C.O.P. conversion - Ford Focus Forum, Ford Focus ST Forum
Ford Focus Forum
HomeContact UsAbout UsGalleryDiscussion ForumsMarketplace


Go Back   Ford Focus Forum, Ford Focus ST Forum > Ford Focus SVT > SVT Performance (2002-2004)

SVT Performance (2002-2004) The place to chat about any 2.0L SVT DOHC Zetec engine performance, tuning and exhaust related upgrades.

Search This Forum | Image Search | Advanced Search    
Ford Focus Tire & Wheels FocusFanatics Merchandise

Reply
 
Thread Tools Display Modes
Old 12-14-2011, 08:51 PM   #1
djohn
Focus Enthusiast
 
djohn's Avatar
 
Join Date: Mar 2011
Fan#: 83702
Location: mooresville, IN
What I Drive: 03 pitch black svt focus

Posts: 133
FF Reputation: 1 djohn Good Standing Member
Buy-Sell-Trade Rating: (6)
C.O.P. conversion

Hey everyone. Im gettin ready to do a coil on plug conversion on my car. (just so everyone knows, im doing this to clean up the engine compartment. not for any hint of performance. I cant find a quality coil cover from anywhere.) I have a coil to use for the connector, four coils, four connectors, and wiring. the only question I have is is there suppose to be a resistor or capacitor somewhere in the harness that im about to make? I have looked at multiple schematics and posts on this conversion but none mention this. Thanks in advance for all the help. Later.


__________________
Attended and Enjoyed FF '11
Attended and Enjoyed SiF '12
Attended and Enjoyed FF '14
djohn is offline  
    Reply With Quote
Old 12-15-2011, 02:00 AM   #2
iminhell
C2H5OH
 
iminhell's Avatar
 
Join Date: Jun 2006
Fan#: 36222
Location: Darwin, MN
What I Drive: 2000 & 2001 ZX3's

Posts: 10,501
FF Reputation: 48 iminhell Great Standing Member
Buy-Sell-Trade Rating: (4)
Not that I've ever seen, but it would also depend on what coils you're using. So far 300m coils and stock duratec coils work just fine.
I'm running 300m coils and went by the schematic Jay Racing sent me:

__________________
Don't "think outside the box".
There is no box.
Do it correct, or do it twice.
iminhell is offline  
    Reply With Quote
Old 12-15-2011, 10:43 AM   #3
bennyfocus
Focus Enthusiast
 
bennyfocus's Avatar
 
Join Date: Sep 2007
Fan#: 50465
Location: Lock Haven, PA
What I Drive: 2001 Blue Zx3

Posts: 156
FF Reputation: 6 bennyfocus Good Standing Member
Buy-Sell-Trade Rating: (2)
Ya as long as you use the chrysler coils and wire it like in that picture you're fine the ohms stay exactly the same as a stock coil that way and you're not adding any stress to your coil driver circuit. The only draw back to performance is at high rev or under heavy cylinder load such as forced induction or high compression they can't keep up the same w ay the stock coil will however that can easily be overcome with the addition of an msd box if you ever need it.
bennyfocus is offline  
    Reply With Quote
Old 12-15-2011, 02:55 PM   #4
iminhell
C2H5OH
 
iminhell's Avatar
 
Join Date: Jun 2006
Fan#: 36222
Location: Darwin, MN
What I Drive: 2000 & 2001 ZX3's

Posts: 10,501
FF Reputation: 48 iminhell Great Standing Member
Buy-Sell-Trade Rating: (4)
^You do realize I'm revving to 8,000 rpm and making ~185whp, right?
The 300m coils do just fine, not a single hiccup.
__________________
Don't "think outside the box".
There is no box.
Do it correct, or do it twice.
iminhell is offline  
    Reply With Quote
Old 12-16-2011, 07:10 AM   #5
bennyfocus
Focus Enthusiast
 
bennyfocus's Avatar
 
Join Date: Sep 2007
Fan#: 50465
Location: Lock Haven, PA
What I Drive: 2001 Blue Zx3

Posts: 156
FF Reputation: 6 bennyfocus Good Standing Member
Buy-Sell-Trade Rating: (2)
OP check here for a coil plate. http://www.jayracing.com/index.php?m...roducts_id=189

You may need to call him and see if he can make one for you as he is currently out of stock. Also I know you dont care about performance nor should you this system will work fine for you so I apology for the long post I'm about to make but I feel I need to clarify my other statement.

