A non-Froggy tech question - Weber conversion
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  1. #1
    Fellow Frogger! Paul Smith's Avatar
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    A non-Froggy tech question - Weber conversion

    Hi All,

    Amongst the vehicles I care for now is a 1978 M******* B*** 230 that we inherited when my mother died last year - it has a completeley horrible Stromberg CD carb mallet , which is virtually impossible to keep in tune from what I can see - I have heard you can convert it to a Weber from a Cortina - anybody done a similar conversion on a Frog car - is this sort of thing a big job?

    The car has been in the family since new, but is such a pig to start when cold - despite having lots of work done, that it has not travelled more than 1000ks in the last year.

    Any suggestions (other than the scrap heap roll_lau ) welcomed!

    Paul

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    Paul Smith

    1974 DS23 EFI BW Auto
    1974 G Special 1220


    http://www.simplicitas.com.au

  2. #2
    Guru davemcbean's Avatar
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    I've done this conversion a few times on older Pugs.

    It usually requires that you modify the accelrator linage a tiny bit (or a lot, depending on the car), the air cleaner base, and sometimes requires a little filing or grinding of the manifold for the throats to match up without overlapping (Mercedes may not need this).

    The 32/36 DGAV Weber fitted to 2 litre Cortinas and Escorts is usually pretty long lasting, but you should check for butterfly shaft wear/play when you look at it at the wreckers. If it has any play then don't buy it. You can buy kits to convert them to manual choke and you can also buy electric choke bits, so that you don't need the water hoses, etc. Second hand 32/36 Webers usually sell for about $60 (although they may be due for a price rise, since this has been the going rate for a decade or more).

    You can also buy new Weber 32/36 carbs in manual, auto, or electric choke forms (DGV, DGAV, DGEV respectively) from Hardiman Auto supplies in Bullecourt Ave Milperra. I think they're worth $400 or so. They also sell a larger 38 DGS/DGES carby which gives less economy but about 5% more power (it's not a progressive throat type).

    I hope this helps.

    Dave
    NZ Fleet
    1976 504 Ti
    1984 205 GT twin carb
    1991 205 SI 1.6GTI motor
    1994 106 Xsi
    1996 Mondeo V6
    Aus Fleet
    1955 203C
    1997 Civic Cxi (great allrounder- revy, flexible, nimble, comfortable , economical, simple and durable )

  3. #3
    Fellow Frogger! Paul Smith's Avatar
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    Thanks Dave,

    The problem I see is that (I should have explained myself better ) the Stromberg is a semi side draught and I assume the Weber is downdraught from pix I have seen - therefore I will need an adaptor of some sort. Are these made up by carby specialists usually?

    Water pipes are no problem as they are already there for the Stromberg.

    I will start looking at wreckers!

    Paul
    Paul Smith

    1974 DS23 EFI BW Auto
    1974 G Special 1220


    http://www.simplicitas.com.au

  4. #4
    Guru davemcbean's Avatar
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    Apr 2001
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    Paul Smith:
    The problem I see is that (I should have explained myself better ) the Stromberg is a semi side draught and I assume the Weber is downdraught from pix I have seen - therefore I will need an adaptor of some sort. Are these made up by carby specialists usually?
    This seems to be a popular conversion for Mercedes, so maybe some of the old Mercedes specialists stock the correct adaptor plate. If not, Redline might make one (they make heaps, for everything from Fords and Toyotas, to Peugeots and Renaults). Most generic parts stores (Auto One, Pep's, etc) can order in Redline adaptors.

    Dave

    <small>[ 20 February 2003, 10:09 AM: Message edited by: davemcbean ]</small>
    NZ Fleet
    1976 504 Ti
    1984 205 GT twin carb
    1991 205 SI 1.6GTI motor
    1994 106 Xsi
    1996 Mondeo V6
    Aus Fleet
    1955 203C
    1997 Civic Cxi (great allrounder- revy, flexible, nimble, comfortable , economical, simple and durable )

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