Weber dcoe 40

[wsmitwil]

Hi everyone

Don't realy know what I've got myself into, but here I go, yesterday I went to an auto jumble in Malvern and spotted these dcoe 40s on the floor and stupidly asked how muck they where he wanted £200, managed to get them for £160 don't know if it was a good deal or not just really fancied them

Just wondering if these anyone one here has one fitted to their air cooled 126 and where I can get the parts to get them suited to a 650cc, apparently they came of a 2 litre Vauxhall engine so I assume I can't just bolt it on

It it worth it yes or no, any advice

[Gadge]

I belive there is a manifold available for a DCOE carb - axl gersil probably stock them........ You'll only need one mind you 

[Pete126]

Hi Will, They are real men carbs them But you need the manifold to fit one around 150 euro also need to have them re-jetted with smaller chokes, which could cost an arm and a leg.
The other thing to consider is that it won't improve performance allot unless you upgrade the head (bigger valves, gas flow, higher compression, camshaft and exhaust

If you want to go ahead, go online find the nearest official weber dealer near you as they will be able to re-jet the carb, some will give you an allowance against the parts they swop, always worth asking.

[Piotross]

You can only get parts for these carbs in Italy. Parts are axpensive but there is a lot of them. It is a typical tunned part in Italy. It is no use to instal these carbs to serial engine of 126p. Carbs need many modifications to work properly. The question is why install the carburetor if you can not it use 100% capacity.

[Rusty's Uncle]

You need a set up something like this. This is a Solex version. It is going spare if anyone is interested. The best place in the UK for Weber parts is Webcon , they are quite helpful if you get through to the right guys.


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[grubscrew]

Hi Rusty. I have some Dell`Orto 40`s on a my 750 A/C, and after alot of faffing goes really well.I have it on a Panda Head /and uprated cam. I think looks, do count if you want something a little different.
I also have a second set for sale on manifold , to suit a standard head. Mike.

[wsmitwil]

Cheers everyone, looks like it's going to cost a bit, but might be worth it, will keep this updated

Thanks

Will

[DEYAN IYI]

Hi all,

I am typing you now with only one hand, cos "it costs an arm and a leg", still got my pair of legs, with this project I do not know for how long   Few days ago received a purchase from http://dellorto.co.uk. Not to mention how happy I feel Well, I am converting a 1000cc (pair of 2000cc Alfa) to 650cc using as a starting point the jetting of Alfa Romeo Giulietta 1300 (1980) in my case Dellorto DHLA 40. I got some close size jets as well. Who knows what would fit best...

Here you got two examples for Weber starting points, just stick to 28mm chokes:

Giulietta Sprint Veloce

Engine capacity: 1290 cc
Weber model: 40 DCOE 2
Choke: 29
Auxiliary venturi: 4.50
Main jet: 110
Idle jet: 50F11
Emulsion tube: F16
Air corrector jet: 200
Accelerator pump jet: 35
Accelerator pump back bleed: 70
Needle valve: 150

1300 GT Junior Super

Engine capacity: 1290 cc
Weber model: 40 DCOE 28
Choke: 28
Auxiliary venturi: 4.50
Main jet: 112
Idle jet: 50F11
Emulsion tube: F16
Air corrector jet: 210
Accelerator pump jet: 35
Accelerator pump back bleed: 60
Needle valve: 150

http://twincarbs.com/

To gain something out of it on a standard engine (single port inlet) you would need to put a real exhaust. It will wake about 2-4 horsies (10-15%) up, would be pretty dynamic and with more luck, if it is properly adjusted, when you do not treat it like a racer, could make a better millage. Also a bit of a wow-effect No miracles here, just physics.

Enjoy that game, Will!

Best regards!