Vn Series 2 Coilpacks In Rb20det - installation guide WITH PICS  

Task - Installing VN external coilpacks to replace the standard RB20det ones

Why - Mainly because its cheaper than buying new/ aftermarket ones. The VN coilpacks also fire 2 cylinders at the same time one to fire a piston and one fires on the exhaust stroke (wasted spark) which helps reduce emmisions without sacrificing power. The VN coilpacks will also produce a spark for a longer time (so im told)

How much - in total after making the bracket and all it cost me $210aus with buying the coilpacks from a holden dealer (u will pick up second had ones MUCH cheaper but risking a failure)

Whats needed - VN coilpacks x 3, Sparkplug leads (get lengths to suit where ur coils will be muonted) Heat Shrink, Electrical Tape, spade plugs crimp (please ensure the right size to fit the coil plugs), corrigated split tube (not essential)

Tools - Pliers, Hex Keys, Screw Driver, spanners/sockets, crimping tool, multimeter silicone(gasket goo or similar). [ Drill, hacksaw, files ] only needed for bracket



WHAT TO DO?

Firstly you will start with undoing the decorative cover in the middle of the block which is undone by some hex keys and a few bolts on the ignighter itself.

Then unplug the whole coilpack loom so its completely out like this


Unbolt the RB coipacks at the brackets so that the whole brackets come out like this


This is how the standard coilpack is set up,


This is wat we want to achieve for each coilpack,

Heres a pic of wat the VN coil looks like



Before making any cuts to the loom its self study it, note the black loop which is also included in cylinder 1 (this is for timing lights) and the earth wire ring, both the timing wire and ground are black, the rest are all colored, pink being the main color, when looking at the seven pin-plug with the locking clip towards you right to left is Ground, cylinder 6, cylinder 5, cylinder 4, cylinder 3, cylinder 2, cylinder 1. cylinder 1 is also connected to the timing wire. You will notice that, coming out of the three pin-plug is a slightly larger white wire this is the power wire to power the coil.

Get a mulitmeter and put one probe on the 7 pin plug end and then probe out each wire and mark it with(use some white tape and a nikko) and work out which cable ends where.

Take apart the whole loom so that u will have no more tape or corrigated tubeing then u will have a big group of wires then arrage all the pink wires together, all the white wires together, all the black wires together, u can cut out 3 of the white wires (only need 3 powers not 6 with the RB setup) same goes with ground but DO NOT CUT OUT black Cylinder 1 cable which is black. It should end up somthing like this,


Then u need to crimp the spade plugs onto the ends of the cables and shrink wrap over the top and these are the ends u should have 3 sets of this
cyl A&B, Power, Ground (power and ground can be in any order as long as each of the 3 coils have one of each)
The cyls are joined in the order of
1 goes with 6
2 goes with 5
3 goes with 4
(cyl 1 is closest to the front of the car and it works back)

Just test the loom with a multimeter to make sure this is achieved correctly

Now u have to make up your bracket to mount the coilpacks onto i went with a kinda difficult setup but its very solid and easy to replace/change parts, and makes it neater. This is how mines is set up


Mount ur bracket on the car, join up the new coilpack loom the the ignighter and power plug and put the spade lugs cyl a&b power into either left or right in each coil doesnt matter as it will work either way and wired should look somthing like this.


Once thats done time to plug the sparkleads onto the cylinders remember to hook them up to the same as how each coil is done so it should be 1&6 on coil 1, 2&5 coil2, 3&4 coil3.


NOW your ready to test it and WALLA if uve done it right ull have ur Rb20DET running with VN series 2 coilpacks, If it runs then use the silicone to seal ur plugs from water and also to help them stay in.

heres mine on and finnished


Problems you might faced and how to fix them,
Spade plugs not staying in? Go shopping and take ur coil with u there are plugs that FIT perfectly in width and length (they should click when deep enough in) then use silicone to keep them in tight and sealed

Not running on all cylinders? check all plugs are in properly

WONT START? make sure everythign is grounded where it should be ESPECIALLY UR IGNIGHTER

Running very rough? make sure u have correct clys wired together and also right leads to the right coils




Thanks guys and good luck HAPPY MODDING!
QUIGGA

Props to
http://www.dsd.co.nz/coils.htm (for the ideas)
Mr foster and Frosty for a big help and tools

This post has been edited by Quigga: Jul 28 2007, 07:08 PM
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