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Orange box ??? #150678
11/13/08 11:19 PM
11/13/08 11:19 PM
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St.Louis,Mo.
70RR383 Offline OP
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One of my FURD buddies also has a 85 power wagon.He asked me what the advantage of running the orange MOPAR electonic box over stock was.Is there any??Thanks

Re: Orange box ??? [Re: 70RR383] #150679
11/14/08 12:33 AM
11/14/08 12:33 AM
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Arlington, Texas
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Re: Orange box ??? [Re: earlybee] #150680
11/14/08 03:50 AM
11/14/08 03:50 AM
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Kent, Wa
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said to have a lil hotter spark,,,, but they sure have a substantial failure rate


I am truckless..
Re: Orange box ??? [Re: 340SHORTY] #150681
11/14/08 09:24 AM
11/14/08 09:24 AM

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the chrome box is better

Re: Orange box ??? #150682
11/14/08 11:13 AM
11/14/08 11:13 AM
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Lincoln Nebraska
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hotter spark, substantial failure rate, chrome box is (much)better EDIT & have been known to retard at high rpm's

Last edited by RapidRobert; 11/14/08 11:27 AM.

live every 24 hour block of time like it's your last day on earth
Re: Orange box ??? [Re: RapidRobert] #150683
11/14/08 11:16 AM
11/14/08 11:16 AM
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S.E. Michigan
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Go chrome every time.

Re: Orange box ??? [Re: ZIPPY] #150684
11/14/08 11:47 AM
11/14/08 11:47 AM
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Quote:



Go chrome every time.





I recall reading the chrome box runs HOT!! on the street

Re: Orange box ??? [Re: 340dart4spd ] #150685
11/14/08 12:04 PM
11/14/08 12:04 PM

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Quote:

Quote:



Go chrome every time.





I recall reading the chrome box runs HOT!! on the street




no, thats the RACE box. ive run chrome plenty of years to know it works just fine

Re: Orange box ??? #150686
11/14/08 12:20 PM
11/14/08 12:20 PM
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Buzzard County, FL
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Both the Orange and Chrome ECU's utilize the 793266 power switching transistors.

The difference between the two is in the support circuitry hidden beneath the potting material.

Yes, they get hot. That's why Ma Mopar installed ECU "standoffs" on some models. My old Mirada ECU was mounted directly on the fender apron, and I burned through one or two stock ECu's. The orange box on our old Monaco got hot enough to melt the potting material, and it dripped down the firewall.

After reading this post, and having just gone for a cruise in the 'cuda, I verified that , yes, the transistor gets a bit hot.

But that's why the CPU on your computer right now has a cooling fan - millions of transistors, switching current. Except those transistors on the CPU are tiny, and the ECU transistors are big 70's Godzillas.

Re: Orange box ??? [Re: IronWolf] #150687
11/14/08 12:22 PM
11/14/08 12:22 PM
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Quote:

Both the Orange and Chrome ECU's utilize the 793266 power switching transistors.

The difference between the two is in the support circuitry hidden beneath the potting material.

Yes, they get hot. That's why Ma Mopar installed ECU "standoffs" on some models. My old Mirada ECU was mounted directly on the fender apron, and I burned through one or two stock ECu's. The orange box on our old Monaco got hot enough to melt the potting material, and it dripped down the firewall.

After reading this post, and having just gone for a cruise in the 'cuda, I verified that , yes, the transistor gets a bit hot.

But that's why the CPU on your computer right now has a cooling fan - millions of transistors, switching current. Except those transistors on the CPU are tiny, and the ECU transistors are big 70's Godzillas.




Thanks just my point!!

Re: Orange box ??? [Re: IronWolf] #150688
11/14/08 12:24 PM
11/14/08 12:24 PM
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Lincoln Nebraska
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other than a standoff where would be the best place to put it to maximize cooling. I mistakenly ran a GOLD(drag race only) box on the street once & it died in short order.