Our systems are waste spark, 1 coil pack contains 2 coils and each side must charge and discharge twice per revolution. When you go COP you are now adding an extra coil to each side of the circuit which means you must fully charge and discharge 2 coils on the same circuit in the same amount of time in which the system was designed to charge 1. If you add high cylinder pressure from forced induction or high compression and the coil is not fully charged you will get a misfire if the spark is not strong enough to arc the plug gap.

(Corrected by Mike_Mac)
Keep in mind that in this system your coils will be firing at the same rate of RPM so at 6,000 rpm you need to fully charge and discharge 2 coils at the rate of 6,000 sparks per minute the same way you were originally charging 1.

In my opinion its easy to see how you could not fully charge these coils in performance applications to the point where they could cause a loss in power rather than a gain, and I have seen it stated on here before the cop is not recomended as people have had bad experience with it in such situations.

Now I'm not saying everything I stated is 100% correct or true, however I feel with a basic understanding of how things work you can see easily how this system can have its faults. I personally run a JayRacing plate with 300m coils and an MSD box. People can take my advice or not take it at the end of the day all my cars run great so it has no affect on me. All I'm saying is in the years i have been on this forum I have seen people say not to use cop and I'm just pointing out the obvious faults in the system.

<rant>Dont think that just because I have a low post count I'm an idiot I just dont like to debate stuff like this over the internet because any helpful insight I ever try to post is almost always drown out by people who have a suggestion from someone who had a similar problem on their wifes friends brothers car that was doing something different but hey it could apply to your situation so why not throw some parts instead of doing it right.</rant>

If anything I posted is wrong, please prove me wrong and I will delete everything in this post as I dont want to contribute to the misinformation that is all over these fourms.

Quote:
Originally Posted by iminhell View Post
^You do realize I'm revving to 8,000 rpm and making ~185whp, right?
The 300m coils do just fine, not a single hiccup.

Last edited by bennyfocus; 12-16-2011 at 08:12 AM. Reason: Correcting misinformation
bennyfocus is offline  
    Reply With Quote
Old 12-16-2011, 03:20 PM   #6
iminhell
C2H5OH
 
iminhell's Avatar
 
Join Date: Jun 2006
Fan#: 36222
Location: Darwin, MN
What I Drive: 2000 & 2001 ZX3's

Posts: 10,501
FF Reputation: 48 iminhell Great Standing Member
Buy-Sell-Trade Rating: (4)
Quote:
Originally Posted by bennyfocus View Post
<rant>Dont think that just because I have a low post count I'm an idiot I just dont like to debate stuff like this over the internet because any helpful insight I ever try to post is almost always drown out by people who have a suggestion from someone who had a similar problem on their wifes friends brothers car that was doing something different but hey it could apply to your situation so why not throw some parts instead of doing it right.</rant>

If anything I posted is wrong, please prove me wrong and I will delete everything in this post as I dont want to contribute to the misinformation that is all over these fourms.

All I'm saying is that I am providing first hand knowledge. I don't know of many people who can say that, doesn't sound like you are. Just what you've read about the conversion/swap ... and it could very well be that what you've read is from the person I bought my kit from, who had it wired wrong and sold it due to problems. I fixed the wiring errors and it runs perfect.
You always have to read into the problem posts to see if the OP actually understood what they where doing in the first place. Most times they sorta did but took a shortcut and got lost.


