Author Topic: Coil On plug retrofit (Read 25948 times)

dino245 · « **on:** March 10, 2006, 09:24:03 AM »

I am working on replacing the stock ignition coils with a COP (Coil On Plug) set up using coils from a VW/Audi 1.8t. I will take some pictures at the time I install them and post some part numbers.

The advantage of this is reducing the possibility of crossfiring of the high tension leads and reducing the complexity of the engine bay, especialy if you are boosting and would like the extra space on that side.

The coils were under a recall at the dealership and a friend of mine who repairs VW/Audi cars has a pile of these coils and some may fail but some may still last a while. There is a new "updated" part available for around 50-60 bones and will fit in the ignition holes of our valve covers. I will keep yall uptodate as I make progress.

bmwman91 · « **Reply #1 on:** March 10, 2006, 10:41:25 AM »

Nice! If you can get me some part #'s and dimensions I might be able to help out designing a mounting bracket for this.

asubimmer · « **Reply #2 on:** March 10, 2006, 11:06:18 AM »

Quote from: dino245

The advantage of this is reducing the possibility of crossfiring of the high tension leads and reducing the complexity of the engine bay, especialy if you are boosting and would like the extra space on that side.

great...thats what I was thinking when I read the title

Keep us updated!!

e9nine · « **Reply #3 on:** March 11, 2006, 10:14:42 PM »

..interesting mission! The coils are not that expensive. My buddy's 1.8T GTi has been through 3 of them or so. What plans do you have for the wiring harness and how will you keep them covered (if at all)?

kowalski · « **Reply #4 on:** March 12, 2006, 07:23:08 PM »

what kind of gains are you expecting out of this?

dino245 · « **Reply #5 on:** March 13, 2006, 08:47:02 AM »

I am not focused on any hp gains for this, I am looking to siplify the engine bay, remove some of the clutter. I am using a section off of a stock harness from a 1.8t jetta that I sourced when I worked for the VW dealer. The part number for the coils is 06b 905 115h. You want the latest version of these which will have a higher order of letter such as j,kl,m,n of what ever they are up to. Also there are a few chiniese companies making knock off versions of these for cheaper than fatory. The connector plug which out the connector pins is available from the dealer and is part number 1j0 973 724. If you go to a repudable dealer they can also find the connector pins that fit in these connectors.

I have yet to hook these up and may not be able to since I might have to move out of the country, I wont know until the end of March and then I will have to sell my car with allof the stuff on it. I will keep you posted.

kowalski · « **Reply #6 on:** March 14, 2006, 12:04:02 AM »

Quote from: dino245

I am not focused on any hp gains for this, I am looking to siplify the engine bay, remove some of the clutter. I am using a section off of a stock harness from a 1.8t jetta that I sourced when I worked for the VW dealer. The part number for the coils is 06b 905 115h. You want the latest version of these which will have a higher order of letter such as j,kl,m,n of what ever they are up to. Also there are a few chiniese companies making knock off versions of these for cheaper than fatory. The connector plug which out the connector pins is available from the dealer and is part number 1j0 973 724. If you go to a repudable dealer they can also find the connector pins that fit in these connectors.

I have yet to hook these up and may not be able to since I might have to move out of the country, I wont know until the end of March and then I will have to sell my car with allof the stuff on it. I will keep you posted.

why'r you gona have to take off?

and how much is this gona cost?

Zoso · « **Reply #7 on:** March 14, 2006, 10:06:09 AM »

I've never had to mess with this part of my car before so I'm not 100% sure how this connects... but if you replace the coil packs with VW ones, will there be any issues connecting to the ignition/timing outputs from the computer?

Stuff like this gets my engineering part of my brain tingling. I get scared that the VW coil packs may have different specifications than the
stock ones. What I don't know scares me... and when I don't know even what the specification catagories are, I get scared even more.

dino245 · « **Reply #8 on:** March 14, 2006, 12:52:26 PM »

Zoso
I understand what you meen, we are blessed to have a DME that just modern enough to have one ignition coil per cyl. and not a dustributor like the S14 or the other older engines.

When you look at the ignition coils on your car there is more there than just a coil, there is also a switching transistor which is breaking the connection of the power supply and letting the engergized coil collaps and thus produce the voltage spike that ultimatly goes to ground through your spark plug. This switching component is also in the end of the coil and requires and aditional ground wire instead of grounding through the case like the stock ignition coil. Look at this diagram I found which explanes the internal diagram of the coil.

bm318ist · « **Reply #9 on:** March 14, 2006, 03:10:35 PM »

what's up guys,i'm new in the club ,but i have done many things to my car !i would like to help you guys with my knowledge if i can! as far as the coils on the plugs go,I took e-36 m3 coils popped em on and plugged them in.you have to cut open the factory loom in order for the wires to extend!then re-loom them.making a hold down bracket is the trickiest part!you also have to grind the mounting holes a little to fit them securely in the valve cover.And yes you will feel a difference in throttle response!!!!!!!

dino245 · « **Reply #10 on:** March 14, 2006, 03:30:50 PM »

I would like to see pictures

2002maniac · « **Reply #11 on:** March 14, 2006, 03:36:45 PM »

vw parts scare me :p My GTi was an electrical nightmare...

kowalski · « **Reply #12 on:** March 14, 2006, 06:56:33 PM »

Quote from: bm318ist

what's up guys,i'm new in the club ,but i have done many things to my car !i would like to help you guys with my knowledge if i can! as far as the coils on the plugs go,I took e-36 m3 coils popped em on and plugged them in.you have to cut open the factory loom in order for the wires to extend!then re-loom them.making a hold down bracket is the trickiest part!you also have to grind the mounting holes a little to fit them securely in the valve cover.And yes you will feel a difference in throttle response!!!!!!!

PICS! email what you have to kroeker.michael@gmail dot com

asubimmer · « **Reply #13 on:** March 14, 2006, 06:59:58 PM »

how bout host them so we can all see

bm318ist · « **Reply #14 on:** March 16, 2006, 07:37:07 PM »

hey guys i am trying to get the pictures for everyone to see! so bear with me , but whatever questions you guys have i will try to answer!