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Re: Orange box ??? [Re: RapidRobert] #150689
11/14/08 12:31 PM
11/14/08 12:31 PM
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Buzzard County, FL
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The standoff seems to be a good compromise. There is "some" airflow beneath the ECU mounting position.

If mounted directly to the firewall, the steel would absorb and retain the heat and reciprocate the heat back to the ECU and the circuits could exceed their thermal design limits at some point.

Re: Orange box ??? [Re: IronWolf] #150690
11/14/08 12:42 PM
11/14/08 12:42 PM
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Lincoln Nebraska
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I've seen that potted material rolling down & even though(for the moment) it was still up & running you know something ain't right


live every 24 hour block of time like it's your last day on earth
Re: Orange box ??? [Re: IronWolf] #150691
11/14/08 12:44 PM
11/14/08 12:44 PM

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concept of a heatsink is to physically conduct the heat away from the component where the air can cool it.

Mounting it on standoffs allow air to circulate around it but without the airflow (ie in traffic) it wont cool as well.

ive seen melted potting material on heatsinks before but not always. I wonder why some do it and some dont. Some have that yellow gel potting that melts easier than that dark brown rubbery potting.

Re: Orange box ??? #150692
11/14/08 12:49 PM
11/14/08 12:49 PM
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Buzzard County, FL
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Quote:

concept of a heatsink is to physically conduct the heat away from the component where the air can cool it.

Mounting it on standoffs allow air to circulate around it but without the airflow (ie in traffic) it wont cool as well.

ive seen melted potting material on heatsinks before but not always. I wonder why some do it and some dont. Some have that yellow gel potting that melts easier than that dark brown rubbery potting.




Right. And that's exactly why I burned ECU(s) on my old Mirada (fender apron mounted).

Re: Orange box ??? [Re: IronWolf] #150693
11/14/08 12:53 PM
11/14/08 12:53 PM
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Lincoln Nebraska
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that settles it(for me). My next one is going in fromt of the radiator a little bit off to the side.


live every 24 hour block of time like it's your last day on earth
Re: Orange box ??? [Re: 340dart4spd ] #150694
11/14/08 01:09 PM
11/14/08 01:09 PM
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S.E. Michigan
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Quote:

Quote:



Go chrome every time.




I recall reading the chrome box runs HOT!! on the street




Not with a 1 ohm ballast resistor

Don't use a 1/4 ohm ballast for long distance street!

Sacrifice a TINY bit of spark by staying away from 1/4 ohm ballast resistors, and in my rather lengthy experience (over 100,000 miles on the same chrome box, and the same blaster 2 coil) they hold up really well.

Use a 1/4 ohm ballast, and you'll have 1. a slightly hotter spark 2. more heat to deal with and 3. higher failure rates for the coil and ecu.

I do have one ancient orange box left from the '80s that still works great, but by and large the chrome box has a longer lifespan and is worth the extra couple bucks.


Re: Orange box ??? [Re: IronWolf] #150695
11/14/08 01:12 PM
11/14/08 01:12 PM
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Omaha, Nebraska
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Quote:


Yes, they get hot. That's why Ma Mopar installed ECU "standoffs" on some models. My old Mirada ECU was mounted directly on the fender apron, and I burned through one or two stock ECu's. The orange box on our old Monaco got hot enough to melt the potting material, and it dripped down the firewall.






Sorry, Not trying to steal the thread but I had to post upon reading this. Shortly after getting my Challenger running for the first time in many years I noticed a black goo that had dripped from the ECU and down onto the exhaust. Not sure when it did this as most of the time I've worked on it I have rather poor lighting while trying to start it. When I saw it in the daylight it was solid and hard. Question is, Do I need a new one? It seems to start ok but loads up badly until it warmed up. Carb has a fresh kit in it but it was in really bad shape and I'm not sure the kit fixed every thing; Idle screws had some corrosion on them and I'm not sure of the codition of the seats. Also, I'm sure I probably need new spark plugs, but could a bad ECU cause it not to idle until warm? I don't think the goo has dripped since the first time I noticed it but haven't run it that much; maybe a total of an hour over three or four different occasions. What makes it get so hot now? Age?

