Weber Carburetters

[Hercules]

Hi Darryn.

The 36DCD is a good carb provide it is in a good condition. You can block the return off as I run my Lada for the last 3years blocked off on the Solex due to the electric pump fitted and was required to blank the return line off.

Regards

Hercules

[darryn]

Hey Comradskis

Well, I went to Carb city this morning and did some asking. I was persuaded to just leave my vacuum advance blanked off by one of the old toppies who work there. I then asked one of my mechanical engineering buddies what he thinks of vacuum advance. The final answer is that the fuel saving would be very small, and that vacuum advance is generally for cooler climates than ours. So I'll just leave the ADF in- there's no point in spending a bunch of cash for nothing (learnt that the hard way!).

One thought that stayed with me is that a place like carburetor city is actually a dying industry. Although it might not die off completely, I don't see this technology ever reaching the highs of the 20th century. It's kinda sad. Although, the silver lining is that maybe in a couple of years time there'll be a pile of cheap carbs lying around.

[Charles]

Hi All

What is the correct jet sizes for a 38/ Got one for free today. The water choke has been removed but can be made manual. Still there is nothing better than a freebie. Getting a power steering box and pump on monday. Curious to see if it might fit, but that is a discussion for another time and place.

Charles

[Ari Bezuidenhout]

Ask Mike, he has a 38DGAS

Ari

[ronnie]

Hi Charles

Mike will be able to give you the jet sizes as he has one fitted. To convert to manual choke it is best to get an original conversion kit as to make up your own conversion to operate the lever used by the water choke is not very successful. Check Baxters site for the full explanation.

Ronnie

[Charles]

Hi Ronnie

I have read that. The guy has another one with a manual choke, so I can strip everything off there. I think my solex is fine still so will not change it. Also I think the solex will be lighter on fuel than the 38.

Charles

[ronnie]

Hi Allan

If your weber is a 32 / 36 dgav I would be very interested to know what jets are fitted to it. All the information I have been able to find is always for the 1600 Niva.

Ronnie

[allan]

Hi Ronnie

Not sure what Weber I have, will see if I can find out, but it is reasonable on fuel and performs well, it just idles a bit high when the engine is warm.

[ronnie]

Hi Hercules

I noticed in an old post you mentioned to Darryn, when fitting a Weber with an electric pump, to simply block off the return to tank line. This would also be the way I would do it. The return to tank is also a problem with 2 petrol tanks. The return to tank line is restricted to a very small hole, 1mm I think, what would happen if you "T" the return line into the fuel line PRIOR to the pump ?. The small amount of pressure would only make it`s way back to the tank. If it works it would make it easy to have a return to tank when 2 petrol tanks are in use, if the change over was before the "T". Your thoughts ?.

Ronnie

[Hercules]

Hi Ronnie.

I like your thoughts and it should work.

The reason return pipes are used are mainly for mechanical pumps. The reason is that a machanical pump deliver a certain amount of fuel at a certain engine speed and increase or decrease as the revs increase or decrease. A mechanical pump also are not fitted with a relieve valve to control the pressure if the fuel is not used.

Electrical pumps deliver a constant amount of fuel at a preset pressure. The electrical pumps are also fitted with relieve valves. The reason why the return pipes are block is that the same pump can be used for a variety of engine sizes and that it can run out of fuel on bigger motors if a return pipe is fitted. Also not all return pipes are fitted with restricters, they only varies in size.

Regards.

Hercules

[ronnie]

Hi Hercules

If it works the nice thing is it should help to keep the fuel cool. I have had peculation problems in Ari`s Niva when running in high heat with no return to tank. It is easy to restrict the return line if necessary. When I had the problem I had the pumps mounted in the engine compartment, fortunately moving the pumps to the back cured the problem.

Ronnie

[vincentc]

Hi all. Can all lada owners who currently run Webers please post you consumption figures. My figures with the solex are similar to a 3.8 chev :-) . 258km off 31.18 litres I do however drive between 110 and 120 km/h

[Hercules]

Hi Vincent.

Your consumption is about the same as mine with the Solex. Mine is town and highway peak trafic. Nearly as bad as the Landy.

Regards.

Hercules

[Ari Bezuidenhout]

I got 7km/l about with mine and 2-4km/l in low range.

Ari

[Charles]

Hopefully the solex will be better.

Charles

[marius]

I normally get around 10 with the Solex. The Weber would seem to give more grunt but seems quite heavy on the juice. For off-road duties stick to the Solex.

