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Old 10-01-2012, 06:44 PM   #1
pcwirepro OP
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Stick coil question

So I "know" a guy that bought an '04 1150GS (dual-spark) a few months ago. He's been pulling his hair out since he bought it thinking that something just wasn't right. Or so I've been told.... New plugs, TB rebuild, injector cleaner, injector soak, throttle cables, 3x valve adjustment, 4-5x TB sync all with little to no improvement. Today while driving home from work he remembers reading a thread about testing stick coils by pulling one or the other. Well as it turns out one is dead. Moved it to the other side (he did that is) to confirm and the trouble moved with the coil.
So... how much improvement can he expect to see from a new coil or set of coils? Is performance affected more at higher RPM's and more noticeable under load as opposed to no load? Is BB the best (read cheapest) option for these?

Thanks for your input. I'll pass on any and all of your comments.

pcwirepro screwed with this post 10-03-2012 at 11:28 AM
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Old 10-01-2012, 07:41 PM   #2
SR1
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A. Shit. Load. DAMHIK



What is this? "BB"
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Old 10-01-2012, 07:42 PM   #3
Adventure Trio
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A. Shit. Load. DAMHIK.
+1

Experienced this myself.

-Terry
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Old 10-01-2012, 07:45 PM   #4
def
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Think about this....a two cylinder boxer running on only one cylinder?

You make the call.
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Old 10-01-2012, 07:48 PM   #5
SR1
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ahh, beemer boneyard. if the have them. might need to order through max like i did
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Old 10-01-2012, 07:50 PM   #6
pcwirepro OP
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Cry Ouch

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ahh, beemer boneyard. if the have them. might need to order through max like i did
$130/ea. at Max.
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Old 10-01-2012, 07:44 PM   #7
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No Beemer Boneyard?

Too late to call and can't find them on their site. Hmmm.
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Old 10-01-2012, 07:45 PM   #8
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night and day. during heavier acceleration above 4000 rpm, 3rd gear and up the bike will actually run rather than crap out
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Old 10-01-2012, 07:49 PM   #9
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Secondary plug contributes?

Surely it isn't running on one cylinder if the secondary plug is firing. Could this have done damage over 2k miles?
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Old 10-01-2012, 08:21 PM   #10
def
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Originally Posted by pcwirepro View Post
Surely it isn't running on one cylinder if the secondary plug is firing. Could this have done damage over 2k miles?
One cylinder's contribution to performance and power is severely compromised. You might as well be riding a 500cc thumper.

As for damage, I can't say.
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Old 10-01-2012, 08:54 PM   #11
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here ya go....

http://www.advrider.com/forums/showt...ght=stick+coil

by the way, Hacky is a top rider & we need to send him to South America to compete in the BMW challenge

http://www.advrider.com/forums/showthread.php?t=830908


EDIT.... ha.... Scooter ya beat me to it
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Old 10-01-2012, 08:53 PM   #12
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Try this, click here $80 two coils.


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Originally Posted by HackyMoto View Post


Am fortunate to have two GSís aí 04 1150 36k and a í06 1150 adv 47k both twin spark. Both started running ruff dropping a couple hundred rpmís at idle and missing under load. The coil sticks (one each) on both bikeís went bad within a couple weeks so thatís 2 timeís 140.00 or 4 timeís if oneís to replace them all. I didnít want to go back to the coil sticks because of the fail rate and the price so I started thinking what kind of alternative action I could take. I wanted a coil that was small available everyware and (cheep) (inexpensive) reasonably priced, I found it 1999- to present 5.4 Ford F-150Ďs C.O.P. coils checked the specs (Ohms) close enough and at 30 bucks each itís worth a try.
Pick-up two coils from the parts house and a wire harness from a ford 5.4 at the auto recyclers for the connectors on the coils. Plug wires Iíve had laying around.
I didnít want to cut the bikes wiring in case I wanted to ever go back to the stick coils, so I got four sub-d connectors that fit right into the bikes coil connectors.
Hook it up and Iíve got spark
The coil are zippy tied to the frame for now if this works out Iíll mount them-up this winter.






Got about 200 miles so far allís well.
2 coils 60.00
Wire harness 10.00
Sub-d connectors 2.00
Plug wires ????
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Old 10-01-2012, 09:03 PM   #13
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Google stick coil for motorcycle under shopping. Japanese bike coils inexpensive. Find one similar to BMW.

stick coil for motorcycle
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Old 10-02-2012, 04:22 AM   #14
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Interesting

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Originally Posted by scooteraug02 View Post
Google stick coil for motorcycle under shopping. Japanese bike coils inexpensive. Find one similar to BMW.

stick coil for motorcycle
I see similarities there. Has anyone done this successfully?
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Old 10-02-2012, 05:55 AM   #15
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I liked the idea of the ford stick coils but didn't have time to hack around with the wiring. You can save a few bucks that way no doubt and some enterprising soul will make a million selling them. In the end though I bought a pair from Max, took a week to deliver and didn't get any m&ms either. Replaced the bad one and will pack the other one on trips just in case.

Mine went out without warning and missed badly under load. Have a sneaking suspicion that since it was on the left side
and using the sidestand a lot that maybe corrosion from water runoff might be the cause, but everytime I try to disassemble the old coil it just breaks.

One coil stick at 120k miles is an acceptable fail rate.
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