Re: Orange box ??? [Re: Scott Carl] #150696
11/14/08 01:19 PM
11/14/08 01:19 PM
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Lincoln Nebraska
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Quote:

Question is, Do I need a new one? It seems to start ok but loads up badly until it warmed up. Carb has a fresh kit in it but it was in really but could a bad ECU cause it not to idle until warm?


check the choke/pulloff settings. your ecu is not affecting this.


live every 24 hour block of time like it's your last day on earth
Re: Orange box ??? [Re: ZIPPY] #150697
11/14/08 01:29 PM
11/14/08 01:29 PM

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Quote:

Quote:

Quote:



Go chrome every time.




I recall reading the chrome box runs HOT!! on the street




Not with a 1 ohm ballast resistor

Don't use a 1/4 ohm ballast for long distance street!

Sacrifice a TINY bit of spark by staying away from 1/4 ohm ballast resistors, and in my rather lengthy experience (over 100,000 miles on the same chrome box, and the same blaster 2 coil) they hold up really well.

Use a 1/4 ohm ballast, and you'll have 1. a slightly hotter spark 2. more heat to deal with and 3. higher failure rates for the coil and ecu.

I do have one ancient orange box left from the '80s that still works great, but by and large the chrome box has a longer lifespan and is worth the extra couple bucks.






you are on to something here.

I have always run the 1 ohm ballast and I havent had the problems others have had. That 1/4 ohm will juice the coil more which has its - side run thru the ign box. so ya, the 1/4 ohm ballast should heat the box up more

Re: Orange box ??? #150698
11/14/08 01:45 PM
11/14/08 01:45 PM
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Hampton, Ga.
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Correct me if I'm wrong, but the ballast only controls the coil, the box uses a full 12V. And as far as the orange box, the old ones were great, the past 10 years though, they were junk and wont last no time.


70 Dart Swinger 72 D-100 440 shortbed 76 Pinto, 68k 21mpg!
Re: Orange box ??? [Re: 70dart360] #150699
11/14/08 01:47 PM
11/14/08 01:47 PM

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the negative side of the coil is triggered inside the box. That is what that transistor does. It is a switch. It closes and opens the negative side of the coil when the magnetic pick up in the distributor tells it to.

So ya, more voltage and current to the coil, the more power thru that transistor so it WILL get hotter. If the heat cant be disapated fast enough, it will blow or melt that potting material

Re: Orange box ??? #150700
11/14/08 02:56 PM
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For short runs any of the boxes will take full alternator voltage but will get over hot for crusing around. Stock boxes are limited to 5500 RPMs. The coil will also take short periods of full voltage. But will boil the oil if left on to long. When you put more voltage thru the coil it will produce a hotter spark. But none of them will put out more spark than is needed to jump the gap on the plug. Thats why we open up the gap when we have hotter ignition systems to make the coil fire more voltage. The better quality of box you use the better it will handle the extra voltage. Thats why FBO designed their Box and coil to take Higher voltage with out melting down. But they still need a resister to control the voltage on the street . I run their system on my race car a full voltage but then the car rairly runs longer than a few minutes. Also they use better Transister and circutry that improves the slew rate which is the time it takes the signal to travel thru the box and to the coil. That slew rate is high on the Mopar boxes thats why they retard the timing. All boxes do it some, but the better the circutry the lower the slew rate and the less retard. FBO also has timing kits that allow you to adjust the distributor mechanical advance with out welding the slots and can be installed or removed with out damaging the distributor the kit has 4 preset curves but can be filed to make multipul advances www.4secondsflat.com

Re: Orange box ??? #150701
11/14/08 08:04 PM
11/14/08 08:04 PM
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Buzzard County, FL
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Are you familiar with the internet term "astroturfing"

Because , "sho enuff" that's what you are doing here, and frankly, I wish you would stop !!!

