And... paying for a set now... thanks for the legwork Lazzer.

I used car-part.com btw... lots of single coil listings... but I searched and found a set of 4 for $40

Correct. You only need one output from each pair. It's just somewhere to connect the other tach wires. On the Miata side (for 1.6) the yellow/blue goes to the gauge and the black/white goes to the ecu. On the 94+ (with internal ignitors) these are connected together. I don't know why Mazda did this on '93.

I picked up a set via car-part.com from a junkyard 15 miles away. 45$, they are from an 03 corolla, 50k miles.

They wouldn't sell me just the connectors for them though, Haven't called the toyota dealer yet to see how much for the connectors.

Thanks lazzer.

I found a set of those (02 toyota corolla-will they work?) for $50, checked (my friend checked them on his car.lol). Is that a good deal or no?

Yes.

All you guys finding the coils in junkyards please keep an eye out for other cars using them and maybe pick up an extra set to sell to the others on the forum that are having trouble finding them. :bigtu:

I'm still keeping an eye out.

Lets also look for a cheap connector solution. I know its on my mind.

+1.

Cheap connectors would be great. :sadwavey:

Try the Dealer. Sometimes (rarely) little things like that can be cheap. I haven't actually tried Toyota yet. Maybe Denso can be contacted directly for replacement (...or whoever made those plugs).

Apparently they wanna sell me a entire car harness :p

updates??

I need to get moving on an ignition upgrade...

Looking on car part.com, should I order any of the following:
2001 Echo
2004 Prius
2005 Scion Xb
Each set is $50

Thanks

Updates to what? I have them running on my '94. I've verified the 1.6 can fire the coils and posted both cars schematics to wire them. Honeydesean has a 1.6 and is sourcing the connectors so as soon as those show up we'll should hear a 1.6 success story.
I pulled my plugs out yesterday to replace them and besides one being burnt to a chrisp from detonation :td: the other 3 look great! lol The gap on them was .045 and these coils are firing them with 10psi of boost with out one missfire. The stock coils were working when I removed them but every once and awhile I'd feel a miss. I have no doubt the COP can handle more boost even if you run the standard gap or recomended .028-.032 gap for turbo Miatas. Startup and and mpg is still much better. Remember I'm running sequential but originally I fired the COP wasted spark. Going to sequential didn't provide any additional improvements for my gas miliage it just allows me to trim timing per cylinder. I take off an extra 1 deg under boost for cylinders 3&4.

That's all I have to update for now.
The only trouble I had with cop was the ticket for doing 45 in a 30. :gay:

No really looking for an update on Sean's progress. I have a 1.6. I don't know what his connectors look like, but is there not a crimp on connector that will work? Or solder leads and fill with epoxy?

Looking to move forward as I'm having ignitor issues. Would rather spend $50 on COPS than $25 on another used ignitor, if it solves my problem for good. Not willing to chance blowing my expensive ecu.

Any comments on the COPS I listed in post #134?

Thx

The part number on the coils I used (from a Corolla) is 90919-02239. I know these fit the valve cover and the reach length down to the plug. Post #84 Flippy used a coil that looks a bit different then mine. The plug is the same it's just the mounting tab is in a slightly different location but they fit. Toss him a private message and get the part number he used. Please post it when you do so we all know what works. Isn't that a 1.6L in the pictures? There's no reason you couldn't solder the wires into the coils and fill it with epoxy. Somewhere in the thread I posted the pin out. With the business end of the coil facing down and the plug facing you the pins are, (from left to right) Ground, Trigger, Tach, Power.

During my testing @12v (small 4ah battery) It'll throw an orange spark 1 3/4" long. -damn- Does anyone know how how many volts it takes to ark that far?

Another note: The coil fires on the falling edge of the trigger pulse and if the pulse is held high it will fire on it's own within maybe 1/2 a second. Probably to protect the primary winding, driver, and car's wiring. Smart coil. ;)

I don't have a junkyard handy, which coils will work? Any 2002+ toyota are the same?

2000 up. There not all -exactly- the same.

Well I took a little drive to the pick and pull south of town and as expected they didn't have any camrys or other toyotas newer than early 90s. Saw one early 1.6L miata.

If you order COPs online from a junkyard, do you get any of the harness with it or do you just get a lone plug?

I'll be "upgrading" to COPs a little later. For now I just have to get the car on the road and start braking it in...

