1.9DG Weber question

[gjy55split]

Can anyone point me in the direction of an exploded diagram for one of these please? Particularly the hose routing.
3 hose outlets. Fuel in at the top, return on bottom left, what about the rear one pointing forwards? Or are these the wrong way round?
Someone had already played with it before I bought it!
Thanks

[CovKid]

And you'll be forever playing with it. They're not a great replacement despite the myth that they are, in the same way that some still think the 009 dizzy works well on these engines. However, with luck you may get a little help from someone who actually got theirs to run properly all year round. A rolling road helpful too.

[300CE]

If you don't have any luck, try giving Southern Carburettors a shout:

http://www.sciperformance.co.uk/" onclick="window.open(this.href);return false;

[gjy55split]

This is sucking from what I think is the return to the tank.
That'll explain pushing fuel into the crankcase!

[Sunray]

I had one of these and while it works, I had it rolling road tuned, the jet was the wrong size even though it was marked as at DG t25 replacement. Even after the tune, its makes the van weirdly soft to drive. Lacks zip, rev's don't rise fast enough.

It got me through a season but the Pierburg 2e3 is much better suited to the long manifold. I sent my 2e3 to Gower and Lee and while it took 8 weeks or more, it came back looking new.

Difference was night and day when I swapped it back.

[300CE]

Didn't realise when I bought mine that it had a 34 DAT Weber on it - haven't had the chance to use the van well enough yet to comment on its abilities as i'm currently in the process of having a recon DG engine fitted (I'll post up a separate thread on my van issues once she's up and running!!).

I will probably take it to be tuned somewhere like BD Engineering in Sittingbourne once she's back!

[Sunray]

Don't get me wrong, it was totally drivable and if you've not had the 2e3 then you'll not know what your missing.

Similar fuel efficiency but worth hunting down a 2e3. 180 quid and 8 weeks you get what looks like a new carb. Good idea to do that if you're having a new engine fitted.

Mine purrs.

[Ralf85]

What happended to Weber carbs. They used to have such a positive reputation 20+ years ago, but in recent years they seem to have lost the plot, or do we expect too much from them when fitted to our vans?

[kevtherev]

Webers are still great carbs, just not on a WBX T25... or Aircooled in some respects.
The inlet manifold does not help it's setting up.
The pierburg was chosen by VW because it offered an all round performance, and economy, albeit a complicated metering system, take away the auto choke and it becomes a pussy cat.
Delorto carbs are the RR of flat four carbs IMHO, they deliver more power but at a cost, fitted to a 2.1 DJ they are truly awesome.

[300CE]

Cheers for the info chaps! I'll probably see what the fella at BD Engineering thinks of the carb and whether its working to its full potential on the van or whether any improvements are recommended, but may well see if i can pick up a 2E3 in the meantime (funds pending)!

[CovKid]

In nearly 30 years working on v-dubs I've seen far more webers in cardboard boxes under benches than I've ever seen fitted and working. It'll cost money even to set them up, if they can be made to run right at all. There is just no point on a stock engine - the 2e3 is a far better match. It won't on its own increase performance although it'll certainly drink more fuel

I'm honestly not trying to be negative, just realistic. As soon as you fit one, it tends to hit your wallet for virtually no real gain.

[Ian Hulley]

In nearly 30 years working on v-dubs I've seen far more webers in cardboard boxes under benches than I've ever seen fitted and working. It'll cost money even to set them up, if they can be made to run right at all.

A very good and extremely knowledgeable friend who is a time-served aero-engineer tried to set up a Weber on his DG, even with Weber's technical support (which was excellent apparently) and various different jets he never could set it up properly ... £400+ later guess where it is now ? ... In a cardboard box under his bench.

[gjy55split]

OK, so I've had some time this evening and pulled the carb apart again, other than a diphgram spring being on the wrong side, I can't see anything wrong with it.

But, it's still sucking from the fuel return hose .

Can anyone point me in the direction of an exploded diagram and jet data please?

I'll ring Southern Carburettors in the morning.

Thanks in advance.

[CovKid]

You haven't actually confirmed WHICH Weber it is. I've seen several types utilised. Any identifying numbers? Those that made it should be able to assist, or hunt for a diagram online?

[gjy55split]

34 DAT 32/250 01
2468

Jets:- Left to right standing at rear of vehicle
50
790, F30, 117
145, F25, 165
75

No luck finding a diagram so far.

Any help appreciated.