Re: Orange box ??? [Re: IronWolf] #150702
11/14/08 10:15 PM
11/14/08 10:15 PM
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I have used the same orange MP ecu since 1997. It was on my boys Dart and then when he got MSD I put it on my 63 when I put it on the road in 2006. I use a .75 ohm ballast and the old Acell Super coil. I shift my 63 at 6200 and trap about 6300 and it never misses a beat. I can also tell you my boys Dart did not run any faster when he put MSD on it. Here is where I have it mounted on my 63 with no problems. Ron


Last edited by 383man; 11/14/08 10:15 PM.
Re: Orange box ??? [Re: IronWolf] #150703
11/14/08 10:27 PM
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Astro turfing that is new to me. Sorry if my info isnt worthy of your superior intellect I was just offering some info. If my suggesting people that can help others is astro turfing then so be it. And that the following guy put a MSD on his sons car and it didnt make any differance supports my assumption about ignitions not putting out more than they need to to jump the gap.Makes MSD kind of worthless like people that critisize others to make them selves seem better.

Re: Orange box ??? #150704
11/14/08 10:40 PM
11/14/08 10:40 PM
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You are an astroturfer because you are pimping another's products online.

You are "probably" correct in assuming I have a superior intellect, as well.

Re: Orange box ??? [Re: IronWolf] #150705
11/14/08 11:39 PM
11/14/08 11:39 PM
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My, don't we have a high opinion of ourselves!!!

Re: Orange box ??? [Re: 70RR383] #150706
11/15/08 12:14 AM
11/15/08 12:14 AM
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Grab the chrome box. I had an orange box and it didnt even last a year. Even my buddy got a deal that was worse than that. He ordered a gold ecu from summit and the thing didnt even work!

Re: Orange box ??? [Re: 70RR383] #150707
11/15/08 11:52 AM
11/15/08 11:52 AM
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Quote:

One of my FURD buddies also has a 85 power wagon.He asked me what the advantage of running the orange MOPAR electonic box over stock was.Is there any??Thanks




I would run the stock ECU. FWIW,I have never had any problems with any of the orange box ECU's I have used.


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We use Superformance gaskets and Turbo Action converters/products.
Re: Orange box ??? [Re: RapidRobert] #150708
11/15/08 12:06 PM
11/15/08 12:06 PM
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Quote:

that settles it(for me). My next one is going in fromt of the radiator a little bit off to the side.



You will have to watch out for moisture penetration. They are mounted back there for two reasons, get them out of direct spray from rain and to have the fire wall sink some of the heat away from the transistor. Don't get alarmed if the transistor gets warm, it is supposed to. The output transistors in your AM radio get hotter and manage to stay alive. I used to carry a spare ignition module for fear the thing would die and leave me stranded. After 30 years, I can't remember where I put it. The original won't die. I think it is in the gap between the trunk extension and the fender, now that I think about it. I will have to look. Its in a sandwich bag.
Craig


2014 Ram 1500 Laramie, 73 Cuda
Previous mopars: 62 Valiant, 65 Fury III, 68 Fury III, 72 Satellite, 74 Satellite, 89 Acclaim, 98 Caravan, 2003 Durango
Only previous Non-Mopar: Schwinn Tornado
Re: Orange box ??? [Re: denfireguy] #150709
11/15/08 12:21 PM
11/15/08 12:21 PM
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Lincoln Nebraska
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Good point, it would certainly catch hell if I put it there. I'll have to rethink that.


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Re: Orange box ??? #150710
11/15/08 02:55 PM
11/15/08 02:55 PM
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Quote:

Astro turfing that is new to me. (big snip)




I had to go hit google. Even urbandictionary didn't have it. Stolen from wikipedia:

"Astroturfing in American English is a neologism for formal public relations campaigns in politics and advertising which seek to create the impression of being spontaneous "grassroots" behavior, hence the reference to the artificial grass, AstroTurf."