Marius

[ronnie]

Hi All

In my post yesterday to Hercules re the return to tank line I should have made it clear that what I was saying was really only applicable when 2 tanks are fitted to the Niva. With 2 tanks there is a problem with the control of the return line when changing from 1 tank to the other. It becomes complicated. The way I was thinking should make it simple if the control for the change over is just prior to the "T" for the return line. The change over can be an electrical or hand 2 way valve.

Ronnie

[ronnie]

Hi All

Due to being too lazy to order new (smaller) jets for the Weber carb I have not been able to do anything to improve the petrol consumption. One way to alter the jets is to solder them closed and re-drill the hole. The problem is the drill is very small .45mm and a normal chuck will not hold it, and I do not have one anyway. What I did yesterday was to solder the .60 idle jet closed, cut a correct size cleaner for a gas welding torch with pliers to give it a sharp cutting edge, clamped it in the vice and put the JET into the chuck. It worked fine so anyone else with a similar problem with jet sizes can try this. I will see with the next tank of petrol what the improvement is.

Ronnie

[vincentc]

The ever resourceful Ronnie

I can alway leave my Lada in your drive way if you feel the urge to fix things ;D

Regards
Vincent

[ronnie]

Hi All

Here is the jet sizes I now have in the Weber 32 / 36 DGAV.

main jet primary--------1.30---secondary---1.42
air jet primary-----------1.65---secondary----1.60
idle jet primary----------0.6o---secondry----0.45
Primary emulsion tube--F66---secondry----F66

This is as close as I can get to what Dimitris is using and Vincent got 10 litres per 100kms on the last fill up. This is as good as the Solex gets and I am very happy with the way it pulls and accelerates. The change to Weber was worth while.

Ronnie

[ik]

Hi All I got a 36DCD for my Lada 1.7 what is better the 36 DCD or the 32/36 weber

[Ari Bezuidenhout]

The best one is the factory standard one, but the 32/36 should be the more economical of the 2 webers.

[rctz]

Hi all

I have a Weber 32 - 32 dir carb on my lads currently but I have a side draughts laying around I thought about a single sidy on but what do you guys think?
I found the 32dir a bit heavy on fuel any suggestions will be appreciated

Many thanks
Roahn

[powdersnow]

Sept 18, 2013 6:55:57 GMT 2 dimitris said:

Had you any problems with your Weber carb when you drove off road over steep inclines uphills?

First i have to say i am pretty happy with my Weber. In Winter i did some testing, but now first time real much offroad. Everything perfekt, as long as not too steep.

Four or five times engine stopped. Always in very steep inclines with near full gas. A hole or a bigger stone, just little jumping of the front is enough and Weber kill the run of the engine.
Before the tour i already changed the swimmer to plastic. Next i will drill a hole inside, read in internet i helps offroad. Someone got experience with that?
Fuel pressure was all time same, maybe better next time go little bit down.
But all in all way better than Solex ever did. With Solex and same tour engine would had been killed way more often.
Not one time problems with temperature! I cant believe. This was always a big topic with Solex, even with fuel line back to tank. And at moment i only have one fuel line, nothing goes back in tank for cooling... this i will do in spring time.


About fuel taking i dont know exactly. But my Niva never take much more fuel than others on the station


greets Jakob

[dimitris]

Sept 19, 2013 21:24:43 GMT 2 powdersnow said:

Next i will drill a hole inside, read in internet i helps offroad. Someone got experience with that?

Jakob thank you for the replay but sorry I cannot understand what you mean......please explain....where you will drill the hole?

[powdersnow]

The plastic float (sorry, before i said swimmer) need two big holes. It should help... is standing here, i think i will try:

klick

someone told me better use a electric fuel pump, but i dont like to change from mechanical. And with my fuel pressure regulator it is the same result i think.


Greets Jakob

[dimitris]

I certainly would not try it!!!!
And I suggest to try it only if you have and another plastic float!!!

[powdersnow]

And I suggest to try it only if you have and another plastic float!!!

good idea!

... first i will have a look to adjustment of the float.

My engine is muddy. So i can see very fine if something is leaking. And all carburator is little bit wet. Not much, nothing dripping, just enough to get the mud on it dark after three weeks. Is this normal? All sealing are new.


greets Jakob

[dimitris]

.........in mine I've two cover gaskets and some mm longer cover fixing screws for better clenching ........so there is not leaking.