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 WEber Carburettor - Identification

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Jim Posted - 10 Aug 2017 : 22:06:15
My Series V Rapier is fitted with a Weber Carburettor (See Photos)
Can someone please identify the model and if possible the correct jets that should be fitted

I would like to fit a plenum chamber to quieten the roar when accelerating hard

As an alternative I am thinking that a Ramflo filter may fit (see last photo)

Any suggestions or comments would be greatly appreciated

Regards to all and TIA to those who answer

4   L A T E S T    R E P L I E S    (Newest First)
bigt80 Posted - 28 Aug 2017 : 10:15:36
Or these chaps who I have found very helpful over the years.

Cheers. G
Stella Posted - 25 Aug 2017 : 08:12:07
Webcon UK Ltd, Middlesex, 01932 787100

these folk may be able to help you..
Jim Posted - 11 Aug 2017 : 10:20:34
Thank you very much for the info
It will be a great help when I start to overhaul the carb
Now to find an reconditioning kit
pruyter Posted - 11 Aug 2017 : 09:49:05
It has to be the Weber 28/36 a carburettor quite common in the sixties and used on cars like Ford Cortina and others. This carburettor was a common exchange for the usual Rootes carburettors on both the Alpines and Rapiers. Although the same carburettors were used on Rootes engines the jetting differed for 1500, 1592 and 1725 engines.
For your Rapier with the 1725 cc engine the jetting is as follows:

Choke Primary 25
Choke Secondary 27
Venturi Primary 4.5
Venturi Secondary 4.5
Main jet Primary 135
Main jet Secondary 165
Air jet Primary 220
Air jet Secondary 180
Emulsion tube Primary F30
Emulsion tube Secondary F30
Idle jet Primary 55
Idle jet Seconday 70
Pump jet 70

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