19 replies to this topic

[zebidee]

Need some opinions on which set of carbs to go for! The engine is a 1275cc with a stage 1 kit and stage 2 head, currently running on a single HS4. I was originally planning on going for twin HS4's, but the cost of a decent set scares me a little at the moment, so was looking into other options. Always liked the sound of a Weber, but would rather not carry out any bulkhead mods, hence was looking into a DGV. Any advice & opinions welcome

[Nightrain]

Should work well, there a more modern version of the DCD weber and are of the progressive choke variety. Meaning both chokes supply fuel to all cylinders, the primary choke opens first, upto about two thirds throttle then the secondary choke comes in. This is a great as you can set up the primary choke weak for economy and have the secondary set for max power. Giving you virtually the best of both worlds.

Oh yeah if it's one with a water heated auto choke get a cable conversion for it, there nowt but trouble.

Edited by Nightrain, 26 April 2009 - 08:53 PM.

[cap'n crunch]

I would personally recommend a Weber 28/36 DCD, they are great fun

[zebidee]

The DGV is definitely a strong possibility at the moment. Looks pretty awesome too!

Cap'n crunch...are you running a 28/36 DCD at the moment?

[Nightrain]

The DCD is much more tuneable than the DGV, the DGV has fixed chokes usually 32mm (there maybe different sizes). I assumed you had the carb/manifold ?

[zebidee]

No, looking into which to get at the moment

[Nightrain]

The 28/36 is a good carb just a little old hat now, if your buying consider the 32/34DMTL, weber actually offered this carb as a conversion for the mini. The kit came with everything cables manifold and air filter box. Bloody good carb and more refined than the 28/36 and yes had the 28/36 myself and driven a 32/34.

[zebidee]

Ok. Still learning about Webers at the moment . I've seen a 32/36 DGV, what is the difference between that and the 32/34 DTML? My main deal really is would theses Webers run better than a setup of twin HS4's?

[Nightrain]

Like all these carbs they are all very similar, iirc the DGV has fixed chokes meaning it's not as tuneable as the DCD/DTML. But you will still get the right results with them, just maybe the economy wont be as good. If set up right by someone who knows what there doing, I wouldn't expect much difference.
Plus the added bonus is they are a LOT cheaper than the others, because they where used on a lot of production cars that are still around today.

[Pooky]

Why not just keep it simple and choose an SU HIF44?

[zebidee]

Is there much difference between an HIF44 and an HS4?

I do fancy something a bit different too

[Pooky]

The size.

HS4 is 1.5", HIF44 is 1.75" and much more suited to a tuned 1275, no bulkhead mods, cheap as chips, easy set-up.

I'd spend your time and money on a new cam

[zebidee]

Fair dos! This was why i was looking at the down draft type Webers...to avoid the bulkhead mods . I had thought about the cam, but over summer i plan to start building a 1380, so was planning on saving it for that really . Just want the carb as a bit of a change and to tide me over

[Nightrain]

This would be where the 28/36DCD, would be of benefit. Because it uses separate choke(venturi) as such. You can change them to suit what ever size engine there fitted to. They are a better carb than the SU and will out perform them.

[Gingerjoe]

a twin hs2 carb would be more suited to a 1275