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-   -   Best Battery with no alternator? (https://classracer.com/classforum/showthread.php?t=27828)

428tom 08-18-2010 04:50 PM

Best Battery with no alternator?
 
Just wondering what the best battery to run if you don't run an alternator,that is with a 12v battery.Is there any big gains to be made with a 16v battery.

art leong 08-18-2010 05:14 PM

Re: Best Battery with no alternator?
 
If I were you I would try it before you do away with the alternator.
On my car it's good for 1 tenth the wrong way.

Jeff Lee 08-18-2010 10:51 PM

Re: Best Battery with no alternator?
 
Art, have you tried with a 16V?

I have a new "Performance V" 16V but as my car is under construction, I can't comment on battery voltage life. My research was that it would take a lot of runs to get down to 12V and I checked all the amps my car was using and one 16V was more than ample. The fact I have a 4-speed helps as I don't have all those driver aides with an auto trans which use up a lot of energy!

art leong 08-20-2010 08:14 AM

Re: Best Battery with no alternator?
 
Jeff I haven't tried the 16 volt system. It might be enough. I could eliminate some of the current draw, My fuel pump is total overkill (think thats where most of the ET is).
There are a few other things I want to do first.
Real intake manifold. And a final drive ratio better than 3.73

Jeff Lee 08-20-2010 10:48 AM

Re: Best Battery with no alternator?
 
The '87 Shelby Daytona Z I raced in A/FS had a factory Getrag 5 speed with 3.91 ratio. As I recall, with 20" slicks it went through the lights somewhere around 6200 in 4th . Yours is a stick isn't it?

art leong 08-20-2010 09:43 PM

Re: Best Battery with no alternator?
 
Quote:

Originally Posted by Jeff Lee (Post 205234)
The '87 Shelby Daytona Z I raced in A/FS had a factory Getrag 5 speed with 3.91 ratio. As I recall, with 20" slicks it went through the lights somewhere around 6200 in 4th . Yours is a stick isn't it?

No both Tim and I run an auto. I'm just starting to get in my powerband at 6200 I cross the line at about 6400 at 105 mph. Still using the 20" slicks

THE LEGEND 08-22-2010 09:39 PM

Re: Best Battery with no alternator?
 
I use the ROCK 16v with no alternator. Great piece. 1-910-582-3400

Bobby Fazio 08-24-2010 08:28 AM

Re: Best Battery with no alternator?
 
I use powermaster XS 16v battery with no alternator.. I haven't had an issue yet and I can definitely go 2 rounds without charging but I usually put the charger on after each round. Don't forget you need a 16v charger for that. I can say that at tracks like Englishtown (or any other track where you can't roll down the staging lanes) where you start your car roughly 20-25 times from when you leave the trailer til you return it still cranks great after each run. Also, your starter cranks like 100mph faster you'll hear it! As far as power gains, they say the spark is hotter but I built a new motor this year so I'm not sure about that.

JeffM 08-24-2010 10:34 AM

Re: Best Battery with no alternator?
 
Quote:

Originally Posted by SStock1373 (Post 205905)
I use powermaster XS 16v battery with no alternator.. I haven't had an issue yet and I can definitely go 2 rounds without charging but I usually put the charger on after each round. Don't forget you need a 16v charger for that. I can say that at tracks like Englishtown (or any other track where you can't roll down the staging lanes) where you start your car roughly 20-25 times from when you leave the trailer til you return it still cranks great after each run. Also, your starter cranks like 100mph faster you'll hear it! As far as power gains, they say the spark is hotter but I built a new motor this year so I'm not sure about that.

Bobby do you have the s1600 or the d1600?

Bobby Fazio 08-24-2010 11:26 AM

Re: Best Battery with no alternator?
 
I have the d1000, but I think they call it the d1600 now. Same thing, heavier than the S though but more power. Also before I purchased, I checked with Autometer and Aeromotive to make sure the tach and my fuel pump would work with 16 volts and they all do. My marker lights and headlights are also working fine, they were nice and bright the other night at cecil which was crucial driving around those pits in the dark! No need for a step down resistor.


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