BX 19 GT -86 Swedish spec on carb?

[Jesper75]

Hello all BX-drivers.
Recently bought myself a BX GT. Liked it since I borrowed one from the Citroen dealer in the early 90´s after driving my BX 16 RS into some logs (nope, it didn´t survive).
Anyway, in the 80´s, Sweden, along with Switzerland, had their own regulations for controlling emissions on cars. In one of the Haynes workshop manuals it´s described as regulations created by bureaucrats with no knowledge at all.
Anyway, the system usually fails, and I´m thinking of removing it. But I´ve been told the carb on Swedish cars are not the same as on "normal" spec cars.

So my question is: what is the GT´s original carb

No, my car doesn´t run as it should. I guess I have a vacuum leak somewhere. The EGR is broken and disconnected (and plugged in both ends) and I replaced almost 4 meters of 4mm. vacuum hose - and it runs better, but still stalls when letting go of the throttle (unless i use the choke), and it doesn´t like full throttle on +4000rpm

My "girlfriend" (OT: what do you call someone you live with, but are not married to in english? In Sweden we call it "sambo", short for "sammanboende", translated it would be "living together - so why not call it "lito" in english)
said just black smoke came ut when I floored it.

[saintjamesy89]

Hi Jesper, what an interesting situation! I am in the UK and have a 1985 19GT and a Swiss spec 1986 16TRS SE automatic.

The TRS I bought as an air conditioning donor vehicle for my GT, it too has the emissions control system - a very complex system with vacuum lines everywhere and EGR. I have tried blanking my EGR system on the TRS but it runs worse! The original carb will need rejetting I think to avoid lean/rich conditions with the different airflow after EGR removal. if you keep that original carb. Or just get yourself a decent UK spec carburettor and have done with it all!

My TRS has a Weber 32/24 DRTM and at least used to have 75bhp, but UK spec 16's had a 32/34 Weber DRTC or Solex 32/34 Z1 with 92bhp. I am currently looking for a UK spec Weber DRTC for my TRS as it also does not run properly, I plan to remove/blank off all the emissions control systems as it is overly complicated I think. I was going to use the TRS for a parts car, but it is too rare and too good a car so I will get it registered, MOT'd and find a nice home for it. She deserves life!

Swiss 16TRS:

BAZ (XU5CP) BX 16 (—Oct 89) for Austria and Switzerland
Bore × stroke: 83 × 73 mm
Compression ratio: 8.3 : 1
Maximum power: 75 hp at ? rpm
Maximum torque: ? Nm at ? rpm

UK 16TRS:

171C (XU5S) BX 16 RS/TRS (Oct 84—Sep 88) XB XB/XE series
Bore × stroke: 83 × 73 mm
Compression ratio: 9.5 : 1
Maximum power: 94 hp at 6,000 rpm
Maximum torque: 140 Nm at 3,500 rpm

I don't have any details about an emission control system on a 1.9 carburetted BX, but I can tell you UK spec 19GT's came with a Solex 34/34 CISAC, an early version on the Solex 34/34 Z1. Mine had a new carb (Z1) last year, it came from an official weber dealer who keep a stock of brand new Z1's - but it wasn't cheap!

UK 19GT:

159A (XU9S) BX 19 GT (Oct 84—Jul 86) XB XG series
Bore × stroke: 83 × 88 mm
Compression ratio: 9.3 : 1
Maximum power: 105 hp at 5,600 rpm
Maximum torque: 158 Nm at 3,000 rpm

[panky]

Hi Jesper,
Nothing to add to Tom's detailed post but just want to say hi - from another GT owner.

[Jesper75]

First if all: Tom, thank you for your detailed answer.
As you wrote, it's easier to find a "non-swedish" carb than trying to get the vacuum system work. I've read about people who has done it. And the car runs much better and the emissions are better as well.

And to Panky: hi to you to.

By the way, what are the color of your bumpers? Mine are resprayed in a grey color

[saintjamesy89]

You are welcome Jesper! Always happy to help out a fellow BX owner, especially if theirs is a GT. My bumpers are just the standard coloured plastic, the bleu romantique GT's had this darker bumper colour. The TRS has the incorrect rear bumper colour, it should be a pale grey like the bodywork but finding the correct MK1 rear bumper is extraordinarily difficult, just like finding a carburettor!

[Jesper75]

Interesting, I think my bumpers are in some dark colour benath the light grey spray paint. If I'm lucky, perhaps that's the original!?

Perhaps it's easier to try to fix the emission system rather than finding a carb!?

My car is an drivable object with lots to do (and parts to find). But I like having something to tinker with instead of watching TV.

[panky]

Mine too have been painted. I've recently had to do the rear one again and the colour is Gris Fonce with a matt lacquer top coat, my car is also bleu romantique.

[Jesper75]

I think my car is EVE, gris perle met. It's silver in my opinion

Also found out (and remembered)that the GT's supposed to have an "onboard computer". Just as easy to find as hens teeth, I suppose.

I will need a lot of help from you in the future .....

[Jesper75]

I think my car is EVE, gris perle met. It's silver in my opinion

Also found out (and remembered)that the GT's supposed to have an "onboard computer". Just as easy to find as hens teeth, I suppose.

I will need a lot of help from you in the future .....

[panky]

OOOO nice car I think the computer was only standard on the very early GT's, the ones with the tweed upholstery, and was an option on the later cars. It would be a nice to have though.

[Jesper75]

Thank you.
But there is a lot to do. It leaks, runs poorly and in need of an new right fender and two doors for example.

Ok, no computer . Just a clock that's been in front of the gear lever i guess?

[saintjamesy89]

Spot on, the 85 GT's had the tweed interior, light grey dashboard/plastics and fuel/trip computer but didn't have the wing mounted indicator or pinstripes on the sides.

[Jaba]

I was surprised that my first BX, a 1989 GTi did not have a trip computer. In fact this drivers information device was not fitted to BXs as standard except for some Mk 1s. I think Citroen missed out here compared with the rest of the market. I had a 1985 VW Scirocco before the BX and that had a trip computer fitted as standard even then.
My daily modern tin cars have all had trip meters and I find them useful on a journey if only to cycle through the displays to relieve the boredom of a long often repeated journey. The MPG figure is always very very optimistic I have noticed.