Alternator yes or no?

[Egoracing]

dont know were i read it but it said you have to be above 13.5 to keep it at optimal working volts. and would think that it take less to run a HEI. the reason they stay away from HEI is because they brake up at higher RPM'S the way i see it it takes more power to make more spark so would think that a box type system would take more power to run it.

HEI ignitions LOVE voltage! The higher the better and I have seen them tested with 18 volt systems and run. You have to have a good one to run in a race application and it has to be set up correctly to get the most from it. When we chassis dynoed our engine we found that after about 20 minutes of run time the engine started dropping power.

[twisterf5]

HEI ignitions LOVE voltage! The higher the better and I have seen them tested with 18 volt systems and run. You have to have a good one to run in a race application and it has to be set up correctly to get the most from it. When we chassis dynoed our engine we found that after about 20 minutes of run time the engine started dropping power.

you right to a point. was not getting any numbers that i could compare so just got off the phone with MSD. they said the box will put out more spark energy than HEI but on amp draw the HEI does pull more at low rpm than tapers off the box will pull more amp after 7000. i ask them to compare there MSD HEI VS THE 6AL.
all in all the box is better. i run the HEI just because it is faster to fix than changing out a box or coil. but we do run a box on the big engine.has any one tried the hyfire box and compared them to MSD i run the hyfire would like to know if they are any better or worse.

[dirty white boy]

dang,..a intelligent conversation bout a interesting subject....how da heII did that happen???

[twisterf5]

dang,..a intelligent conversation bout a interesting subject....how da heII did that happen???

well i always strive to be better than i am and don't think i know it all. you got that car ready yet/ya doing to auction tomorrow.

[Egoracing]

If you see "Only one battery" in some of the rules, that is from several years ago when people would run 2 batteries and have them wired to put 12 volts to the car BUT 24 volts to the coil. This is why you also still see some rules say 12 volt battery, that is easy to get past using an alternator that puts out 14 volts OR a 16 volt alternator with the exciter circuit wired to shut the charge to the battery off once it is topped off.
The box is more consistent of a draw on the battery even at lower RPM where it is throwing multiple sparks. HEI are also more temperature sensitive and the performance suffers as they get hotter.

[Dirtrunner35]

I run a alternator always, wouldn't like to charge the battery at the track. A little insurance I guess. The amount of hp it takes to one run would not effect my car. A modified .

Now if I was 2 tnths from the leader every week then maybe, just maybe I wouldn't run one. Monkey see , monkey do is what I see too much. At the track I run at most cars get loose or tight and slow down and nothing to do with the ignition system.

I guess people could run a switch and turn it off when racing if it made them feel better.

[dirty white boy]

well i always strive to be better than i am and don't think i know it all. you got that car ready yet/ya doing to auction tomorrow.

gotta mount up some new tires,..ether rebuild or replace my carb....work on set up...other than that my limited car is ready!! trying to scrounge nuff parts to finish this late model i drug home,but itll be a while on that....got the itch to build a mopar pure stock but been putting calamine lotion on it...lolol

[Racer63]

Got tired of reading thru all the bull but can anybody recommend a good setup to run off the back of the motor. Crate Late with Winters Bell and Bert. Coupler has the teeth on it for a belt.

[race21j]

Got tired of reading thru all the bull but can anybody recommend a good setup to run off the back of the motor. Crate Late with Winters Bell and Bert. Coupler has the teeth on it for a belt.

Check with Jones, they offer( if I remember correctly) a HTP pulley for the alternator. The mount may be an issue for the winters bell.
JMO

[racin6mod]

Got tired of reading thru all the bull but can anybody recommend a good setup to run off the back of the motor. Crate Late with Winters Bell and Bert. Coupler has the teeth on it for a belt.

KRC has a couple set up to pick from one is 160 the other is around 300. the use powermaster alterators.if yyou run a rear mounted powersteeering/fuel pump it's a pretty simple pully change and adding a bracket/alt.