dx to 9a bottom end with kr head and cams

[chrisme85]

hi guys,

I've put a few small posts on here but havent really got my feet under the table, hopefully this will help lol

I have a 1986 scirocco gtx and I am in mid purchase of a 9a engine with a ported kr head with kr cams in,

am i right in thinking that my engine wiring harness should pretty much marry up to the new engine.
and that the only electrical/wiring bits i need will be a KR ECU and TCI and small loom attached to that...(see pic)

Image 1 - Mk2 K-Jet 16V ECU and TCI loom.jpg

Also the engine doesnt come with a metering head. but from reading because its a 9a i want to use the 9a injectors but not the 9a metering head (because i want to run k-jet not ke-jet) as the 1.8 dx metering head will run it but will obviously just need set up... is this correct?

i have read through everything and have downloaded the lot from mk1 golf forum, but my heads a bit baffled and just wanted to check that this is right with someone lol

the mechanical side of things im good with but wiring confuses the hell outta me.... and i promise to start a build thread also...

thanks in advance, Chris

[Bonusrocco]

As regards the wiring i'm in the same boat as you. All I know is its best just to get stuck in cos every conversion seems to have its slight differences. But yes the Dx metering head will work with your 9a injectors - its what I have on my setup. All the best with it

[chrisme85]

have you got yours in and running mate?

[MikeH]

You need the ECU loom ideally from a KR and ideally the ECU too- the 9A one will expect different hardware on the rest of the engine, and I'm not sure if it will work.

Your best bet would be to buy the following bits from a Mk2 golf 16v with a KR engine

ECU
ECU Loom
WUR
Metering head and air box - you might be able to use the 9A one, but I'm not sure if all the sensors and connections are compatible.
ISV, control box, associated loom - although you can rig up the Aux Air Valve from the DX lump to work with a 16v engine.

The TCI unit is the same.

I think the 9A dizzy and alternator will be ok, as should the injectors, injector pipes and manifolds, if you don't have the Scirocco 16v manifolds (and they're pretty rare). KR ones will be fine as well, but make sure you get injectors with threads to match the injector pipes you're going to use.

You'll also have to lengthen some parts of the engine loom to reach the various sensors in their new positions.