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Coil on plug advantage


mooserage
New Title
254/2000


Galant VR-4 org Post #: 349816 posted 06/15/06 12:42 AM     Remind Me!  Send Private Message   Edit Post      
What are the advantages of a coil on plug setup?
Besides the c.o.p. setup what else do you need?(i.e. new ignitor?)
Thanks for helping a nub.



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boostx
On The Wrong Side.
23/2000



Galant VR-4 org Post #: 349832 posted 06/15/06 05:55 AM     Remind Me!  Send Private Message   Edit Post      
thats all you need , when i did mine the car idles and rev much smoother.
Mines is for sale , (getting a deal on a GT35r)

my cop setup



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Edited by Boostx (06/15/06 05:59 AM)

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mooserage
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254/2000


Galant VR-4 org Post #: 349927 posted 06/15/06 11:21 AM     Remind Me!  Send Private Message   Edit Post      
so, sorry, but just so I am clear: you just need a new ignitior and the plug setup? you don't need to change anything with the the ECU?

Also real quick, so what are the advantages though? Would the setup give a better spark?



-254/2000 Summit White DD (aka "The Yeti")

The Yeti loves winter and hates me.

-ムースライジュ

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boostx
On The Wrong Side.
23/2000



Galant VR-4 org Post #: 350036 posted 06/15/06 02:59 PM     Remind Me!  Send Private Message   Edit Post      
when i did mine i did not get a new ignitior, i just unplug my coil and plug in the the cop setup



Love the F Letter
Four wheel steering
Four doors
Four cylinders
Force induced
><((((º>

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mooserage
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254/2000


Galant VR-4 org Post #: 350150 posted 06/15/06 08:52 PM     Remind Me!  Send Private Message   Edit Post      
Oh wow, ok, so then I guess now I just am curious, why should I change to that setup?



-254/2000 Summit White DD (aka "The Yeti")

The Yeti loves winter and hates me.

-ムースライジュ

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JNR
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Galant VR-4 org Post #: 350166 posted 06/15/06 09:41 PM     Remind Me!  Send Private Message   Edit Post      
The coils being right on the plug, give you less chance of electrical loss and I would *think* 4 individual coils would work in a stronger (in general), consistent spark than one, splitting into (4), even with our waste spark setup (fires on alternate cylinder, even when not needed; 1-4, 2-3, IIRC).

You only need the coils, a way to mount them and wire them up, per Curtis' diagram (I posted one of his here somewhere) and that's it. The signal travels the same, except it gets 'split' into the pertaining pair of coils, similar to the way the oem did, but with no spark plug wires (now uses a spring instad between coil and plug).

I can say they work great, As a power adder by itself, maybe not so much, but it just gives a better driveability factor that enhances modifications moreso, imo.

Also, you can use the mating connector from a spare coil and add this to your harness for a 'plug and play' solution (I think Iceman sells these?)...I just need to pick up the (Dodge) OEM coil harnesses one of these days (I made my own for now, but want to do it right soon).

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JNR
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Galant VR-4 org Post #: 350171 posted 06/15/06 09:47 PM     Remind Me!  Send Private Message   Edit Post      
Here's the wiring diagram, fwiw:


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mooserage
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254/2000


Galant VR-4 org Post #: 350217 posted 06/16/06 12:01 AM     Remind Me!  Send Private Message   Edit Post      
awesome information thanks a lot you guys



-254/2000 Summit White DD (aka "The Yeti")

The Yeti loves winter and hates me.

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ken inn
BJ Titsengolf lifer


Galant VR-4 org Post #: 350250 posted 06/16/06 06:59 AM     Remind Me!  Send Private Message   Edit Post      
cop systems keep people like me eating. we sell the crap out of coils. bmw is replacing them like there is no tomorrow. couple of months ago, one dealer up north ordered a whole PALLET of replacement coils. used to be i would sell hi tension wire sets, and a coil now and then. i've already replaced a set on the mazda(174.00 EACH!! kaff, kaff), and they are a sumbitch to get at. of course, AFTER i replace them, i find a complete set on ebay for 20 bucks.
heat is the enemy of the coil. after that, but a close second, is oil contamination. it shorts the coil to ground, which makes it hot, then you got reason #1. in some of the bmw systems, if a couple of coils short out, it can take out the final stage drivers in the dme(ecu), AND the abs control unit. about 3500 bucks. ka-CHING, ka-CHING. they seem to be VERY sensitive to ground problems.



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gvr4579
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Galant VR-4 org Post #: 350283 posted 06/16/06 09:09 AM     Remind Me!  Send Private Message   Edit Post      
but remember most of us are using intrepid coils and there was a post from a dodge/chrysler mechanic saying how he had only replaced a handful in his whole life as a mechanic, so these ones must not be that bad but i do agree oil is bad for rubber things under your hood

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Hertz Galant VR4.org Administrator
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Galant VR-4 org Post #: 350287 posted 06/16/06 09:32 AM     Remind Me!  Send Private Message   Edit Post      
But also remember that our cars produce much more heat than the ones that the coils came off of.