How much does that little bracket cost? It looks nice. Also, how did you guys get your harnesses to look so neat? Is that how they come out of the toyota?

Also, anyone have any recommendations about where the best source is for COPs?

Depends on the junkyard. If they let you pull your own parts just be sure you grab those plugs while your pulling coils. Try to cut the Toyota harness as far back as you can so you have a long length of wire to work with. I bought my coils off ebay and found the connectors in a local junk yard. I'm there all the time so they didn't actually charge me for the connectors. They just waved me out the door and said don't worry about it. They make the most money off larger parts.

The cop coils in that pic are different then ones I'm recomending. It looks like he's using AEM's ignitor because his coils don't have an internal ignitor like the Toyota coils suggested. The best source for the Corolla coils is Ebay or another site someone recomended. Browse thru the thread you'll find it posted.

beer,
I also had no joy at pull a part. they don't have anything that new. I also called around to all the local yards to no avail.

Saturday I put in a few emails to junkyards that I found through a search at car-part.com. Hopefully I will hear back from at least one Monday. If I get a second response, I will send it to you if you want.

Flippy I thought you had it working already?

looks like this post has been going well, i just got back in country, and i'll post the part number off my coils, but i kno for sure they are from an 02 camry, and as far as making it look neat, wire loom, and zip ties!

Post something on Toyota, Scion, or MR2 (or something) forums. I'm sure some of those guys have those coils laying around. Or try some performance shop that specialize in Toyota. Worth a try. I haven't been to my junkyard in a few weeks. I'll look again soon.

Why would those guys have extra coils? Are they upgrading to something even better?

If any of you guys live near non-shitty junkyards and have extra coils, I'll gladly buy them off you.

Alot of people run MSD. But do you want to run a $750 ignition system or a $50 ignition system that's quite capable of working better then the stock Miata ignition? There's always something "better". I'm a Miata guy and I have extra coils laying around. Why wouldn't a Toyota guy? The odds of finding Toyota coils on a Toyota forum are alot better then finding them here. ;)

Has anyone dyno tested the difference?

Also, anyone know where I can get another 3-wire miata ignition harness? Junkyard? I'd like to be able to quickly switch back and forth between the two setups by switching harnesses.

Use the one you take off.

Dyno difference? Well, generally speaking you either ignite the fuel in the combustion chamber or you don't. The cop conversion deals with the problems (misfiring amoung other things) the stock ignition has running high boost levels. I'd guess on an na Miata you wouldn't see a difference on the dyno. In a boosted car you will because the stock ignition isn't firing correctly.
No offence but you seem kinda picky asking for minimal (if even measurable) dyno result differences in a DIY thread where most of us are on a budget. You ask many questions danielson. :gay: If your worried about performance go all out with an MSD ignition. :bigtu:

Obviously I'm talking about boosted performance. See sig.

Hey lazer your pm's are full.
WTF is with these msd's i see do i wire it in place of my igniter to drive my coils or can i use it and drive universal coil sets ive seen a rb26 with 6 coils packing 60K apiece, i would love alot more spark performance. I wired in some revtech coils last year 70k volts suposedly but they suffered from a misfire in high boost. And i was wondering if you could outline how to get alot more spark to my car. I know on my chevy it made a huge difference stepping up to 60K volts, my bike did as well with the revtechs, and i hope the miata can benefit as well. The msd website is way to vague for me to sink the money into the project you know ;)

Yes i posted that in response to the Erich Moraga coil plates that bolt to the cam cover.
Those are 300M coils with no integral ignitor, using an AEM Twinfire to fire them. Coil connectors are from a Supra - harness is supplied with the Twinfire, then i just covered it with some 'wiring harness cover' to neaten it up.
I cant honestly recommend the Twinfire though - im on my third, and only done 250 miles total....

I do know Mazda ran sequential injection on the '93 California cars.

I just found an 01 Echo in a junkyard yesterday, so I now have the connectors.

Tonight I'll start cutting and soldering... and taking pictures.
And my coils are from an 02 Prius.

Cool Sean.

I should have some COPs tomorrow, but I've got some other things to deal with first.

Crap... was their another? Looks like my ignitor is gone... so I need to switch to my COP stuff....

Someone ... uh... find me plugs :p

Dave, do you have your COPs in hand? Can you take a pic of the terminals for me? I'm not planning on trying to source the connectors. Was going to probably use some crimp on spades or something.

