Should 250 GT SWB Comp./61 #2939GT have a Cold Ram Air Pan? | FerrariChat
Buy

Should 250 GT SWB Comp./61 #2939GT have a Cold Ram Air Pan?

Discussion in 'Vintage (thru 365 GTC4)' started by miurasv, Oct 21, 2013.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, Skimlinks, and others.

  1. miurasv

    miurasv F1 World Champ

    Nov 19, 2008
    10,564
    Cardiff, UK
    Full Name:
    Steven Robertson
    #1 miurasv, Oct 21, 2013
    Last edited by a moderator: Sep 7, 2017
    250 GT SWB Berlinetta 2939GT is a Comp./61 (sometimes called SEFAC Hot Rod) version of the car and I was wondering if it, and all examples of the Comp./61, should have the cold ram air pan surrounding the Webers? I read today that the later examples were less extreme than the earlier ones.

    Pic of the engine bay of 2939GT taken in poor light from Cavalleria 250 GT SWB book with phone camera.
    Image Unavailable, Please Login
     
  2. DWR46

    DWR46 Formula 3
    Honorary

    Jun 19, 2012
    2,023
    #2 DWR46, Oct 21, 2013
    Steve: In my extensive research on the 1961 Comp Berlinettas, I found that ALL the cars were originally built with trays to seal the carburetors to the hood. All cars, except one (2455) were built with 46 DCF 3 carburetors. I suspect the Build Sheets for 2455, which indicates 40 DCL 6 carbs, are a typing error and it also had the 46 mm carbs. A 40 DCL 6 is just not enough carburetor to feed a Tipo 168/61 engine. By the way, some Build Sheets and many books also show 46 DCL carburetors; another typo, this model Weber carburetor does not exist.
     
  3. miurasv

    miurasv F1 World Champ

    Nov 19, 2008
    10,564
    Cardiff, UK
    Full Name:
    Steven Robertson
    #3 miurasv, Oct 21, 2013
    I knew you would know, Dyke. Thanks for your reply. :) Can you see which Webers 2939GT has from the pic above?
     
  4. DWR46

    DWR46 Formula 3
    Honorary

    Jun 19, 2012
    2,023
    #4 DWR46, Oct 22, 2013
    Steve: just a guess, but by the appearance of the velocity stacks, I would speculate that they are 46's.
     
  5. Boudewijn

    Boudewijn F1 Rookie
    Lifetime Rossa

    May 15, 2003
    4,133
    The Netherlands
    Full Name:
    Boudewijn Berkhoff
    #5 Boudewijn, Oct 22, 2013
    Last edited by a moderator: Sep 7, 2017
  6. Boudewijn

    Boudewijn F1 Rookie
    Lifetime Rossa

    May 15, 2003
    4,133
    The Netherlands
    Full Name:
    Boudewijn Berkhoff
    #6 Boudewijn, Oct 22, 2013
    Last edited by a moderator: Sep 7, 2017
  7. miurasv

    miurasv F1 World Champ

    Nov 19, 2008
    10,564
    Cardiff, UK
    Full Name:
    Steven Robertson
    #7 miurasv, Oct 22, 2013
    Last edited: Oct 22, 2013
    Thank you again, Dyke and Boudewijn for the pictures. I've just bought the Cavalleria book on the 250 GT SWB and the colour photography of 2939GT is superb, and the car looks stunning. However, the fact that the pictures are of a car without its cold ram air pan is a disappointment. I wonder if they took it off to show the engine and Webers off better? Surely not.

    Does 2939GT have the engine from 2445GT? See tomgt's post 24 here: http://www.ferrarichat.com/forum/vintage-thru-365-gtc4-sponsored-redline-restorations/11241-drogo-cars-2819-2053-2735-2445-a-2.html
     
  8. Dustin Wetmore

    Dustin Wetmore Karting

    Mar 31, 2011
    82
    Neenah, Wisconsin
    Full Name:
    Dustin Wetmore
    #8 Dustin Wetmore, Oct 23, 2013
    Please correct me if I am in error. If the build sheet is available see the line on the Foglio Montaggio Motore page.

    Carburatore tipo- Weber 36 DCL 3 No.-3

    Presa d' aria - trombette 128C/18688 e vasca

    This came from the build sheet for a LWB California Spyder and the text in question is
    e vasca.

    Trombette designating the stacks.
     
  9. tomgt

    tomgt F1 Veteran
    Rossa Subscribed

    Feb 22, 2004
    7,019
    Netherlands
    Full Name:
    Tom Wiggers
    #9 tomgt, Oct 23, 2013
    I have the build sheet of 2939GT:

    Weber 46 DCF No: 3
    Presa d' aria: trombette
     
  10. miurasv

    miurasv F1 World Champ

    Nov 19, 2008
    10,564
    Cardiff, UK
    Full Name:
    Steven Robertson
    #10 miurasv, Oct 23, 2013
    Would the cold ram air pan be indicated on the build sheet? Did you actually find out if 2939GT has the engine from 2445GT?
     
  11. DWR46

    DWR46 Formula 3
    Honorary

    Jun 19, 2012
    2,023
    #11 DWR46, Oct 23, 2013
    The cold air pan is not normally noted on the Build Sheets.
     
  12. tomgt

    tomgt F1 Veteran
    Rossa Subscribed

    Feb 22, 2004
    7,019
    Netherlands
    Full Name:
    Tom Wiggers
    #12 tomgt, Oct 23, 2013
    correct, on no other build sheet of comp 61 cars I have they noted
     

Share This Page