• When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

Ballast Resistor- how hot is too hot?

How hot is too hot is a rhetoric question.....it's similar to the question: how high is up or why is there air? WHY DOES IT MATTER? Perhaps this query should be posed to our resident "trivial expert", specialising in totally inconsequential and useless information, who, cannot resist comments on anything/everything.....like installing a limiter plate in a distributor, Lithium batteries (amps vs amps), tire valve stem cap torque, soldering aluminum, ...... Mr. If I don't comment, I'll explode......Kern Dog.......which he'll likely do an documented expose, complete with temperature vs resistance vs amps vs ambient temp......let's see how long it takes......
BOB RENTON
Tell me BOB, since you are compelled by what can be described as an obsession to follow me around on this forum only to criticize, when was the last time that you actually ever worked on a car?
When have you done bodywork? When have you painted? Have you ever pulled a wrecked car from a yard and rebuilt the structure and got the car drivable again? Have you rebuilt an engine? How about suspension, brakes and steering? Have you installed an aftermarket A/C system? Have you welded quarter panels on, exhaust systems together, installed home-built frame connectors and torque boxes?
I'd love to read from your extensive history of restoring interiors by reskinning seats, installing headliners, carpets and seats.
I'm sure that you could regale us with your skills with aligning body panels, installing windshields, fitting bumpers and installing decals.
Please, share with us all the things that you have done.
Have you noticed that every time you write something to criticize me, the other members here seem to be on my side? Why do you think they do that?
I'm not forcing anyone to read what I write here. You are under no obligation to follow me around. It sure seems like you have KDDS.
Kern Dog Derangement Syndrome.
 
Worst case scenario (maximum ignition circuit current) for ballast resistor (and ignition coil) is when the ignition is on and the engine is not running (when the ignition points are closed, or with the factory type ECU which grounds the coil when there is no trigger signal.) In this steady state you just have the DC resistance of both the Coil and ballast resistor.
When the engine is running, the coil charging and discharging lowers the current because of the coils impedance.
Electrical impedance - Wikipedia
I UNDERSTAND PERFECTLY.....EXCELLENT DISSERTATION ON ELECTRICAL IMPEDANCE......however....the Uncle Elmo's of the group (and their friends and neighbors) cannot comprehend the concept......like measuring magnetism with a screwdriver driver blade (?)......
BOB RENTON
 
No response to my questions, Bob?
 
BOB has a fetish for Nacho 74 also

How do I get let in

LOL
Oh no.....do we now need a 'Fetish Forum' as well as a 'What's' It Worth' Forum ????

Jeez, we're gonna have a busy front page.

1723950787398.png
 
That is wild. If there wasn’t video of it, anyone telling the story would seem like a liar.
 
That’s pretty wacky OK. Good thing that marlin didn’t turn to look up at the noise of the helicopter about the time the guy leaped on it.

To the original poster - you might want to check the resistance on your ballast resister. Most should be around .5 ohm for a Mopar V8 with points. Someone might have stuck a higher resistance ballast on it intended for a GM car.
 
That’s pretty wacky OK. Good thing that marlin didn’t turn to look up at the noise of the helicopter about the time the guy leaped on it.

To the original poster - you might want to check the resistance on your ballast resister. Most should be around .5 ohm for a Mopar V8 with points. Someone might have stuck a higher resistance ballast on it intended for a GM car
Use of a low impedance coil with a stock resistor would make the ballast get very hot and certainly shorten its lifespan.
 
Oh no.....do we now need a 'Fetish Forum' as well as a 'What's' It Worth' Forum ????

Jeez, we're gonna have a busy front page.

View attachment 1712729
I concur, whole heartedly......a fetish forum, a trivial subject forum, a "do it my way is better than your way" forum, a forum dealing with Uncle Elmo's method for checking magnetism with a screw driver complete with values, and of ccourse, a forum of high resolution pixs, dealing with the obvious....carb calibration and which carb is "best" and the all time favorite: why a 160° Thermostat is best when running hot. Definitely new high capacity servers are required.....just my opinion of course.....
BOB RENTON
 
Maybe start your OWN forum, Bob...where you can get the respect that you deserve.
 
I have yet to meet an engineer who can do what I do ....... sometimes Uncle Elmo has huge upside :)

I actually appreciate Bob's input........it's both educational and entertaining

the last thing we need around here is this place to become boring; my opinion, of course! :D
 
Last edited:
I guess I'll be waiting for awhile to learn of all the actual hands on experience that the engineer has.
It always amazes me the ones that criticize others for doing it wrong when they have never done it at all.
 
I guess I'll be waiting for awhile to learn of all the actual hands on experience that the engineer has.
It always amazes me the ones that criticize others for doing it wrong when they have never done it at all.
My hands on was at a young age with friends. We didn’t have money to fix what was broken so we trial/error from the others that had did it before. For me it was a valve cover gasket. In time others would take us under their wing and then school shop teachers and then tech school. All I’m saying is we help each other like the early days and hope for answer from some to help us and correct the problem so we can pass it on. Please guys keep it civil and jokes are fine we all talk **** in the garage while wrenching but get the task done. We all help each other with answers and most of all respect each other and the Mopar brand as a brotherhood -Rick
 
Uncle Elmo's method for checking magnetism with a screw driver complete with values
.....never underestimate the power of being able to magetise or de-magnetise a screwdriver Bob.....I use my gizmo quite often for cleaning out drill swarf from electrical switchboards and the like - or preventing screws from becoming stuck to my tip when doing delicate work.....

This is my gizmo..... :xscuseless: @Kern Dog - you could learn from this gizmo also. :poke:

20240819_063157.jpg
 
Please guys keep it civil and jokes are fine we all talk **** in the garage while wrenching but get the task done.
Wise words..... thanks. Joking around is fine, but let's all keep the personal attacks at home. :thumbsup:
 
I UNDERSTAND PERFECTLY.....EXCELLENT DISSERTATION ON ELECTRICAL IMPEDANCE......however....the Uncle Elmo's of the group (and their friends and neighbors) cannot comprehend the concept......like measuring magnetism with a screwdriver driver blade (?)......
BOB RENTON
Thanks, but you give me too much credit. Just posted so others are aware of the coils impedance property.
Recently watched some you tube car wiring videos, and most of them are very basic and sometimes misleading.
I've been doing electronic for 45 years (30 in Aerospace) and I am still learning things I didn't know.
 
Auto Transport Service
Back
Top