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  #76  
Old 11-06-2012, 08:09 PM
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Re: $36 Replacement ignition coils?

Quote:
Originally Posted by bishop View Post
Any updates on this? I think my car may be having rough idle because of a weak coil and im doing everything i can before putting money in to a new replacement coil.
No problems noted, and I'm running all 6 now. Cost wise, I did the whole thing for a little bit more than the full price of 1 new coil on plug.
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  #77  
Old 11-12-2012, 12:57 AM
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Re: $36 Replacement ignition coils?

Glad to hear its working out for ya.
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  #78  
Old 12-07-2012, 05:51 PM
shark_22 shark_22 is offline
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Re: $36 Replacement ignition coils?

For the next summer, I want to change all my ignition coil.
I have read this thread and Im not sure which coil is the best(using the car on the track)

who have tried the msd coil?
http://www.summitracing.com/parts/MSD-8226/

that one
http://www.summitracing.com/parts/SUM-850500/

the gm one
http://www.carpartswarehouse.com/add...32-70055.html#

or finally using sti coil and remove my ignitor
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  #79  
Old 12-07-2012, 06:49 PM
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Re: $36 Replacement ignition coils?

If I did it again, I would go with the MSD 8226 coil as it has a ohm rating closer to the stock coil. As was mentioned a bit earlier in the thread, it would be less of a risk to the stock ignitor unit than using a coil of lower ohm rating.
that being said, Im not a huge fan of a multiple spark discharge (msd) coil. Id rather have a single powerful spark than two or three weaker sparks for my ignition source.
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  #80  
Old 12-08-2012, 10:28 AM
shark_22 shark_22 is offline
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Re: $36 Replacement ignition coils?

ok, so you don't have any problem(burn ignitor,...) with you 36$ coil pack?


the thing with the msd 8226 I have to buy the harness for each coil

probably have other model with the same ohm rating than the oem svx one but have to find it

Im gonna check the price of the sti coil at my subaru dealer but it probably gonna be the same price than the svx!
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  #81  
Old 12-08-2012, 10:58 AM
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Re: $36 Replacement ignition coils?

I have this and I can feel a difference in the 3,000 Rpm
http://www.rpmoutlet.com/musv6msdstkr.htm
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  #82  
Old 12-08-2012, 10:58 AM
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Re: $36 Replacement ignition coils?

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 don’t 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.
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  #83  
Old 12-08-2012, 11:02 AM
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Re: $36 Replacement ignition coils?

Quote:
Originally Posted by Conn SVX View Post
I have this and I can feel a difference in the 3,000 Rpm range.
I noticed the same thing. Its not a huge difference over stock, but its a good 'seat of the pants' feel. I also noticed that when the throttle is mashed, the car just feels like its pulling better than stock.
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  #84  
Old 08-05-2013, 01:08 PM
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Re: $36 Replacement ignition coils?

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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  #85  
Old 08-05-2013, 05:24 PM
oab_au oab_au is offline
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Re: $36 Replacement ignition coils?

Steve those coils look to be electrically correct for the car, should be OK.

Harvey.
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  #86  
Old 08-05-2013, 06:03 PM
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Re: $36 Replacement ignition coils?

I figured that they are correct, I had just never seen them mentioned before, and until a couple days ago, never had a need to investigate. I thought the common knowledge was that these were a dealer only item, but maybe I just wasn't paying attention





Quote:
Originally Posted by oab_au View Post
Steve those coils look to be electrically correct for the car, should be OK.

Harvey.
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  #87  
Old 08-05-2013, 06:10 PM
oab_au oab_au is offline
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Re: $36 Replacement ignition coils?

No haven't heard of any being around before, I had to buy one from Suby at $191.00

Harvey.
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  #88  
Old 08-05-2013, 08:20 PM
BackWoodsBob BackWoodsBob is offline
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Re: $36 Replacement ignition coils?

Yeah I saw those on RA the other night while looking up parts for a big brake kit for my subi.
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  #89  
Old 08-09-2013, 02:29 PM
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Re: $36 Replacement ignition coils?

I wonder if you could use four cam 2.5L plug wires, or at least the rubber boots off the ends. They'll fit in the hole and completely seal it against water, probably would not be hard to yank the boots off an old set and put them on the MSD wires, especially if you are using a custom wire set where you have to put the ends on and such... Just my 2 bucks!
I might do this myself since my SVX has a couple of coils where the wires are fraying going into the coil
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  #90  
Old 11-04-2013, 11:55 AM
BRZCory BRZCory is offline
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Re: $36 Replacement ignition coils?

I too am looking for any updates. I had a coil go bad last week, and I've still got a bit of a stumble, so I think another one is on its way out. I'd rather replace all 6 once than keep going one-by-one!
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