Author Topic: Wiring for Twin 45 set up on KR Mk2  (Read 3879 times)

Offline jdm

  • Just got here
  • *
  • Posts: 5
Wiring for Twin 45 set up on KR Mk2
« on: 25 April 2012, 14:19 »
Planning on running my GTI on twin 45 weber carbs but haven't got a clue were to start with the ignition/wiring side of things

Have the carbs,inlet, linkage ready to bolt on. Going to run a facet post flow pump at the tank to an FPR under the bonnet.

Which parts of the loom do I need an how do I set up the ignition? I'm keeping the original ECU in case the carbs idea doesn't work out for me and I want to go back to injection.

Any help would be appreciated as I'm a bit of a novice. Will probably have more questions as I go along.. :smiley:

Offline molegti

  • Here all the time
  • ****
  • Posts: 352
Re: Wiring for Twin 45 set up on KR Mk2
« Reply #1 on: 25 April 2012, 16:17 »
I'd imagine much of whats there would be of no use. I ran a Ford Zetec engine on bike carbs and used a custom manifold and bike fuel pump for the fuelling, your existing one will be too high pressure. Ignition may still work on the KR but not sure. Look into Ford EDIS and megajolt if it can't.

I'd also suspect you wont gain anything in power and use more fuel. I'd expect most of the advice from here to be not to do it.
« Last Edit: 25 April 2012, 16:31 by molegti »

Offline danny_p

  • Forum addict
  • *
  • Posts: 4,646
Re: Wiring for Twin 45 set up on KR Mk2
« Reply #2 on: 25 April 2012, 20:16 »
use the original ecu and loom   it can be made to work ith littel effort
all the VW's have gone bar 1.

Offline jdm

  • Just got here
  • *
  • Posts: 5
Re: Wiring for Twin 45 set up on KR Mk2
« Reply #3 on: 25 April 2012, 22:56 »
I'd imagine much of whats there would be of no use. I ran a Ford Zetec engine on bike carbs and used a custom manifold and bike fuel pump for the fuelling, your existing one will be too high pressure. Ignition may still work on the KR but not sure. Look into Ford EDIS and megajolt if it can't.

I'd also suspect you wont gain anything in power and use more fuel. I'd expect most of the advice from here to be not to do it.
use the original ecu and loom   it can be made to work ith littel effort


Not really doing it for huge power increases, more for the throttle response, sound and engine bay aesthetics and not bothered about fuel as its not my daily. I have read that the original ECU and loom can be used with little effort but I really need an idiots guide on how to do it  :grin: What wires go where and what's needed, what's not...?.? Can't find too much info..

Offline mk2bal

  • I live here
  • *****
  • Posts: 811
Re: Wiring for Twin 45 set up on KR Mk2
« Reply #4 on: 26 April 2012, 07:47 »
If you have a 16v already, just leave the ignition side of things alone. Look at it all and you'll figure it out. You don't need to go out and get anything, its all there already?

Offline jdm

  • Just got here
  • *
  • Posts: 5
Re: Wiring for Twin 45 set up on KR Mk2
« Reply #5 on: 27 April 2012, 11:52 »
If you have a 16v already, just leave the ignition side of things alone. Look at it all and you'll figure it out. You don't need to go out and get anything, its all there already?

So what your saying is I bolt on the 45's, connect up the fuel and pump, attach the throttle cables and away I go.

Offline Diamond Hell

  • Serious forum addict
  • *
  • Posts: 7,997
  • Opinions я Us
Re: Wiring for Twin 45 set up on KR Mk2
« Reply #6 on: 27 April 2012, 15:00 »
Yup, with reduced power and economy.

Knock yourself out.
Just because you're offended doesn't make you right.

Holiday cottages on the Isle of Wight for 2-10 people? PM me.

Offline DOA

  • I live here
  • *****
  • Posts: 582
Re: Wiring for Twin 45 set up on KR Mk2
« Reply #7 on: 27 April 2012, 16:12 »
If you have a 16v already, just leave the ignition side of things alone. Look at it all and you'll figure it out. You don't need to go out and get anything, its all there already?

So what your saying is I bolt on the 45's, connect up the fuel and pump, attach the throttle cables and away I go.

Assuming you mean a new fuel pump and pressure regulator suited to carbs then yes, pretty much. Good luck finding someone to set the carbs up, getting to be a bit of a lost art now.

Offline clipperjay

  • I live here
  • *****
  • Posts: 3,150
Re: Wiring for Twin 45 set up on KR Mk2
« Reply #8 on: 27 April 2012, 16:21 »
Seasonal tune changes by the way!
Once in spring
Once in summer
Once in autum and once in winter  :rolleyes:

Offline danny_p

  • Forum addict
  • *
  • Posts: 4,646
Re: Wiring for Twin 45 set up on KR Mk2
« Reply #9 on: 28 April 2012, 00:10 »
i find setting up carbs quite easy on the rare occasions that

A) the carbs arn't f**ked 
B) you have enough or the right jets air correctors and emulsion tubes  to get them to do as you wish. 

so even at work i usally declare that we dont have the bits to set the up or that it's a spectalist "dark art" job   as it saves a lot of hasstel as 95 % of the time you can garantee that to get the damb things to tune up right you need to rebuild them 
all the VW's have gone bar 1.