Ryan Hertz

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Galant VR-4 org Post #: 350303 posted 06/16/06 11:08 AM     Remind Me!  Send Private Message   Edit Post      
i heard this from someone but i don't know if its true or not:

1. you can not set your timing with the COP because there are no spark plug cables to hook the timing gun to.

2. COP might screw the ECU (burn it, fry it, whatever you want to call it).



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Tom_N
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Galant VR-4 org Post #: 350305 posted 06/16/06 11:19 AM     Remind Me!  Send Private Message   Edit Post      
Quote:

i heard this from someone but i don't know if its true or not:

1. you can not set your timing with the COP because there are no spark plug cables to hook the timing gun to.

2. COP might screw the ECU (burn it, fry it, whatever you want to call it).





Both of those are incorrect.

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atc250r Galant VR4.org Moderator
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Galant VR-4 org Post #: 350331 posted 06/16/06 12:29 PM     Remind Me!  Send Private Message   Edit Post      
1. With a Snap On timing light you can usually lay the pickup on top of the #1 coil and get a signal to set the timing. I heard you can put the negative wire that goes to the coil inside the pickup that the spark plug wire would normally go into and get a signal that way too.

2. The Igniter is in between the ECU and the COP set up so the coils can not damage the ECU. They could probably damage the igniter but not the ECU.

John



"...if they're so into masochism, they should just really go all out and start modifying Mitsubishis. And using them as daily drivers." - Mike R.

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dsm_drew
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Galant VR-4 org Post #: 350453 posted 06/16/06 06:07 PM     Remind Me!  Send Private Message   Edit Post      
The COP coils for most cars are very reliable. Some manufacturers, especially Ford, use crap coils to begin with so they're constantly being replaced.

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Mark
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Galant VR-4 org Post #: 350507 posted 06/16/06 09:15 PM     Remind Me!  Send Private Message   Edit Post      
I plan on using mine with the msd setup.

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spooling92vr4
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Galant VR-4 org Post #: 350528 posted 06/16/06 10:22 PM     Remind Me!  Send Private Message   Edit Post      
i tried mine in my daily driver after i wired it up.. the car deffinately idled alot smoother etc.. and i think there is a specific thing you can buy from snap on to set ignition timing with a cop.. worst case travel with a coil and some wires when you go to the track



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gvr4579
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Galant VR-4 org Post #: 350534 posted 06/16/06 10:49 PM     Remind Me!  Send Private Message   Edit Post      
or you can just take out the #1 coil and put a plugwire in between it and the coil to clip onto for a signal no problems with mine yet since i put it in, good luck if you decide to go with it

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89coltgt
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Galant VR-4 org Post #: 350546 posted 06/17/06 12:55 AM     Remind Me!  Send Private Message   Edit Post      
Great info, I think I may take a visit to the j-yard and look for the coils. Is there any certain year to look for or pretty much any coil off of the newer Chrysler products?



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V8EATER
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Galant VR-4 org Post #: 350548 posted 06/17/06 01:07 AM     Remind Me!  Send Private Message   Edit Post      
99 and up chrysler intrepids, lhs, concorde etc with the 2.7l and 3.5l motors.



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acbc
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Galant VR-4 org Post #: 350573 posted 06/17/06 07:28 AM     Remind Me!  Send Private Message   Edit Post      
What other COP can I use? I'm looking to make one for my VR4 using parts from any JDM engine. Saw some on BMW engines, do these work well?

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atc250r Galant VR4.org Moderator
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Galant VR-4 org Post #: 350575 posted 06/17/06 07:32 AM     Remind Me!  Send Private Message   Edit Post      
I'm working on getting my NSX coils to work right. They fit very well and the older Acura 3.5 RL's have the same coil. The best part is there is an emissions update that the EPA made Honda/Acura do as a "punishment" for putting the OBD2 connector in the wrong place so I've got a bunch of them here but I won't sell them until I figure out why mine runs like crap under boost with them.

John



"...if they're so into masochism, they should just really go all out and start modifying Mitsubishis. And using them as daily drivers." - Mike R.

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dsm_drew
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Galant VR-4 org Post #: 350825 posted 06/18/06 09:42 AM     Remind Me!  Send Private Message   Edit Post      
There are a lot of Toyotas that use Denso COP coils too.

Btw, the Intrepid coils are made by Denso also.

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acbc
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Galant VR-4 org Post #: 350835 posted 06/18/06 10:29 AM     Remind Me!  Send Private Message   Edit Post      
Which model of Toyota? Is it the Camry or Lexus?

I found an old Honda V6 engine lying around at my mech's place... found some COPs. Will take one out for sample.

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dsm_drew
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Galant VR-4 org Post #: 350917 posted 06/18/06 03:33 PM     Remind Me!  Send Private Message   Edit Post   
95 up Camry IIRC, Lexus, and some others. I'd have to look them up again.

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