what racing ign do you recommend?

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Rapid Robert

Rapid Robert

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circle track 1/3 third mile dirt. 360 9-1 2bbl. No ign "boxes", MSD I would think they are referring to. max RPM maybe 6000. what ign system (box/ballast/coil) would you recommend? I have OE electronic dist. I have OE 70's HEI module & "standard motor products" HEI module at the moment along with the straight thru no ballast furd module with the squarish wrap around steel. I kinda like the FBO mopar module with the built in RPM limiter tho tech might have a problem with it. what do you guys think? & thank you for your time. RR
 
Does FBO have a box without the rev limiter?
If not, the IIRC, Proform or Chrysler Chrome box is what I would do.

 
You need clarification as to what's legal, or illegal, first. What does "No box" mean?
(Educated guess? I think it means they want the Chevy guys to use an HEI, which means a stock Mopar electronic chrome box / gold box won't fly.)
 
I will get some clarification of the rules & that was a good video. EDIT HEI is OK
 
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Fitment issues in A body car as in… won’t fit, IIRC.
 
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Rapid Robert said:
I will get some clarification of the rules & that was a good video. EDIT HEI is OK
Click to expand...
There should be no reason in the world they would outlaw the stock Mopar electronic ignition. I think the "no box" rule is to eliminate things like MSD. They'd be hard pressed to try to outlaw a stock electronic ignition. If the Chevy boys can run HEI, the Mopar boys should be able to run Chrysler electronic ignition.
 
Another ignorant circle track rule that is supposed to “level” the playing field that does nothing bu drive up costs. Is like the cast iron head/cast iron intake rules. Plain stupid.
 
Rat Bastid said:
Another ignorant circle track rule that is supposed to “level” the playing field that does nothing bu drive up costs. Is like the cast iron head/cast iron intake rules. Plain stupid.
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Just like Wally Parks and Bill Francis both havin hard-ons for Chevy so they bent, twisted and made up the rules so Chevy could win. Had they not done that, It wouldda been Chrysler, followed by Ford and GM in a distant third.
 
OK.
Lets sort out the crap from the bullsh*t.
The Holden HEI uses the Bosch 4 pin module. I have compared these on the bench with the GM HEI module. The Bosch pulls 5.7 amps, the GM 5.5 amps. More is better, because it is the HEAT in the spark that ignites the mixture. Coil voltage is merely the enabler. A 50,000v coil is trading current for voltage if only 25,000 v is needed to initiate spark.

Coils.
You want an E core or O core coil for max spark energy; they are more efficient than canister coils.

The ign module.

Chrys 'boxes' do not have variable dwell. Bad. GM HEI & Bosch do, so the coil 'on' time is varied according to engine rpm. No point in having high dwell [ coil on ] at low rpms because it is not needed & just heats up the coil. The coil has copper windings, & the resistance increases with heat & reduces spark energy.

The best deal for the OP is a GM HEI dist, upgraded with the MSD # 83647 module.
This module switches 7.5 amps for more spark energy & has an adjustable rev limiter. Of course, it also has the desirable E core coil, & wider dist cap to reduce the chances of crossfiring inside the cap.
 
Bewy said:
OK.
Lets sort out the crap from the bullsh*t.
The Holden HEI uses the Bosch 4 pin module. I have compared these on the bench with the GM HEI module. The Bosch pulls 5.7 amps, the GM 5.5 amps. More is better, because it is the HEAT in the spark that ignites the mixture. Coil voltage is merely the enabler. A 50,000v coil is trading current for voltage if only 25,000 v is needed to initiate spark.

Coils.
You want an E core or O core coil for max spark energy; they are more efficient than canister coils.

The ign module.

Chrys 'boxes' do not have variable dwell. Bad. GM HEI & Bosch do, so the coil 'on' time is varied according to engine rpm. No point in having high dwell [ coil on ] at low rpms because it is not needed & just heats up the coil. The coil has copper windings, & the resistance increases with heat & reduces spark energy.

The best deal for the OP is a GM HEI dist, upgraded with the MSD # 83647 module.
This module switches 7.5 amps for more spark energy & has an adjustable rev limiter. Of course, it also has the desirable E core coil, & wider dist cap to reduce the chances of crossfiring inside the cap.
Click to expand...
That's it, Bosch. I couldn't remember the brand. I just knew Holden used them. Thanks.
 
RRR,
The Bosch module was used in Holden, Ford, Chrys, Mitsu & I think some Nissans here. They were extremely reliable. Cannot recall hearing of failures, but with such large numbers used, I guess it must have happened.
 
Bewy said:
RRR,
The Bosch module was used in Holden, Ford, Chrys, Mitsu & I think some Nissans here. They were extremely reliable. Cannot recall hearing of failures, but with such large numbers used, I guess it must have happened.
Click to expand...
It's like everything else. They aren't "all" Bosch anymore, just like the GM HEI modules aren't "all" GM anymore. Such a huge influx of "Bosch style" modules from you know where and it really craps up the gene pool. LOL
 
when I raced we would use the gold box and bead blast it and repaint it black put a stamped on in with a made up number.
 
good info! Yes the std OE mopar module setup is OK & we can even run the Mopar HEI versions as noted back above. Yes I think the "boxes" reference is to MSD & for sure the rules are a bit discombobulated.
 
Coils.
You want an E core or O core coil for max spark energy; they are more efficient than canister coils.

The best deal for the OP is a GM HEI dist, upgraded with the MSD # 83647 module.
Click to expand...
would one of the $50 ish HEI dists have the best E coil or should I upgrade?
 
Robert,
You raise a very interesting point. Advertising a coil that produces 50 or 60 thousand volts sure sells lots of coils! What the ad fails to tell you is that the coil will in a NA engine will never need to produce that much voltage. The ign system produces enough voltage [ & no more ] to ionise the plug gap, probably 10-20kv on average.
A very important feature of the coil is the purity of the steel core, which consists of thin pieces of stee [ laminated ]l, usually welded together. This purity becomes important at higher rpms where there is less time for the core to magnetise/de-magnetise. A good quality core with high quality steel & the correct alloying elements can go to higher rpms before misfire.
D. Vizard did some coil testing & found a stock HEI coil started to misfire at 4800 rpm. A MSD & ACCEL coil both ran to over 6000 rpm. The spark testing was done into a chamber that used compressed nitrogen @ 142 psi. DV noted that this is a severe test, & sparks were dropping sooner by about 25-30% compared to a running engine.

As for the coils in the cheap Chinese dists, I have no technical info on them but have used a great many of them & never had a problem with coil or module.
 
Rapid Robert said:
good info! Yes the std OE mopar module setup is OK & we can even run the Mopar HEI versions as noted back above. Yes I think the "boxes" reference is to MSD & for sure the rules are a bit discombobulated.
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Hell yeah. I would run that Hi Rev 7500 box and take the stickers off it. lol
 
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