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Author Topic:   altenators
killermiller
Member
posted March 15, 2002 11:40 AM
Is it necessary to run an altenator with a hei ignition?


redneck racing
Member
posted March 15, 2002 12:13 PM
Hey bud i dont i just keep the battery charged at all times but this year im going to run one, im going to get an alternator from a GEO METRO since they only way 5-6lbs and try it out the only thing about one is that it cuts a few of the ponies out but not much id say running one is reccommended if your using a high out put coil. A bvuddy of mine says he is able to turn his on and off while he races with a switch dont know how but he is going to show me will pass on info at later date. Use a battery with high cranking amps i use a EXIDE NASCAR 78dt84ns it has 1100 cold cranking amps the higher the cca the better off you are. Eddie


uforacing51
Member
posted March 15, 2002 12:13 PM
I use a DUI ignition, and have used an alternator and currently not using the alt.
About the only difference is I have to charge the battery before every race, more as a precaution than a necessity. A gell cell battery would be the cats meow, but I always have other things that the money has to go for. I also saw a very expensive water pump one time, that has the alternator in the pump. less wieght and stuff to turn. $500 bucks thou hahahahaha
(I have heard of the switch for during the race too, that works great for late in the main when the battery would be getting low anyway)

[This message has been edited by uforacing51 (edited March 15, 2002).]

[This message has been edited by uforacing51 (edited March 15, 2002).]

wam24u
Member
posted March 15, 2002 06:54 PM
I run mine off thr rear end... Kind of have to cause the electric fans lol


SLEEPY GOMEZ
Member
posted March 15, 2002 11:17 PM
quote:
Originally posted by killermiller:
Is it necessary to run an altenator with a hei ignition?

The alternator is the best way to go for long race performance. For short track short race ise a 16 volt battery from Performance Distributors. Then the voltage shouldnt drop below the required 9.7 volts, I believe.

When rules allow I like to use 18 volts. This is a the original 12 volt battery plus a small 6 volt motorcycle battery. The 6 volt is only switched on after the engine is started. I have run a 13:1 alcohol motor with Performance Distributors parts and a plug gap of .065.

I spoke with Mr. Jacobs, Jacobs Electronics Midland Tx. He said nearly all HEIs will stand 24 volts but to be safe stay at 18 or below.

All this worked for me. SLEEPY



techmaster35
Member
posted March 16, 2002 01:57 AM
i aint ever drove a race car or built one but i have built demoderby cars and most guys dont run alternators because they say they are usless but if you go through several rounds and you will eventually run the battery down or collapse a cell in it. get an optimum series battery and dont worry about damage to it but a few horses is not that much especially if you know that your car will have a better chance of starting than a motor without an alternator, if it has had its engine killed it will restart easier. trust me aint nothin worse than goin out because of a dead battery happened plenty to my derby buddies and a few times to me.


jdukes74
Member
posted March 16, 2002 07:37 AM
I even have a electric fan on my car and I have no problems without a alt. <<<but heres something I do that will really help anyone I leave my charger on and then when we get ready to go out we kick it over to boost while we crank the cAR. that way I no I have pulled several amps off my batt. before I ever go out . And if I need to shut her off in the race (such as a red or if stalled) I no that those amps are there and ready to go.


jdukes74
Member
posted March 16, 2002 07:39 AM
I even have a electric fan on my car and I have no problems without a alt. <<<but heres something I do that will really help anyone I leave my charger on and then when we get ready to go out we kick it over to boost while we crank the cAR. that way I no I haven't pulled several amps off my batt. before I ever go out . And if I need to shut her off in the race (such as a red or if stalled) I no that those amps are there and ready to go.


sideways
Member
posted March 17, 2002 11:07 AM
quote:
Originally posted by sideways:
Sleepy you have to hook the motorcycle batt. and regular batt. pos. to neg. to get 18 volts correct?Similar to 24 volt system with 12volt batt.Right? thanks p.s. enjoyed your articles.

Thanks sideways. You are right on the hookup. Use the switch to turn off the small battery so the starter won't draw too much off of it. Then use a small 14 gauge wire to hook up the 6 volt unit.

SLEEPY

millerlt3
Member
posted March 17, 2002 07:23 PM
Personally I'd loose the alternator, Just like the others say Make sure to charge the battery befor going to the track.


killermiller
Member
posted March 17, 2002 09:41 PM
Thanks everyone for your input! Hey Sleepy..keep up the good work on your articles. I really like the low buck tools. The simple cheap castor/camber gauge was slick.


uforacing51
Member
posted March 18, 2002 03:11 PM
Hey sleepy,
where can I see all these great articles? the low buck tools really interest me cause many racers are a low buck operation


SLEEPY GOMEZ
Member
posted March 21, 2002 10:20 PM
Thanks guys, find the tools in the RACING AROUND section of CIRCLE TRACK. This series is scheduled to run for at least a year. I may need to get your ideas in the future when I run out. Again, thanks for the kind words. SLEEPY


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