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Evo How Tos / InstallationsPost or link to your detailed how to / installation articles in here. If you have any questions regarding the how tos, feel free to post them in the Request sub-forum.
Thinking further, the spark plug won't allow a 12V connection. So that circuit is dead. So the spark energy has to come back somehow.
Any coil connected to 12V will stay 12V. Secondary coil is not going to step up by magnetic field from coil 1 because direct connection to 12V will make coil 2 form it's own magnetic field. Think about it...
No that's what you assume it will do because you lack knowledge. Secondary winding cannot form a magnetic field as it is not connected to the ecu's power transistor, it just has the 12v supply go through it. The magnetic field is created only between the battery the ecu and the primary.
Check this animation out. FF to 3:00 mark and it shows COP (left) and evo's OEM (right) spark pathways. You may need to slow it down to see how it goes to ground.
Yah again I'm not an EE just a dude trying to understand how **** works. I do understand batteries can be a series element in a circuit. That's really why I want to see a data sheet, I'm not gonna buy and cut up a coil because I don't care that much lol. I'll happily read a data sheet and eat crow if I'm wrong.
You do not need o buy a coil, you can pick a used one that has been thrown away due to being damaged from a junk yard i.e.
Since you do not care that much to do that, or to research on you own until you find the right info, then why should I go on with the matter?
Ok I finally found a good diagram showing the coils in the configuration that the crappy diagram you guys posted tries to show but fails. It is missing critical elements, namely a bypass cap inside the coil pack itself that completes the loop...not the battery. So yah I dunno what the take away here is but I'll post the diagram when I can get to a PC.
Ok I finally found a good diagram showing the coils in the configuration that the crappy diagram you guys posted tries to show but fails. It is missing critical elements, namely a bypass cap inside the coil pack itself that completes the loop...not the battery. So yah I dunno what the take away here is but I'll post the diagram when I can get to a PC.
You do not know what you are on about, i.e you know **** all about the matter, but you are sure that the diagram you found is proper and correct.
As I see this discussion goes no where really, and this exact thread is about how to make a COP kit for the Evo, it would be a shame to contaminated the thread with even further arguements on this matter.
Create another thread if you wish, and have other members relative to the matter chime in.
You do not know what you are on about, i.e you know **** all about the matter, but you are sure that the diagram you found is proper and correct.
As I see this discussion goes no where really, and this exact thread is about how to make a COP kit for the Evo, it would be a shame to contaminated the thread with even further arguements on this matter.
Create another thread if you wish, and have other members relative to the matter chime in.
Marios
The diagram I found is from the Evo X FSM, I need to convert it before I can upload the page because the forum doesn't support pdf's (that I know of).
The diagram I found is from the Evo X FSM, I need to convert it before I can upload the page because the forum doesn't support pdf's (that I know of).
There are different types of pencil coils, the toyota(denso) ones used usually to make the COP for the Evo in conjuction with the harness of the Evo 4-9 and ECU, are as I said, so different coils use different paths. I have not done any research on the matter in regards to the EVO X and its 4 pin plug coils/ and harness, but it is possible that the loop can be closed with in the coil pack.
Marios
Last edited by Evo8cy; Feb 20, 2018 at 09:18 AM.
Reason: typo
There are different types of pencil coils, the toyota(denso) ones used usually to make the COP for the Evo in conjuction with the harness of the Evo 4-9 and ECU, are as I said, so different coils use different paths. I have not done any research on the matter in regards to the EVO X and its 4 pin plug coils/ and harness, but it is possible that the loop can be closed with in the coil pack.
Marios
So find a decent diagram to prove it, I've done plenty of leg work here
Last edited by Biggiesacks; Feb 20, 2018 at 10:17 AM.
Reason: Trying to be constructive
Could the 40,000V find its way back to secondary coil through the alternator? I still don't believe it goes through battery since you're right that car will keep running with battery disconnected.
Originally Posted by Biggiesacks
So find a decent diagram to prove it, I've done plenty of leg work here
So find a decent diagram to prove it, I've done plenty of leg work here
You have done nothing actually but confuse people. I explained how things are. Re-read my posts and if you wish to discard them, then do so, I have nothing else to say. I suggested the best way for you to be convinced, beter than any online diagram since the one posted is not decent enough for you. If you wish to to take the matter further and be sure of the knowledge you find, follow my suggestion, or search the internet until you find what you are looking for, if you do that is.
Could the 40,000V find its way back to secondary coil through the alternator? I still don't believe it goes through battery since you're right that car will keep running with battery disconnected.
It is actually 50K-55K Volts, and you got it wrong the car will not start with the negative terminal disconnected, the loop is interrupted.
That was my last post on the subject matter, as I said I have nothing else to add, if you wish to research further on this, you'll need to do it on your own.
Dude, disconnect your battery while engine is running. If 50,000V goes through the battery, then it should stop running when battery is disconnected (while it is running).
It will continue running, so the 50,000V can't be running through the battery right?
Originally Posted by Evo8cy
It is actually 50K-55K Volts, and you got it wrong the car will not start with the negative terminal disconnected, the loop is interrupted.
That was my last post on the subject matter, as I said I have nothing else to add, if you wish to research further on this, you'll need to do it on your own.
Stay safe, enjoy your evo.
Marios
Last edited by 2006EvoIXer; Feb 20, 2018 at 03:38 PM.
I'm confused at what you're saying in bold, second ground is not activated? Left out?
For the second bold, are you saying a COP is stonger than an OEM coil? OEM is bigger and heavier in size. Maybe 2 COP is stronger than one OEM, but I don't know about one to one.
I think we are not understanding because of the words used?
Originally Posted by Evo8cy
The post about the oem ignition system loop is correct.
The toyota ignition coil internal diagram is also correct.
The loop on the COP system works in the same way as the stock ignition does.
The reason it does not act as an isolated closed loop system is because the feedback line or second ground is not activated but left out on the Evo, unless one decides to activate it through an aftermarket ECU.
Also about the COP, it works best when a sequential type of ignition is used through an aftermarket ECU.
As a wasted spark type it performs at least as well as the dual output coils on the stock or aftermarket ecu.
The advantage here is that, it allows one to incorporate stronger coils than the dual output oem ones, at less than half the price of a set of quality uprated oem type units such as the Okada direct replacements for example. Even If one merely needs to refresh the ignition system, builds the COP system himself, it will cost even less than buying two brand new oem original mitsubishi dual output coils.
