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  #91  
Old 11-04-2013, 01:32 PM
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Re: $36 Replacement ignition coils?

Id recommend getting the replacement coils from rockauto, the external coils this thread is about are ok but a ***** to find a place to mount and will eventually burn out the ignitor.
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  #92  
Old 11-04-2013, 02:52 PM
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Re: $36 Replacement ignition coils?

Has anyone compared the resistance on the rockauto replacements with the factory specs?
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  #93  
Old 11-04-2013, 10:58 PM
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Re: $36 Replacement ignition coils?

They are the same as factory, they are meant to be factory replacements.
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  #94  
Old 04-14-2014, 07:35 AM
BRZCory BRZCory is offline
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Re: $36 Replacement ignition coils?

Posting just as an update:

I've been running these coils since november (So six months now). No ignitor issues yet. Hardest part was making the plug wires.




I did relocate my battery to make room for the coils, and my car doesn't have ABS, so mounting was super easy due to the wide open spots on the frame rails.
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  #95  
Old 04-14-2014, 07:43 AM
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Re: $36 Replacement ignition coils?

Quote:
Originally Posted by BRZCory View Post
Posting just as an update:

I've been running these coils since november (So six months now). No ignitor issues yet. Hardest part was making the plug wires.




I did relocate my battery to make room for the coils, and my car doesn't have ABS, so mounting was super easy due to the wide open spots on the frame rails.
You have a five cylinder SVX?
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  #96  
Old 04-14-2014, 07:45 AM
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Re: $36 Replacement ignition coils?

Lol! No, I HAD a 5-cylinder impreza.

And then I replaced the one bad coil with a summit coil to get back to six. (which is why the one is missing).

And then I put the rest of the coils on when the single coil worked out well.
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  #97  
Old 01-26-2015, 09:36 AM
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Re: $36 Replacement ignition coils?

Well...this is odd.

The OEM Subaru ones are now $75, and the Rockauto ones are now $139.

http://parts.bestbuysubaru.com/showA...=0&modelYear=0

Time to buy the other 5...






Quote:
Originally Posted by Stevebsy View Post
I'm not sure if these are something new, but there are replacement OEM style coils available on Rockauto for about $66-70 each. Were these not available before? They have a front, center and rear so you can get the correct wire lengths.

My front drivers side coil is totally dead, I had to drive a couple hours with the injector unplugged to get home. Oddly I think it may be the best mpg I've gotten in some time.

I'm guessing that the coil has been dying for some time, and it's probably not the only one of the six after 21 years of being cooked inside the engine I think I might change all of them soon.



AIRTEX / WELLS Part # 5C1279 {#22433AA290, 88921344, C1062}
Front
Part Image
$65.79

AIRTEX / WELLS Part # 5C1280 {Click Info Link for Alternate/OEM Part Numbers}
Rear
Part Image
$65.79

STANDARD MOTOR PRODUCTS Part # UF224 {#22433AA310, 88921346, E581A} Intermotor
Rear
Part Image
$67.99

AIRTEX / WELLS Part # 5C1278 {#22433AA300, 88921345, C1063}
CENTER
Part Image
$69.79

STANDARD MOTOR PRODUCTS Part # UF234 {#22433AA300, 88921345, E580A} Intermotor
CENTER
Part Image
$70.79

STANDARD MOTOR PRODUCTS Part # UF233 {#22433AA290, 88921344, E579A} Intermotor
Front
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  #98  
Old 05-30-2018, 07:19 PM
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Re: $36 Replacement ignition coils?

Zombie alert!

I did some digging around for an alternate coil, mostly for self amusement, but here's what I found:

https://www.summitracing.com/search/...rder=Ascending

Would any of these work? They have similar primary resistance to the stock coil. Would have to figure out the connectors, but they do seem to be available so you could wire them up nicely...
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  #99  
Old 06-03-2018, 11:37 AM
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Thumbs down Re: $36 Replacement ignition coils?

Quote:
Originally Posted by smc View Post
Ive had no issue with them what so ever. However as oab_au pointed out: "The standard coils have a primary resistance of 0.7 ohms. This means that when the ECU turns the coil on for the dwell period, a primary current of 30 amps will flow, instead of 17 amps. This current is flowed by the Ignitor till the amperage reaches about 4 amps, when the Ignitor holds it at this level till the ECU turns it off to fire the coil, due to the lower primary resistance, it will rise to this level faster, and is held at this amperage for a longer time.

This presents two problems; First the coil or the Ignitor will finally burn out from the extra current. Second, because the coil has on lower primary resistance, the rise time, to build the magnetic field will be faster, and as they donít have a diode in the secondary to prevent the coil from firing, on the field rising, the plug will fire at the start of the dwell period and again at the end, advancing the spark.

If you and going to use different coils, the dwell period of the ECU will have to be reduced to suit the coils primary resistance, and use the diode to protect against firing on the start of the rise time. If they are used with Capacitive Discharge ignition, they can be used without the dwell change and the diode, but the wires will still be trouble."

In other words, try to find a coil that has a primary resistance as close to 0.7 ohms that you can. Otherwise you may run the risk of burning out your ignitor block. My 0.4 ohm coils have not given me any trouble as of yet. But, then again, I dont have a ton of miles on this conversion. Only about 8,000.
This is why I only use OEM for anything electronic. Those thinner coils on aftermarket can't handle that extra amperage (giving you that illusion of better performance) while slowly FRYING the igniter
It'll work for about 5 years until the igniter or a coil goes BUST.
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  #100  
Old 06-03-2018, 12:58 PM
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Re: $36 Replacement ignition coils?

RockAuto has coils at good prices again, $56 or $62 depending on position.
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  #101  
Old 06-03-2018, 11:36 PM
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Re: $36 Replacement ignition coils?

Steve the two types of coils, two wire and three wire. The two wire that we have, has its dwell controlled by the Igniter, so it has to have the same Inductance, as the standard coil.
The three wire coils have the Igniter in the coil, the dwell is controlled by the coil itself, and does not need the igniter. Just have to see tat the trigger from then ECU is the right polarity.
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  #102  
Old 06-04-2018, 12:15 AM
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Re: $36 Replacement ignition coils?

Quote:
Originally Posted by Stevebsy View Post
Zombie alert!

I did some digging around for an alternate coil, mostly for self amusement, but here's what I found:

https://www.summitracing.com/search/...rder=Ascending

Would any of these work? They have similar primary resistance to the stock coil. Would have to figure out the connectors, but they do seem to be available so you could wire them up nicely...
I just looked at those and they have 33,000v and 35,000v (the 4.6 vs the coyote) in one of SMC's reply's he says the stock coils have 36,000v.
So those numbers alone I am thinking the stock one would work better for the car but for sure. also ya I realize this is one old reply lmao
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  #103  
Old 06-04-2018, 03:17 AM
oab_au oab_au is offline
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Re: $36 Replacement ignition coils?

Quote:
Originally Posted by 92 SVX View Post
I just looked at those and they have 33,000v and 35,000v (the 4.6 vs the coyote) in one of SMC's reply's he says the stock coils have 36,000v.
So those numbers alone I am thinking the stock one would work better for the car but for sure. also ya I realize this is one old reply lmao
They have to be Hi Energy coils, those ones aren't, they should be about 56 Kv to 65 Kv.
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