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C.O.P. or Coil On Plug

 
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Old 19 Nov 2014, 04:59 pm
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Default C.O.P. or Coil On Plug

As everyone knows, engines got away from distributors a few years back.
Now, the trend is to COPs, where there's no plug wire.

Here's a shot for the 2.4, using coils from the popular (in junkyards) Chrysler 2.7:
You will also need to cut & drill a plate to hold the coils in place.

Here's the story:

www.neons.org How to: Coil on plug conversion for the 2.4

This is on an aluminum valve cover, so you'll be the first to do this on a plastic cover.

What's the advantage?! I think appearance is what would most attract PT owners.

There's other COPs, 'pencil' Coils, and 'Smart' coils that are subsets of COPs, such as VW 1.8 coils, they are considered 'Smart' Coils, where the ignitor is in the coil. While you could drive this with ignitors in the the PT's PCM, it is redundant.
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Old 19 Nov 2014, 05:22 pm
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Default Re: C.O.P. or Coil On Plug

Interesrting...
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Old 19 Nov 2014, 06:33 pm
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Default Re: C.O.P. or Coil On Plug

Why do you say "appearance" would attract most owners. I think they are very effective with each cylinder having it's own coil and short plug wire BUT I personally hate the way all the coils on the valve covers look on the 5th, 6th and 7th generation Corvettes. Doesn't look that good on the picture of the 2.4 in your picture.

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Old 19 Nov 2014, 06:49 pm
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Default Re: C.O.P. or Coil On Plug

If it were cleaned up and done neat. Someone might want to have that different look. As always beauty is in the individual's eye. Thanks for the idea.
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Old 19 Nov 2014, 07:23 pm
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Default Re: C.O.P. or Coil On Plug

The conclusions of improved ignition spark kernel or operation are not accurate on the supplied http. There is no real performance advantage to this conversion unless you are going to use improved aftermarket C.O.P.s which are very costly.

Ultimately a better option MSD Digital ignition, Crane HI-6 multi-spark CD ignition, or a PerTronix unit.

It is a good thread and addition to the PT Forum though.
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Last edited by NitroPT; 19 Nov 2014 at 07:26 pm.
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Old 19 Nov 2014, 11:31 pm
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Default Re: C.O.P. or Coil On Plug

Thanks.

Neon people go for (sometimes 'perceived') function first, then appearances.
Here's a nicer looking conversion on the SOHC (PT Export/Mini) engine.







Beauty, eh?
NitroPT likes this.

Last edited by UptownSport; 20 Nov 2014 at 12:01 am.
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Old 20 Nov 2014, 07:55 am
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Default Re: C.O.P. or Coil On Plug

Quote:
Originally Posted by UptownSport View Post
Thanks.

Neon people go for (sometimes 'perceived') function first, then appearances.
Here's a nicer looking conversion on the SOHC (PT Export/Mini) engine.

Beauty, eh?
Now that's better, I will agree but I'm afraid that unless there's a substantial advantage in doing the C.O.P. conversion, the time and money spent would be worthless and hardly ever seen under the upper intake manifold of the current 2.4 ltr PT Cruiser.
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Old 20 Nov 2014, 10:24 am
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Default Re: C.O.P. or Coil On Plug

Quote:
Originally Posted by CREWZIN View Post
Now that's better, I will agree but I'm afraid that unless there's a substantial advantage in doing the C.O.P. conversion, the time and money spent would be worthless and hardly ever seen under the upper intake manifold of the current 2.4 ltr PT Cruiser.


The MSD DIS is a more practical and easier to install ignition upgrade than a C.O.P. for a PT Cruiser with the waste spark ignition system.

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Old 20 Nov 2014, 10:47 am
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Default Re: C.O.P. or Coil On Plug

Quote:
Originally Posted by NitroPT View Post
The MSD DIS is a more practical and easier to install ignition upgrade than a C.O.P. for a PT Cruiser with the waste spark ignition system.

Couldn't make out much on the pic. My eyes are getting to old I guess.
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Old 20 Nov 2014, 11:05 am
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Default Re: C.O.P. or Coil On Plug

Quote:
Originally Posted by CREWZIN View Post
Now that's better, I will agree but I'm afraid that unless there's a substantial advantage in doing the C.O.P. conversion, the time and money spent would be worthless and hardly ever seen under the upper intake manifold of the current 2.4 ltr PT Cruiser.
I agree.
Wire loom is MUCH cheaper.
From what I understand, the stock ignition in good repair is quite satisfactory, not leaving a lot of room for improvement.
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