Pic please? :bigtu:

I saw all sorts of crimp on pins at Tyco... Minimum quantity was a mere 1,000.

I have an extra set off of a mr2 if anyone needs them... $35 + shipping. Anyone interested? PM me (sorry for the "for sale" in the thread). I'll try to source connectors as well.

So finding a (full) wiring diagram for a Toyota echo isn't terribly easy so If anyone can help me out with finding one (or just telling me which wire means what for the plugs) I'd greatly appreciate it...

It's in the thread somewhere Sean. Sorry I missed your call today. The connectors should all have the same color wires on the plugs except for one. That's the trigger. The others should be Brown (ground), Black/white (12v), and the other smaller one that matches on all four is tach.

Splitime, jump on those plugs Dhaark has.

I've got the coil/ignitor/plug part... he said he'll try to source connectors. Connectors are what I'm currently lacking.

The colors on my connectors aren't the same as the ones you've previously posted about. Therefore, me=slight conundrum... again <_<

my colors are different as well, but the wires are most likely the same left to right as his are.

Bring one over we'll plug it in my car and see if it runs.

honeydesean now has COP working on a 1.6 Miata. Tach works fine, all seems well. My original wiring schematic -might- have the tach and trigger reversed. I don't know if this was my error when I made the schematic or if his coils had those two pins reversed. I will verify it as soon as I can. Untill then try to find the schematic for the car your coils came off of.

What kind of connectors?

The connectors for the COP.

Ok the tach and trigger wires ARE backwards in my schematic (on the COP side). Sorry. I can't attach pics anymore so I can't edit the original post to attach the correct pic. Maybe someone would like to make a donation to Philip for me so I can continue to offer my input. After all. no one is paying me for figuring this out. =)

lazzer, for clarity, you're referring to the pin out for the cops, right.

how did you end up wiring the tach in? leads from all 4 cops? or just 2? did you isolate with diodes?

sean, you owe us some pics dude!

my COPS are on my way to the house as we speak...

<edit> you got your post up as I was writing mine.
upload your diagram to imageshack.us and provide the link

1.6L_COP_Schematic
Attachment 216181

1.8L_COP_Schematic
Attachment 216182

1.8L_newer_COP
Attachment 216183

Please note on the 1.6 an extra ground -should- be added to keep noise levels in the wiring harness to a minimum. I'm assuming the COPs have the secondary winding grounded to the ground pin. Just add an extra length of wire (from where you tie the coil grounds together) directly to a ground on the head.

Tie all the tach leads together. No diodes. That's how I did my 1.8 and how we did Seans 1.6 and it's working fine. It's not as complicated as it might look. When your coil harness is done you should have 5 wires to connect to the old ignitor terminals on the car.

On your COP harness (for 1.6)...

1- Tie all the power and connect to Miata 12v ign. (blue)
2- Tie all the grounds and connect to Miata ground (black) with an additional ground at the head. Keep it short.
3- Tie all the tach leads and connect to Miata tach (black/white AND yellow/blue together)
4- Tie triggers 1&4 to Miata trigger (brown/yellow)
5- Tie triggers 2&3 to Miata trigger (brown)

Use 12ga wire for power and ground.
Use 16ga wire for trigger and tach.

That should be it. :bigtu:

Great. Thanks. One last question, about the COP pinout. What is the pin out, looking at the COP's terminal, left to right, with the spark plug connector facing down? That is the only thing unanswered by your write up.

http://img525.imageshack.us/img525/2927/coppinsar7.jpg

Thanks for your help Lazzer.

B

https://www.miataturbo.net/forums/sh...6&postcount=14

Was answered along time ago. ;)

Oh btw Ben, Sean has pics, just not posted yet.

Thread got big. Thanks.

For others
1 ground
2 trigger
3 tach
4 +12V

Look forward to the pics. Jerry made some adjustments to my MSPNP yesterday. As soon as we verify that everything is good with the stock ignition and current MS settings, the COPs are going in.

I still need coils and connectors. Also looking for confirmation that this will actually help under boost. Does this mod actually help with high rpm/high boost ignition problems?

Yes it should help under all conditions and allow larger plug gap. It removes the plug wires, their electrical losses, as well as the need to ever replace them again.

Definately worth a shot at $60, before spending many hundreds on a fancier solution.