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What cca are some of you running? I have been using 2 850 cca for years, now I am thinking of removing one 44# battery to lose some weight, but also thinking of adding an alternator to maintain voltage & amps while running down the track.

I have an MSD7 ign, elec water pump, elec fan, BG 400 fuel pump, Dedenbear delay box and one wire trans brake solenoid. Have had no problems with two batts & no alt. Did charge between rounds but have went three without chg.

What do you use?

Bob
 

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On our Bantam we run a single Optima yellow top which is about five years old. It's rated at 750CCA, and has no trouble cranking our 13:1 511ci motor. (mini starter) We run a 70 amp alternator that is putting out ~30amps at idle. As far as equipment goes, we have two 9" fans, one 10" fan, electric gauges, transbrake, Biondo Mega 400, electric shifter, Digital 7, ProStar 500 fuel pump and CSR water pump.

We still try and to a top up charge between rounds, but we only use a 12 gauge cord and quick disconnect connector because it doesn't draw much current.

 

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Optima Red Top and a 75 amp Ford alternator. I'm too busy - or lazy - to charge between rounds. Got 1300 passes on the alternator so far, no problems. Dual OEM electric fans, Mallory 685 ignition, Mallory 140 GPH electric pump.
 
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Batteries

I switched to Turbo Start 16V batteries & love them. You can get a 3 post 16V battery so you can run your alternator on the 12V side. I don't run an alternator on my race car. I made 4 back to back 1/4 mile runs on my Top Sportsman car when making my license passes & didn't have time to charge the batteries between runs. My data logger showed that my voltage never dropped below 16v. Plus the starter,waterpump,fan,etc. all spin faster. I think my batteries are 650 cca. Oh yeah I am running MSD 7al-3, Dedenbear command center delay box,Racepak V300 data logger,CSR water pump,Perma cool fan,line lock,trans brake, & CSR starter. Alot of juice being used. Going to try the picture thing again

 

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Early last year I bought one of the new Jeg's one wire alternators. I like it, it is pretty cheap and an easy install. I believe it is a 100 amp. It comes in black or chrome. I am not a chrome person and opted for black. It supposedly reaches full [email protected] with an underdrive kit. I bought the March underdrive with it.

It did not seem to affect the engines power at all despite those 30hp claims some make.
 
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I run one motorcraft 850 cca, no alt. At one time had 2 mallory 250 pumps, 7al, water pump drive, two fans, delay box, throttle stop, air shifter. Never had any trouble, minimal charging betwwen rounds and sometimes would double enter and that would only leave maybee 10minutes of charge time or less. Now I have elec. water pump, one fan, 7al, and the bracket aids.
 

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I run 2 yellow top's with no alternator. But i can tell you this, even with 2 batteres you make a few round's, without charging up my car get's lazy. bz
 

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Mine is not much as far as amps.
Ignition, CSI electric water pump, electronics (delay box, ect). My fuel pump is belt drive and I don't run the fan during a run since I'm on alky.

I run two of the big yellow Wal-Mart batteries. 775 ccs each. I ran my last two for 3 years and just replaced them. They were just starting to get a little weaker. I charge between rounds.

But, I'm seriously looking for a way to mount a small alternator during the winter just so I won't have to charge between rounds. Just pull into the pits, add 2 gallons of alky and be ready again. It's tough to mount one as nobody makes a bracket setup for a dragster with a motor plate.

David Cole
 
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