[Mk2] [NA] rev3 na to tubby

[shoky]

hi newbie here in need of some advice from u folks. i recently bought a rev 3 na which has been good fun but could do with a few more ponies, so insted of tyring to modify the 3sge i decided to go turbo so i got myself a written off rev2 turbo doner car. i assume it will just bolt in as the chasis is the same but my question is will it plug and play or will i have do some wiring to get it working. thanks

[Peter Gidden]

Just change the engine loom. There will be a few wires to sort but nothing major.

[shoky]

would u be able to tell which wires would that be, also i read somewhere i will have to use the turbo gear cables is that true.. i removed the tubby engine with the complete wiring loom on and the fuse boxes connected. pulled the wiring from the boot and along the passenger side to the front pass footwell. thanks

[Tsia]

I've done this exact swap already, yes you'll need the gear cables and as far as wiring goes, remember : Speedo is different, rear fogs are different. (And I'm sure there was something else...)

Either way, the wiring is the (Relatively) easy part of it

[Peter Gidden]

Either way, the wiring is the (Relatively) easy part of it

Correct.

Don't bother changing the body loom. Like i said, just the engine loom.

Issues you MIGHT have (from memory), will be starter relay earth and circuit opening relay.

Get the conversion done, plug the loom in, and turn the key. Any issues, come back here and we'll sort you out.

[shoky]

Thanks for the info guys. really looking forward to dropping it in this weekend

[Rogue]

Either way, the wiring is the (Relatively) easy part of it

Correct.

Don't bother changing the body loom. Like i said, just the engine loom.

Issues you MIGHT have (from memory), will be starter relay earth and circuit opening relay.

Get the conversion done, plug the loom in, and turn the key. Any issues, come back here and we'll sort you out.

Also, you'll have no spark. Check back from the igniter to the fuse box.

[shoky]

hi guys, bolted the engine lump in eveything has plugged in except a few plugs. ive plugged in the ecu, the green relay and the grey box but im left with 2 plugs which dont plugs together. 1 from the engine loom and the other from the chasis loom int the boot also in the engine bay the is a grey round plug(4wire) and a 2 wire small plug which dont have anywhere to plug in. im not sure how to upload pics or else i would. not tried firing it up being a bit cautious dont want to end up frying up anything. thanks

[Tsia]

Whereabouts are you based? If it's near Milton Keynes, you're welcome to check out the wiring on my tubby, as it should all be the same as your conversion.

edit : in fact, if you get your post count high enough and post pics of what areas you need to see 'plugged in', I'll be able to take pics and post those to show you how mine's done.

[shoky]

hi mate im in halifax, just 160 miles away

postimage.org/image/cy8hyonwr/

postimage.org/image/ah9f7b1dn/

[Peter Gidden]

1 from the engine loom and the other from the chasis loom int the boot

Depending on conversion, it may not be an issue. Get it started first.

in the engine bay the is a grey round plug (4wire) and a 2 wire small plug which dont have anywhere to plug in.

Whereabouts in the engine bay are these plugs?

Grey 4 wire sounds like could be 02 sensor (near top of downpipe), or fuel pump relay (n/s rear bulkhead).

Is the two pin plug greay or blue?

[shoky]

its near the fuse box in the engine bay. next to the ignition coil, ive posted the link to the pics. thanks

[Tsia]

Right, the first one (ECU) is bit of a mess with mine as I've got a HKS FCON too, which means I've got a lot more wires! This should hopefully give you some kind of indication though :


Second one, I couldn't really get a good picture of in the dark, but here it is anyway :


Probably no use due to the crappy lighting/me being unable to tidy the wires into a reasonable fashion at this time of night. If need be, I can take some more tomorrow evening when I'm home from work.

[shoky]

id appreciate if you could take some for me tomorrow mate
its the small black box on the left where the grey round 4pin plug is coming out of.. seems like some relay to me

[Tsia]

No worries, so long as I make it home in time for it not to be dark, I'll get some better pics for you.

[shoky]

im sure with boost u wont have trouble making it in time

[Tsia]

[Peter Gidden]

Right, the first one (ECU) is bit of a mess with mine as I've got a HKS FCON too, which means I've got a lot more wires!

This should hopefully give you some kind of indication though.

None whatsover.

I'd be getting it going as a stock install, then wire in your antique black boxes

Second one, I couldn't really get a good picture of in the dark, but here it is anyway

Can't even see a spare plug

[Tsia]

I'd be getting it going as a stock install, then wire in your antique black boxes

It was already installed and mapped in the donor car, so it seemed silly to throw it in the bin instead of just... putting it in the car as it was in the other one


Edit : I was in fact, actually worried that it may not work correctly or lose performance, if it were mapped with the FCON, then installed without it.

[shoky]

tried turning it over today. turns over well so starter is working also u can smell the fuel is cumin thru not sure about the spark, weather is abit crap to be working on car after work. got a day off friday so will be having a good look over then.