-bill


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Re: Orange box ??? [Re: thecarfarmer] #150711
11/15/08 03:01 PM
11/15/08 03:01 PM
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Quote:

"Astroturfing in American English is a neologism for formal public relations campaigns in politics and advertising which seek to create the impression of being spontaneous "grassroots" behavior, hence the reference to the artificial grass, AstroTurf." -bill


could you repeat that


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Re: Orange box ??? [Re: 70RR383] #150712
11/15/08 03:18 PM
11/15/08 03:18 PM
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Orange box directly mounted to firewall since 1994 with no problems.

Re: Orange box ??? [Re: JonC] #150713
11/15/08 06:55 PM
11/15/08 06:55 PM
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tennessee
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i have my orange box mounted on core support inside right side under horns. i had one go bad mounted on right inner fender. also one time i had one loose it's ground.always good idea to make sure ground is good before tossing the box. by the way i'm new,so if i posted this wrong sorry.

Re: Orange box ??? [Re: pushbutton] #150714
11/15/08 07:54 PM
11/15/08 07:54 PM
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Lincoln Nebraska
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You posted it perfect. Welcome aboard


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Re: Orange box ??? #150715
11/16/08 01:45 PM
11/16/08 01:45 PM

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Quote:

For short runs any of the boxes will take full alternator voltage but will get over hot for crusing around. Stock boxes are limited to 5500 RPMs. The coil will also take short periods of full voltage. But will boil the oil if left on to long. When you put more voltage thru the coil it will produce a hotter spark. But none of them will put out more spark than is needed to jump the gap on the plug. Thats why we open up the gap when we have hotter ignition systems to make the coil fire more voltage. The better quality of box you use the better it will handle the extra voltage. Thats why FBO designed their Box and coil to take Higher voltage with out melting down. But they still need a resister to control the voltage on the street . I run their system on my race car a full voltage but then the car rairly runs longer than a few minutes. Also they use better Transister and circutry that improves the slew rate which is the time it takes the signal to travel thru the box and to the coil. That slew rate is high on the Mopar boxes thats why they retard the timing. All boxes do it some, but the better the circutry the lower the slew rate and the less retard. FBO also has timing kits that allow you to adjust the distributor mechanical advance with out welding the slots and can be installed or removed with out damaging the distributor the kit has 4 preset curves but can be filed to make multipul advances www.4secondsflat.com




Slew rate is important and can retard the timing if its bad enough.

That being said, Ive heard the hype of FBO but being the sleptic that I am (as well as my electrical engineering background), I'd need to see so me numbers that back it up. And by numbers, Im not talking about tests run by FBO to sell their products but actual independent test numbers. Also, I could easily figure out the slew rate and any reliability issues if I saw a schematic and a parts list of each box.

Seems like its a heavil;y gaurded secret.

I actually removed the circuit board from an ignition box several months ago. the circuit is pretty elementary. I'd love to compare it to the FBO box to see whats different (if anything)

Re: Orange box ??? #150716
11/16/08 05:56 PM
11/16/08 05:56 PM

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Well you'll just have to Call them but I would imagine that he's as likely to give you his product specs as MSD Or Fast EFI or any other electronics company. As a electrical engineer I would assume you know what kind of things that would cause a increased slew rate.
I'm no engineer I use the product and it works But thats the last any of you will hear from me about that product or possibly any others since All I ever seem to get from You no it alls is greif when I try to participate on the site. So go stroke your egos and give someone else the greif I'm going back out to the shop and work on real cars.

Re: Orange box ??? #150717
11/16/08 07:27 PM
11/16/08 07:27 PM
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Quote:



Slew rate is important and can retard the timing if its bad enough.

