K-Series 1.6 to 1.8 vvc loom question

[garybee]

Currently in our car I have a 1.6 EU3 engine.  I also have a 1.8 EU3 vvc engine and all related parts waiting to be swapped.  My question relates to the two sections of loom that connect to the ECU. 

The first section goes directly to the engine.  Obviously I will need to replace the loom currently in the car with the new one (with a bit of cutting/soldering/butchering etc.).

The second section goes to the 5AS unit/ignition/rest of car.  Can I leave this section alone and just swap out the 5AS module?  Essentially is this section the same on a VVC and non-VVC engine?

Ta muchly

Gary

[Wrightpayne]

You need Revilla who posts on here - he has made a loom up for a VVC engine he has on a frame.

[Peter G]

You need sixspeedmanual, who butchered mine when we did the same, don't ask me what he did as I was traumatised for weeks after. It did run first time though.

Seriously if you have the 5AS that goes with the ECU, then you should be able to swap them over together, I had to get my 5AS matched to the new ECU. As for the wiring, it wasn't too bad, a logical tracing of the wiring on both sub looms is essential. Good luck, it's def worth it.

[garybee]

ECU and 5AS will be staying together as a pair.  I drove the donor home so am happy it all works.  I'm not expecting any issues but just wondered if the loom from ECU to car was different between VVC and non-VVC cars.  Can't see any reason for this bit to have changed but would be nice to have it confirmed.

[revilla]

Did somebody mention my name  ?

I did indeed build a complete VVC loom and as part of doing that I completely reworked the original Caterham wiring diagram. Beware, the original diagram contains numerous errors. The ones I can remember were that the cam sensor wires are show swapped over (the VVC uses a different cam sensor) and wires for the two coil packs are exchanged - wire it up like that and all you get is flames and smoke from the exhaust, which is how I knew there was a problem!

I have Paint.NET project that has a fully reworked and corrected diagram (I know it's pretty much right now because I have built three looms from scratch for quite differently configured engines from the diagram and they all worked fine). The project has all the different options separated out into different layers so you can just switch on and off the bits that you do and don't have. Using that, you can quite easily see the differences between VVC and non-VVC MPi.

Paint.NET is a free download if you don't have it from here.

Drop me a BM and I'll send you what I have. I can save it as JPG images for VVC and MPi if you want so you can just compare them side by side to see the differences if you don't want to play with Paint.NET, but it does make it more obvious.

Andrew

[garybee]

Thank you, PM on it's way imminently

[revilla]

Gary, 

Replied to your PM but with all the attached files the email was rather large (21MB). If you have problems getting it let me know and I'll ZIP the attachments or something.

Andrew.

[James7]

Hi Andrew,

I have also acquired a 1.8 EU3 VVC and am planning to install it where my 2004 1.6 EU3 engine currently sits.

I will drop you a BM if you could also send me the JPG images for VVC and MPi please.

I will be using a local garage who also specialists in motorsport prep to do the engine swap but would like to understand what is involved with the wiring up and brief them accordingly!

Many thanks

James

 

[jackb_ms]

Andrew

Do you know is the EU2 and EU3 loom are the same apart from the coil part?

Can I drop you a mail for a copy of your drawings?

Cheers

Jack

[revilla]

Jack,

EU2 and EU3 wiring was very different, starting with the ECU which was different with different plugs and pinout. I do have diagrams for both, but there is not so much in common between them. My all means PM me your address and I'll send you what I have.

Andrew.

[garybee]

Just a quick update...

The diagrams that Andrew very kindly supplied show very few differences between the VVC and non-VVC EU3 looms.  The connections between the ECU and the 5AS appear to be exactly the same so there should be no reason to mess with that section of the loom.

I have a spare Caterham loom and the looms from the MG  that I pulled the VVC engine from.  I'll probably chop the MG one around to make the new loom, seems a shame to mess with the Caterham one.

Engine is now out and on the stand.  I took the sub-loom, intake, covers etc. off so I can give it a clean prior to dropping it in.  I still haven't decided how far I'm going to strip it yet.  I may just give it a good service and drop it in/hope for the best as they're so easy to remove.  Cursing myself for not doing a compression test whilst it was in the MG.