COIL ON PLUG setup for the VR4

[king_panther]

Well let me know guys if I can help in any way before I send the Super down there...

 

[TME_Steve]

I asked Mark about it a month or so ago before I changed plugs and he had some vague it didn't work answer, something like, "yeah we looked at that, I didn't think it worked...." Probably worth trying him again but I didn't get the impression he was very interested.

Then I cleaned the coils, changed the plugs to 7's and ran a 0.8 gap, at 18psi of boost it's all good so.... You could always go to a 0.7 gap too....

Still if a setup existed I'd potentially be interested depending on price....

 

[naughtika]

few questions with our oem setup..

I know we have dual coil on plug according to Diamond Electrics (manufacturer of our coilpack) hence we're only using 3.. here's the link

what I want to know is.. do each individual coilpack fire simultaneously? as in coilpacks for cylinder 4 & 1, 2 & 5, 6 & 3 fire at the same time?

also does anyone here have any diagram showing what wire is what leading to the coilpacks?

Im gonna try and make this myself with the help of my dad..

 

[smohekey]

The coil packs fire individually. The only reason its called wasted spark is because one cylinder in each pair wastes a spark when each coil pack fires.

 

[frozen]

Scott, do you mean it sparks on both front and rear banks, but only one has a mixure to be ignited therefore the spark in the other does nothing? i guess that does make sense lol

 

[smohekey]

That's correct. The wasted spark is near the top of the exhaust cycle.

 

[merlin]

Some further info on the coil problem:

There is a siezed VR4 block at MEEKs that I looked at yesterday. The second bank under the manifold does not have any coil mounting points, which rather precludes the fitting of any coils there.

The engines coils and leads were there - the lead set being a Ralliart set, so I measured the resistance of these - typically 650-680 ohms.
This is much lower resistance than you get with a typical commercial plug lead, which is why the Ralliart leads are so good, plus the plug end mouldings are a perfect fit etc.

So, I think the most simple and effective upgrade is:

1. clean your coil packs with alchohol

2. fit new plugs gapped at 0.8mm

3. fit a set of new Ralliart VR4 plug leads

And Chris swears to me they will do the job, and yes he does stock them.

For info, the Ralliart leads are only about 5mm dia and colour blue if you want to check yours.

 

[smohekey]

It might be possible to use two front rocker covers to get around the lack of mounting points on the rear bank. I don't recall if the number of/placement of bolt holes is different, but I think its the same.

 

[mookers]

How do the ICE leads compare to the Ralliart leads?

 

[naughtika]

How do the ICE leads compare to the Ralliart leads?

dunno.. Id assume that the ICE would be better.. thicker doesn't necessary mean better..


also.. COP price for 6 is looking good at this stage..

 

[cyber_scriber]

I understood that it was not about thickness but more about resistance ...

 

[smohekey]

I'm not 100% sure, but I THINK if you're comparing cables of the same chemical makeup, thicker generally means lower resistance.

 

[fieldy107]

Christian any progress on your COP setup?

 

[naughtika]

ok, slight update.. not really a good one and not a bad one either

have sized up some denso coils and non of them fit.. overall diameter of the denso coils themselves are bigger than our spark plug holes.. nothing to worry about though, the guy selling the coils can remove few milimeters off the casing so it'll fit in our engines.. I asked if this would weaken the coils and said it shouldn't cause the cover themselves are pretty thick..

will be coming back within a week or less to trial fit them again and hopefully it does fit so I can take it home and fit it..

 

[naughtika]

can someone please verify if the wiring stated below is correct.. I would like to know if the color coding is the same across Facelift and Prefacelift...

on every ignition coil.. there are 3 wires in every connector..

on Cylinder 2..
White Stripe on Black, Black, White & Green

on Cylinder 4..
White Stripe on Black, Black, Blue Stripe on Black

on Cylinder 6..
White Stripe on Black, Black, Red & Black

I need this info so I can start on my COP harness..

And btw.. most likely this is the style of Denso Ignition Coil that I'm gonna use .. reason for this, if we I use the coil with the flat connector rather than on angle, it'll hit the next coil..

Currently waiting for Anthony (from AE86Drivingclub.com.au) to reply with the modded coils..

Also these are the connectors that he can also supply..

so hopefully by the end of this week I'll have it installed in the car..

 

[unclepaulie]

nice work bro

 

[naughtika]

anyone?

 

[Hotwire]

on Cylinder 2..
White Stripe on Black, Black, White & Green - Coil Pack 2

on Cylinder 4..
White Stripe on Black, Black, Blue Stripe on Black - Coil Pack 1

on Cylinder 6..
White Stripe on Black, Black, Red & Black - Coil Pack 3

The White stripe on Black / Black I'm not sure on, but the control wires to the ECU match up with the PinOut guide for the ECU, although coilpack # seems odd to cylinder location:

http://ozvr4.com/forums/showthread.php?6395-ECU-Pin-Out-Complete-for-VR4

 

[naughtika]

The White stripe on Black / Black I'm not sure on, but the control wires to the ECU match up with the PinOut guide for the ECU, although coilpack # seems odd to cylinder location:

http://ozvr4.com/forums/showthread.php?6395-ECU-Pin-Out-Complete-for-VR4

i was looking for that pinouts..

and thanks

edit.. got it all

 

[Nitephyre]

Hmm, this'll be interesting to see the benefits.