Weber Carburetters

[hotstuff]

I not sure but i think i have something somewhere about settings it's a 10 deg change i believe not sure again but will look

[Charles]

Looks like I might also be joining the weber gang.

What size jets should one use for the 1700.

The carb I can maybe get is a 36 dcad with the choke removed.I read on Baxters where guys have converted them to manual choke. Has anyone here done that?

Charles

[ronnie]

Hi Charles

Ask Ari the jet sizes as when I put that 36DCd on I had various jets which I tried to get the best overall running. The problem even for the 1600 is there are more than 1 set of sizes listed depending on where you look.

Ronnie

[Charles]

Hi Ronnie

Will have a little talk with Ari. Maybe when he gets his solex running nicely oneday I can buy the weber from him.

Charles

[ronnie]

Hi Charles

If you can get it off him I would suggest you get an overhaul kit for it as it is now over 14 years old. It was a new one at the time not second hand.

Ronnie

[ronnie]

Hi Charles

If you look closely at Baxters you will note that they mention converting to manual choke is not very successful.

Ronnie

[Charles]

I saw that today Ronnie. Wil hear what ari has to say later this month.

Charles

[marius]

Hi Ronnie

Let us know how your new Weber is doing.

Regards
Marius

[ronnie]

Hi Marius

Change of plan, only collecting it tomorrow morning (Sunday) at the Blue Marlin Hotel in Scotburgh. I will be sure to let you know.

Ronnie

[Charles]

Hi Ronnie

Are you planning to fit it tomorrow allready or only monday?

Charles

[ronnie]

Hi Charles

Will fit it tomorrow. Don`t know why they give different names to the days as they all appear to be the same to me ;D I have been pre making brackets for the accelerator cable ( choke is easy ), using the photo`s of the weber. The only connection with a problem is the vacuum connection to the crankcase ventilation. Even on Baxter`s there is no definitive answer that I can find. Mention is made there that the original connection is before the throttle disc, but looking at it I disagree. I have made a connection from the old EGR vacuum point but have restricted the diameter at the connection to 1mm to avoid weakening the mixture. Remember there is already a small drain pipe on the inlet manifold to avoid flooding with a 1mm dia pipe so if I have a problem I will block this one off. We will see ;D. Photo`s when available

Ronnie

Ronnie

[Charles]

Hi Ronnie

Sounds very interisting. Looking forward to photos.

Charles

[ronnie]

Hi All

Eventually managed to get started to fitting the Weber today. The bracket I pre made was no good due to the fact I decided to take a 32 / 36 with water choke instead of manual as it fits in better with my existing plumbing. It is now all installed except for very minor tidying up. But I have a problem, I noticed water leaking from the water connection at the front top corner of the block. Where I drilled and tapped for a barb some time ago has broken . I think the part number is 2102- 1303014. You will see it in the photo. Does any one have one for sale? (urgent).

Ronnie

[ronnie]

Hi All

Here is a picture of progress so far I should also mention this model of Weber has a return to tank connection for the petrol.

Ronnie

[Hercules]

Hi Ronnie.

The carb look stunning on the Lada. Sorry for the breakage at the water connector, hope you find one very soon.

Regards.

Hercules

[marius]

Hi Ronnie

The Webber looks like a nice and solid fit. I am sure Ventz or Chris would be able to help.

Regards
Marius

[Charles]

Hi Ronnie

I must admit I am very jealous.

Charles

[Lee]

Hi guys.

Do any of you know what a service or overhaul costs on the std carb?

Lee

[hotstuff]

i have one for you pm me for water connection

[ronnie]

Hi All

Well the Weber is fitted and it revs beautifully and that is a far as it goes. It is similar to the Solex in that it will not idle. Where the Solex idles in a slow 500rpm then 1000 rpm etc the Weber is between 500rpm and 1500rpm quite rapidly. I have removed the inlet manifold today to make sure there are no air leaks and the gasket is perfect. Refitted the Weber and it is still the same. As the problem started with the Solex I have refitted it until the problem is solved. Any one with some suggestions would be very welcome as I have run out of ideas. Then last thing altered in the fuel supply was the electric pump. I checked the pump pressure today and it was 12 psi. It is recommended to be no more than 3.5 psi so i fitted a temporary pressure regulator but that also made no difference.

Ronnie

[Charles]

Hi Ronnie

How far is the pump from the tank? Fill a 5l container with fuel and let it suck straight from that. Also spray q20 or similar whe the manifold bolts to the head. It might be sucking air. If it is the idling will pick up. Let me know if its helps.

Charles

[ronnie]

Hi Charles

The pump is designed to be at the front and suck not push. It pumps a good volume of petrol into a can. I have already tried spraying carb cleaner all around the inlet manifold before removing and after replacing it. I also carefully examined the manifold when it was off, and it looked fine to me. With the Weber it sounds exactly like a diesel bus way back in the 60`s which idled with the motor continually going from 500 to 1000rpm while waiting for passengers. (This would be before your time). I also tried the solex with a gravity feed out of a can, also no difference.

Ronnie

[spikes]

Hi Ronnie
Have you checked the face of the inlet manifold for 100% flat/true? If there is any distortion, that could let air into the mixture.
Hope you win
Regards
Spikes

[Charles]

Hi Ronnie

Is +he timing correct?

Charles

[ronnie]

Hi Spikes

I checked with a steel rule and it was fine. I am at a loss as what to try next

Ronnie

[marius]

Hi Ronnie

This is a real shot in the dark but if your car sounds like diesel it could be a broken shoe on the timing chain??

The logical thing would be air getting in somewhere but I'm sure you checked.

Your electrical pump could also be faulty? Can you refit the manual pump and see if it helps?

Regards
Marius

[danie]

Hi Ronnie

Another real wild shot in the dark - I assume blocking that little drain pipe at the center of the intake manifold will not cause any improvement ?

Regards

Danie

[ronnie]

Hi Danie

Yes i tried that as well no difference. By the way that little drain pipe was very common on cars in the 50`s and 60`s

Ronnie

[marius]

Now it is getting real dark ;D

Another thing that jumps to mind is the replacement air filter does not fit properly - whilst mine does???

[spikes]

Hi Marius/Ronnie
that air would still have to pass down the barrels so should not effect the idle.
Not having seen a Lada distributor, does it have a condensor somewhere in the sparking process. If it ain't it could be spark?