That being said, Ive heard the hype of FBO but being the sleptic that I am (as well as my electrical engineering background), I'd need to see so me numbers that back it up. And by numbers, Im not talking about tests run by FBO to sell their products but actual independent test numbers. Also, I could easily figure out the slew rate and any reliability issues if I saw a schematic and a parts list of each box.

Seems like its a heavil;y gaurded secret.

I actually removed the circuit board from an ignition box several months ago. the circuit is pretty elementary. I'd love to compare it to the FBO box to see whats different (if anything)



I agree. Since slew rate is a function of the band width of the amplifier, even with using a discrete pass transistor I don't think it should be a serious issue even at 10,000 RPM. Electronics have come a long way since Chrysler designed the ignition circuit but amps with slew rates adequate to pass even 100,000 pulses per second were common in that era. But you are right, the outboard circuitry would be the limiting factor.
I am a proponent of using capacitive discharge ignitions such as MSD. It will limit the current through the ignition box whether it is orange, chrome, black or aftermarket. I am not endorsing MSD, in fact I have never used one. I have ancient Delta Mark 10s that I built in the 70s and they still work well for me but they have not been made for 25 years. But I am not racing, I just want a reliable ignition. I am also an amateur radio operator and know when an MSD is nearby (or just about any Ford) because my radios go ape with noise.
Just my experiences. I am not an engineer but I do have patents in circuits using op amps so I know enough to get in trouble.
Craig


2014 Ram 1500 Laramie, 73 Cuda
Previous mopars: 62 Valiant, 65 Fury III, 68 Fury III, 72 Satellite, 74 Satellite, 89 Acclaim, 98 Caravan, 2003 Durango
Only previous Non-Mopar: Schwinn Tornado
Re: Orange box ??? [Re: DusterKrazy] #150718
11/16/08 07:30 PM
11/16/08 07:30 PM
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert Offline
Circle Track
Happy Birthday RapidRobert  Offline
Circle Track

Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
Quote:

Even my buddy got a deal that was worse than that. He ordered a gold ecu from summit and the thing didnt even work!


& since there is no return on electrical parts he was SOL right


live every 24 hour block of time like it's your last day on earth
Re: Orange box ??? [Re: RapidRobert] #150719
11/16/08 07:46 PM
11/16/08 07:46 PM
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert Offline
Circle Track
Happy Birthday RapidRobert  Offline
Circle Track

Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
Racecarbob451.Hey stick around, I am with you on this & I disagree with ironwolf's "astroturf" comment. I've been jumped on several times for no reason & what I had to do was tell them why they are full of it & that differs totally from a person respectfully dissagreeing(or addding to)another persons tech advice. There are a few members here who seem to suffer from chronic menstruation problems.


live every 24 hour block of time like it's your last day on earth
Re: Orange box ??? [Re: RapidRobert] #150720
11/16/08 08:36 PM
11/16/08 08:36 PM
Joined: Jun 2006
Posts: 5,155
CT
GTX MATT Offline
master
GTX MATT  Offline
master

Joined: Jun 2006
Posts: 5,155
CT
Quote:

Racecarbob451.Hey stick around, I am with you on this & I disagree with ironwolf's "astroturf" comment. I've been jumped on several times for no reason & what I had to do was tell them why they are full of it & that differs totally from a person respectfully dissagreeing(or addding to)another persons tech advice. There are a few members here who seem to suffer from chronic menstruation problems.



Mention 440 source or Mopar Performance parts, ESPECIALLY purpleshaft cams, and its sure to be a

Ill admit some of the MoPar stuff isnt as great as other stuff, but I kind of like the idea of using it because its almost like its factory to me, at least its made by the company that made my car. If the difference in performance is questionable Id always choose the MoPar part.

Last edited by GTX MATT; 11/16/08 08:37 PM.

