Weber Carbs and Vaccum Pipes?

[MG Stew]

On the front of the weber carbs on the MG 1600 there are 4 nipple connections like what vaccum pipes would be connected to.

Here i have a picture of some weber 40 dcnf carbs that seem to have these vaccum pipes inplace. This link is for reference and isnt an advert by the way.

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&category=72205&item=7960200725&rd=1

So what i want to know is should my MG 1600 have these connected up like this?

[G Force]

Hi Stew, The R series does not have any pipes connected to these vacuum tappings. The ones pictured are for an S series set up.

Cheers Gary :)

[MG Stew]

Thanks very much gary! :toothy:

[junior]

I have just bought a set of Maestro 40 DCNF's. What is the exact weber model number for these? Does anybody know what the sizes of chokes, air correctors, main jets, idle jets, accelerator pump jets, and emulsion tube's are? Nottingham eh? I work down near wastecycle at colwick.

Regards,

[MG Stew]

Hi there unfortunatly i cant answer your question, but yes i am from Nottingham. Live in gedling which isnt to far from colwick.

[G Force]

Not too much help I know but. For Both R & S series the jet sizes are different but I dont remember exact sizes, I do however know that both engines use 30mm chokes so its a start. :)

[MG Stew]

Bit late but i found the all the jet size info for the webbers.

Main jet : 145
Air Correction : 210
Idle Jet : 55
Accelerator Pump : 35
Emulsion Tube : F22

Thats if the webbers were from an "R" Series car

For the "S" Series

Main jet : 145
Air Correction : 210
Idle Jet : 57
Accelerator Pump : 35
Emulsion Tube : F36

[G Force]

Hi Stew, Just as an extra note, For a simple and effective mod we used 180 air correctors, this made the standard car pull harder at higher rpm as the standard jetting made both engines run lean under load when checked on the dyno.

Regards gary :)