Retrofit coil options for 1JZ and 2JZ

[destrux]

I'm not all that interested in buying another set of stock coils for $50+ each that will crack eventually just like the first set did, so I was looking at some other common COP applications to see what might retrofit. I *think* the ford modular motors use dummy coils (external ignitor). So I was looking at these:

http://www.jegs.com/i/Accel/110/140032-8/10002/-1

They also make a set that have straight boots, which would probably fit better. I'd just have to make adapter plates to bolt them to.

If they would work it would be great, cause I'd have two spares for less than the price of a set of stock coils. I'm not a big fan of Accel, but MSD also makes these, and Summit and Jegs have generic versions too for even less money.

My only concern is that they might be weaker than the stock coils.

 

[hvyman]

Its not like a new coil is going to crank within a year...

 

[IBoughtASupra]

Its not like a new coil is going to crank within a year...

I agree. They will stand up to years of abuse.

 

[OneJArpus]

I got 6 new aftermarket coils for my supra, no issues what so ever with them. Drives very smooth.

 

[destrux]

I was mostly looking at these because of the price. The Jegs coils are $120 for six. I dug around on the mustang forums and found out that their stock coils are good for at least 15 psi of boost at .035" gap (in a supercharged V8 mod motor). They run a .060" gap stock, and they consider .035" a tight gap.

I'm going to pick up two of them and make a bracket and install them in cylinders 1 and 2 to try them out before I buy a whole set. I'll mess with the gap and see how powerful they are compared to my repaired stock coils.

I know the stock coils would work fine for a long time (they seem to last about 100K miles or more), but the cheapest I could find them anywhere was rockauto for ~$300 a set. Not a bad price, but still more than double what these cost.

 

[hvyman]

Can epoxy and heat shink the cracks as well.

Maybe get some msd coils or something too.

N/a cars run higher gaps too. The boost will just blow it out with a high gap.

 

[te72]

Common aftermarket applications for JZ's I've seen are either the 1zz (2zz?) Toyota coils, or the LS GM coils.

 

[spiller]

the factory toyota coils are actually an exceptional stock component. many people have made extremely high horsepower reliably with factory coils (700 hp+). after 20 years of heat exposure, somethings gotta give. like somebody said, new replacements arent going to die in 1 or 2 or even 10 years. I recently replaced my factory coils with new toyota coils that I got for a good price, but i have since realised that my ignition problems are actually due to a faulty stock igniter (apparently they dont like aftermarket ECUs).

The 2ZZ (yaris etc) coils work well because they are coil-to-plug and can be found fairly cheaply at a wrecker but you'll have to fabricate a mounting bracket. the LS1 coils are also a good option but require some re-wiring as they are not coil-to-plug but these also have individual ignitors so you can get rid of the factory ignitor.

 

[destrux]

Thanks for the info.

I'm running the stock ECU right now though. I would need a standalone to run the ZZ or LS1 coils with the individual igniters, correct?

I know it would be beneficial to have the ability to match the dwell time to whatever coil I use, but I don't know if the stock ECU has the proper outputs to trigger "smart" coils at all...


Edit... according to this http://www.supramania.com/forums/showthread.php?88907-JZ-coils-and-standalone-EMS-s/page14 these only work with standalone.

I'll just stick with the stock coils for now. I plan to do a megasquirt system on it this winter, so I'll keep the ZZ coils in mind for then.

 

[spiller]

yes you will need a standalone ECU.

 

[hvyman]

I got some hyundai coils that would prolly be perfect fit as well but they have built in igniters too and would prolly require a standalone.

 

[Dylan JZ]

2ZZ coils win.. but again, standalone is needed.

your only other option is Superspark replacements.