I too had to 'sink' the alt body into the motorplate. The number of 'rounds' I've ever gone is limited, which I'm sure Doug read it as an inside joke. It took a little attention but, mine recharges well above 1600rpm with my set-up (which is one fan). But, I'm getting pushed thru staging too(starter hit is the biggest drain). Generally speaking, for a good bracket guy, I don't see why you wouldn't engineer a good charging system.
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Re: No more charging issues
[Re: HardcoreB]
#3217210
03/01/24 09:00 AM
03/01/24 09:00 AM
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Joined: Jan 2022
Posts: 138
Connellsville
71Demon528
member
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member
Joined: Jan 2022
Posts: 138
Connellsville
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Looking good but, some of us don't even need an alternator. Just for info, I borrowed a calibrated ammeter from work and connected it inline with the Alternator o/p. We were pulling over 50A at Idle with just the fans, water pump, fuel pump, ign and data logger on. I didn't try it with the lights on as well since the the shunt for the ammeter was only rated for 50A With the engine off and just the lights the current was around 20A, this time connected to the battery feed (it didn't read anything connected to the alternator ). My conclusion was: If I had a race car I'd still run an alternator, though I do know folk who just keep the battery topped up between rounds and don't seem to have any issues I used to not run an alternator and only charged in between rounds with a 16v battery. Never had an Issue. Then got sick of hustling around if I made it to round robin. Put a 150amp alternator on, and was one of the best investments I ever made. Now I don’t have to charge at all in between rounds. I still run an alternator FWIW. I too had to 'sink' the alt body into the motorplate. The number of 'rounds' I've ever gone is limited, which I'm sure Doug read it as an inside joke. It took a little attention but, mine recharges well above 1600rpm with my set-up (which is one fan). But, I'm getting pushed thru staging too(starter hit is the biggest drain). Generally speaking, for a good bracket guy, I don't see why you wouldn't engineer a good charging system. Ya I figured Doug saw the inside joke lol.
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Re: No more charging issues
[Re: Cab_Burge]
#3217328
03/01/24 06:28 PM
03/01/24 06:28 PM
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Joined: Jan 2003
Posts: 19,363
Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,363
Las Vegas
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Be interesting to see how much if any it affects the performance of the car. More amps eats up some power but I would imaging it is negligible at best. FWIW I have run both full size 130 amp alternators and 55amp minis. Ever since I went to 16V I have not had any battery issues except the one time I left the battery on for three months leaving the car at a buddies hose to race.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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