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Installing aftermarket coils on the ACE
Old 06-02-2015, 09:10 AM   #1
bob_suruncle
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Installing aftermarket coils on the ACE

This is so simple it really does not need a "how to" but it seemed the most appropriate place to put this.

A wise man (McV) once told me "buy the best parts you can afford" so when I started having coil issues I asked for some advice on what was the best option for replacements. Bald Eagle pointed me to TJ Stiles and Dynatek products. TJ pointed me in the right direction and Dynatek provided me with the right part numbers for my bike (and most other 750 shadows).

I ended up purchasing this set on ebay:



Set includes two 3ohm dual output coils, right angle and straight plug boots/connectors, 4 right angle female spade connectors and 4 straight female spades.

Our stock coils have a threaded stud down in the center that the plug wire actually threads onto but the new coils have a nib like the top of a spark plug so you must crimp on connectors to your existing wires (note: great time to upgrade you wires and Dynatek makes those too).

Start by stripping back about 3/4" of plug wire, twist it and fold back as pictured





STOP!!! I almost goofed!! put the rubber boot for the selected connector on the wire first before you install the new connector!! ( a bit of spit helps lube up the wire to get the boot on.... eeewwwww)

Place the new end on the wire and carefully crimp in solidly in place. Pull the boot down over the connector and you are done.



I used right angle connectors and boots on the rear cylinder coil and straight ones on the front coil.
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Last edited by bob_suruncle : 06-03-2015 at 12:55 PM.
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Old 06-02-2015, 09:14 AM   #2
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Mount up your coils... for this you will need about 1/4" longer bolts to allow for the thicker mounting tabs on the dynas. Luckily the new coils mount in the stock location with no modifications other than the longer bolts:

Front coil mounted



Rear coil mounted



Now plug everything in! I used the stock spade connectors from the bikes wiring harness. Instructions say to be careful about polarity when you hook up the wires as reversing can reduce spark intensity. Positive connection is marked with a red dot.

Button it all up and go for a ride!

I installed a new battery at the same time and seat of the pants dyno tells me she accelerates smoother and I have better throttle response

Enjoy!
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Old 06-02-2015, 02:59 PM   #3
gb6049
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I wonder if this would help with the erratic tach signal I get with my SpeedHut gauge? Going to bid/ make an offer on some now on eBay for $50.

Last edited by gb6049 : 06-02-2015 at 03:07 PM.
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Old 06-03-2015, 08:31 AM   #4
bob_suruncle
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If you get em for $50 I will be very jealous! :)
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Old 06-03-2015, 08:49 AM   #5
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$50 plus $15 for shipping. New in box per the add, he bought em but found out it was not the coils, never installed them; been sitting on a shelf. At $50 or Best offer, I just gave what he was asking the amount was so low. ��

Now to find some wires! ����
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Old 06-03-2015, 10:34 AM   #6
bob_suruncle
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Great deal!!
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Old 06-03-2015, 11:43 AM   #7
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Well thanks go to you for posting this. I just looked yesterday and they were added to eBay only 2 days ago. If not for you I never would have considered replacing the coils.
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Old 06-11-2015, 05:19 PM   #8
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So are either of you knuckleheads going to give us an update on performance?
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www.baldeaglecustoms.com

Then the prophet Isaiah called on the LORD, and the LORD made the
SHADOW... 2 Kings 20:11
Okay, I know it's a little out of context, but still we have proof that God cr
eated the Shadow!!!

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Old 06-11-2015, 05:46 PM   #9
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Mine are supposed to be delivered on Friday. They hit the APO sort on Wednesday so I hope they hit my box tomorrow at the mailroom. If so they will get installed this weekend.
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Old 06-12-2015, 09:07 AM   #10
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Quote:
Originally Posted by BaldEagle
So are either of you knuckleheads going to give us an update on performance?
LOL... At least my knucklehead has hair on it.

So I notice a bit more pep.... not like the 4 degree timing mod but the bike just seems a bit stronger with better throttle response. Is it a must do mod?? I wouldnt go that far; but if you are looking at replacing coils I would by the dynas over stock any day!
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