ACCEL Ignition Coil Upgrade for 3.0 ltr - Mazda 6 Forums : Mazda 6 Forum / Mazda Atenza Forum
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Old 03-20-2011, 11:08 AM   #1 (permalink)
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Default ACCEL Ignition Coil Upgrade for 3.0 ltr

The following is a cheaper ($40ea Canadian, $25ea in USA) and better upgrade for the Mazda 6 3.0 ignition coil ($100ea Canadian).
Do not attempt this without first adding a proper ground wire from the engine block to the negative battery terminal. Rumour was the Mazda had same ignition as the Mustang. Upon further investigation the Mustang 4V coils (#140034-Accel) have the same polarity but no tie down. I used the 2V ACCEL #140032 Mustang coils which have the exact same tie down. We had to use the original Mazda spark plug boot on the Accel coil. We also reversed wires at connection without splicing.
Accel's 140032 "Super Coil" is designed specifically for Ford 4.6L and 5.4L two valve direct fire modular motors and features a high performance silicone magnetic steel core with optimized windings, resistance, advanced bobbin technology, and a turns ratio that delivers 10 to 15% more energy than the factory Ford Mustang coil. The specialized high temperature epoxy will resist damage from vibration and shock and it increases thermal conductivity. The body and secondary tower of the 140032 is molded in Accel Yellow and contains solid brass secondary contacts. The 140032 coils are direct plug-in replacements for the OEM Ford Mustang coils. The OEM Mazda coil is not as good as the OEM Ford Mustang coil. You will get quicker starts, better idle, improved throttle response, and better spark delivery at high rpm.
Although the "B+" was on the same side for each coil, the connection plugs at the coil are upside down from each other so we had to reverse wire connectors going in to the coil by moving them from one side to the other (this was done without splicing any wires). I have driven 225 km with no issues. I also disconnected the negative terminal on the battery to let the computer re-learn.
For more see attached pictures.
Attached Thumbnails
ACCEL Ignition Coil Upgrade for 3.0 ltr-coilmazda2.jpg   ACCEL Ignition Coil Upgrade for 3.0 ltr-coilmazda3.jpg   ACCEL Ignition Coil Upgrade for 3.0 ltr-coilonengineclosetopview.jpg   ACCEL Ignition Coil Upgrade for 3.0 ltr-coilonenginecloseup.jpg   ACCEL Ignition Coil Upgrade for 3.0 ltr-coilsonengineinstructions.jpg  

ACCEL Ignition Coil Upgrade for 3.0 ltr-coilmazda1top.jpg   ACCEL Ignition Coil Upgrade for 3.0 ltr-coilnewtop1.jpg  

Last edited by BigAlDJ; 04-05-2011 at 07:23 PM.
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Old 03-20-2011, 12:15 PM   #2 (permalink)
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Good find! I might have to get a set of these, looks like an alternative to the Weapon X coils.
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Old 03-20-2011, 01:26 PM   #3 (permalink)
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Thanks for the head's up on these, as well as the work you put into the research.

It's always great to have alternative choices other than stock or WX.
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Old 03-22-2011, 07:24 AM   #4 (permalink)
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how perfectly timed. i just posted a thread on 6crew asking about this. Through my question asking, I was told that we (3.0L 2006) have the 4 valve system which are the Accel 140034, and the Accel 140032 are for the 2 valve system. May that be why the plug had to be reversed?

I know that the 140034 does not have the spot for the bolt hold down, but one can be fabed from some parts at a hardware store.

There has to be a difference beyond the plug needing to be flipped on 140032 vs 140034. I would imagine that the 140034 have more spark because they are for 4 valve (complete shot in the dark)?

Also heard that the NGK TK55's (standard resistor) are the best plug to run with these? The obvious drawback to these plugs is shorter interval changes.

A little searching (wikipedia) revealed that in the at least in the 4.6L Ford applications that the 2V is a SOHC, the 3V is a VCT, and the 4V is a DOHC which is what we have and why the 140034 is the proper one for us?

Just thought I'd throw a few things out to think about. I am REALLY serious about doing this, but wanna make sure:

1. the correct part is installed
2. it's worth the $
3. the cost is worth the gains

thanks
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Old 03-22-2011, 08:53 AM   #5 (permalink)
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Yes, he chose the 2v because they have a tiedown.

proper wiring >tie down I can make from junk in the garage.
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Old 03-22-2011, 08:54 AM   #6 (permalink)
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# of valves does not equate to more power or need for spark. Just differences in design.....
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Old 03-22-2011, 09:00 AM   #7 (permalink)
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BigAIDJ, to get these coils to work you have to reverse the wires on the connector to the coil, turn the connector upside down so it will connect with the coil, then use the stock coil boot on the accel coil , correct?
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Old 03-22-2011, 09:48 AM   #8 (permalink)
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Quote:
Originally Posted by ed4ward1982 View Post
BigAIDJ, to get these coils to work you have to reverse the wires on the connector to the coil, turn the connector upside down so it will connect with the coil, then use the stock coil boot on the accel coil , correct?
YES CORRECT for the 2V coil.

It's either this or make up tie downs for the 4V.
The coil is very hot and I do not know how a made up tie down would stick to it.
Someone who has done 4V needs to show us pics.
If a piece of alum tube is welded to tie down area and bent over, that may work but would be a pain if changing plugs.
All depends on your ingenuity.
I preferred tie downs and was elated when we were able to switch wiring without splicing wires.

Last edited by BigAlDJ; 04-05-2011 at 07:26 PM. Reason: Font readabilty
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Old 03-22-2011, 09:59 AM   #9 (permalink)
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Quote:
Originally Posted by 2SoonJr View Post
how perfectly timed. i just posted a thread on 6crew asking about this. Through my question asking, I was told that we (3.0L 2006) have the 4 valve system which are the Accel 140034, and the Accel 140032 are for the 2 valve system. May that be why the plug had to be reversed?

I know that the 140034 does not have the spot for the bolt hold down, but one can be fabed from some parts at a hardware store.

There has to be a difference beyond the plug needing to be flipped on 140032 vs 140034. I would imagine that the 140034 have more spark because they are for 4 valve (complete shot in the dark)?

Also heard that the NGK TK55's (standard resistor) are the best plug to run with these? The obvious drawback to these plugs is shorter interval changes.

A little searching (wikipedia) revealed that in the at least in the 4.6L Ford applications that the 2V is a SOHC, the 3V is a VCT, and the 4V is a DOHC which is what we have and why the 140034 is the proper one for us?

Just thought I'd throw a few things out to think about. I am REALLY serious about doing this, but wanna make sure:

1. the correct part is installed
2. it's worth the $
3. the cost is worth the gains

thanks
I was informed by the GREAT NY that the Mazda OEM coils are around 20K output, these ACCELS are around 40K (double).
I have driven around 300 km since re-learning with no CEL's. My old coils were not bad or old yet but did not want to wait for one to fail.
I notice so far good idling. It does get up and go, but it did before (see my mods/changes below in signature).
I still have stock pre-cats on and when I floor it for 20-30 seconds (& 180 km/hr) I can really smell and feel the difference in heat as compared to before.

Last edited by BigAlDJ; 04-05-2011 at 07:28 PM.
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Old 03-22-2011, 03:17 PM   #10 (permalink)
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DIY: Weapon-X Ignition Coil Mounting Bracket Fabrication - 6Crew.com Forum

this is what andrew did. I did something similar with 3/4 pipe clamps and some washers.
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