Now I need to pin those needles, got to feel that heat
Hear my motor screamin while I'm tearin up the street
Re: Orange box ??? [Re: RapidRobert] #150721
11/16/08 08:57 PM
11/16/08 08:57 PM
Joined: Mar 2005
Posts: 3,445
N.Wilkesboro,NC
D
DusterKrazy Offline
master
DusterKrazy  Offline
master
D

Joined: Mar 2005
Posts: 3,445
N.Wilkesboro,NC
Quote:

Quote:

Even my buddy got a deal that was worse than that. He ordered a gold ecu from summit and the thing didnt even work!


& since there is no return on electrical parts he was SOL right




Right on! He was stuck with a $150 paper weight!

Re: Orange box ??? [Re: GTX MATT] #150722
11/16/08 08:59 PM
11/16/08 08:59 PM
Joined: Mar 2005
Posts: 3,445
N.Wilkesboro,NC
D
DusterKrazy Offline
master
DusterKrazy  Offline
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D

Joined: Mar 2005
Posts: 3,445
N.Wilkesboro,NC
Quote:

Quote:

Racecarbob451.Hey stick around, I am with you on this & I disagree with ironwolf's "astroturf" comment. I've been jumped on several times for no reason & what I had to do was tell them why they are full of it & that differs totally from a person respectfully dissagreeing(or addding to)another persons tech advice. There are a few members here who seem to suffer from chronic menstruation problems.



Mention 440 source or Mopar Performance parts, ESPECIALLY purpleshaft cams, and its sure to be a

Ill admit some of the MoPar stuff isnt as great as other stuff, but I kind of like the idea of using it because its almost like its factory to me, at least its made by the company that made my car. If the difference in performance is questionable Id always choose the MoPar part.




Some mopar stuff is good and some is not so good. But I LOVE mopar purpleshaft cams!

Re: Orange box ??? [Re: DusterKrazy] #150723
11/16/08 11:41 PM
11/16/08 11:41 PM

A
Anonymous
Unregistered
Anonymous
Unregistered
A



Quote:

Quote:

Quote:

Racecarbob451.Hey stick around, I am with you on this & I disagree with ironwolf's "astroturf" comment. I've been jumped on several times for no reason & what I had to do was tell them why they are full of it & that differs totally from a person respectfully dissagreeing(or addding to)another persons tech advice. There are a few members here who seem to suffer from chronic menstruation problems.



Mention 440 source or Mopar Performance parts, ESPECIALLY purpleshaft cams, and its sure to be a

Ill admit some of the MoPar stuff isnt as great as other stuff, but I kind of like the idea of using it because its almost like its factory to me, at least its made by the company that made my car. If the difference in performance is questionable Id always choose the MoPar part.




Some mopar stuff is good and some is not so good. But I LOVE mopar purpleshaft cams!




never a complaint from my old 284/484 cam- except for the complaints I heard from the guys I beat

Re: Orange box ??? #150724
11/17/08 03:55 AM
11/17/08 03:55 AM
Joined: May 2008
Posts: 5,399
Aurora, Colorado
451Mopar Offline
master
451Mopar  Offline
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Joined: May 2008
Posts: 5,399
Aurora, Colorado
Quote:

I actually removed the circuit board from an ignition box several months ago. the circuit is pretty elementary.





I did the same, pulled apart an old orange ECU and reverse engineered it about 10-years ago. It's pretty simply circuitry. I haven't bought any newer production mopar ignition stuff. The last Electronic ignition kit I bought, the distrubitor was assembled incorrectly to where the oil pump tab was a different position than the rotor, and the rotor to cap phaseing was way off too.. This was when Mopar was selling the conversion kits for about $100 (probbably 8+ years ago?)
I have used both the orange and chrome boxes and never had one melt the potting material. The one I tore apart I thought was bad, but found later it was a wiring problem. I do use the Mallory ballast resistor, and I think they are around 0.8 ohm to 1-ohm? I have never burned one of these resistors out, but I have had two of the Mopar ballast resistors fail.
Anyhow, with these ignitions, the ignition coil is doing most of the work.

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