I have the kit.
I have had it on the car for ~12,000 miles.
I have tested various spark plugs with it, Mot coppers, NGK's and Autolites. All performed at or better than stock nearest I could tell. Definitely not worse.
__________________
Don't "think outside the box".
There is no box.
Do it correct, or do it twice.
iminhell is offline  
    Reply With Quote
Old 12-15-2011, 05:09 PM   #7
Sniper Focus
Focus Addict
 
Sniper Focus's Avatar
 
Join Date: Mar 2011
Fan#: 84221
Location: IL, IL
What I Drive: '03 SVT EAP "Eurotrish"

Posts: 1,310
FF Reputation: 20 Sniper Focus Great Standing Member
Buy-Sell-Trade Rating: (13)
I think the OP is asking about the EMI or RFI suppressor or whatever it is. There's one screwed on the coil bracket, I think as long as you don't cut that out when you do the COP wiring it should be ok. I thought about doing a COP conversion and it's been awhile since I did the research so don't quote me on it.
__________________
Fox Hound: Liquid Stang - Sniper Focus - Decoy Escort (or was it a Tracer...)
Sniper Focus is offline  
    Reply With Quote
Old 12-15-2011, 06:23 PM   #8
sleepyboy
FF's Night Security
 
sleepyboy's Avatar
 
Join Date: Nov 2004
Fan#: 15335
Location: SW Houston, TX, United States
What I Drive: 01' Yellow ZX3 euro, 04' ZX5 SVT

Posts: 25,282
FF Reputation: 47 sleepyboy Great Standing Member
Buy-Sell-Trade Rating: (11)
Been thinking about this myself. The zetec starts to look real clean once you delete all emission stuff and the coil IMO.
__________________
I started out with nothing and I still have most of it left

Hatch Nation #15 (Ole' Yeller') & #150 (The SVT)
Moderator for
Technical Chat
Zetec Performance Chat
Southern Fanatics Chat
sleepyboy is online now  
    Reply With Quote
Old 12-15-2011, 09:14 PM   #9
djohn
Focus Enthusiast
 
djohn's Avatar
 
Join Date: Mar 2011
Fan#: 83702
Location: mooresville, IN
What I Drive: 03 pitch black svt focus

Posts: 133
FF Reputation: 1 djohn Good Standing Member
Buy-Sell-Trade Rating: (6)
Thanks everyone. I'm using the 2.3L coils from an 04? focus. I do plan on leaving that suppresor thingy next to the coil in tact. just mounted differently. And sleepy, that is totally why im doing this. to make it look clean. On a side note, has anyone looked into the coils on the 3.7L chrysler/dodge V6 to see if they would work as well? I saw one today on a jeep liberty during a tune-up. They are a 2 wire coil that is compact. Thanks again. Later.
__________________
Attended and Enjoyed FF '11
Attended and Enjoyed SiF '12
Attended and Enjoyed FF '14
djohn is offline  
    Reply With Quote
Old 12-15-2011, 09:32 PM   #10
sleepyboy
FF's Night Security
 
sleepyboy's Avatar
 
Join Date: Nov 2004
Fan#: 15335
Location: SW Houston, TX, United States
What I Drive: 01' Yellow ZX3 euro, 04' ZX5 SVT

Posts: 25,282
FF Reputation: 47 sleepyboy Great Standing Member
Buy-Sell-Trade Rating: (11)
Crappy pic but you can see how much space is cleaned up with out the EGR and coil pack there. Never thought about doing it till I had to replaced my coil bracket. It literally opened my eyes to the idea.









You can see the bell housing on the transmission it's so open.
__________________
I started out with nothing and I still have most of it left

Hatch Nation #15 (Ole' Yeller') & #150 (The SVT)
Moderator for
Technical Chat
Zetec Performance Chat
Southern Fanatics Chat
sleepyboy is online now  
    Reply With Quote
Reply

Bookmarks & Social Networks
-->
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 03:48 AM.


Copyright 2002-2014 FocusFanatics.com. All Rights Reserved : Terms of Use : Privacy Policy : Advertise Information

Focus Fanatics Ford Focus Forum offers many fun ways for you to engage with other Ford Focus Owners from across the world. Whether it be about the aftermarket performance modifications, technical how-to's, European tuned suspension or awesome fuel economy similar to the Acura TLX or Fiesta ST. You can find all Ford Focus and Focus ST related information here. Join our Ford Focus discussion forums and chat with local Focus enthusiasts in your area.