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355 Firewall diagram

Discussion in '348/355' started by arkferrari, Dec 30, 2021.

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  1. arkferrari

    arkferrari Karting
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    Feb 9, 2004
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    Hot Springs, AR
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    B.F. Mitchell
    #1 arkferrari, Dec 30, 2021
    Can anyone provide a diagram of the rear firewall for a 99 355F1? I need to identify a corroded port from which a rubber hose has become disconnected. I believe it leads to the heater core but am unsure.
     
  2. Qavion

    Qavion F1 World Champ
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    Ian Riddell
    #2 Qavion, Dec 30, 2021
  3. arkferrari

    arkferrari Karting
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    Feb 9, 2004
    211
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    B.F. Mitchell
    #3 arkferrari, Dec 30, 2021
    The black rubber hose attaches to the "port" which is part of the large diameter metal pipe (?) which runs horizontal almost entire width of engine compartment. There are two pipes running horizontal; this port is part of the upper pipe. The port is about 3 inches to the left of center of compartment behind 4 braided hoses. I believe that antifreeze runs through the hose but am not certain. On the dropbox picture, the port is exactly where the disconnected hose appears on the upper horizontal "pipe" (?).
     
  4. MAD828

    MAD828 F1 Rookie

    Oct 8, 2011
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    Elliott Caras
    #4 MAD828, Dec 30, 2021
    Here are two pics of the F1 firewall. Hopefully it helps.

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  5. Qavion

    Qavion F1 World Champ
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    #5 Qavion, Dec 30, 2021
    Last edited: Dec 30, 2021
  6. taz355

    taz355 F1 Veteran
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    Grant
    #6 taz355, Dec 30, 2021
  7. yelcab

    yelcab F1 World Champ
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    Nov 29, 2001
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    Mitchell Le
    #7 yelcab, Dec 31, 2021
    Post a picture, or a better description of the hose in question. Someone here can tell you right off the bat.

    Hoses running to the front are

    Two power steering hoses about 1/2 inch
    Two hoses to and from the heater core about 18nn. One going to the coolant tank, one runs to the water pump. These connect to aluminum pipes so it is hard to imagine them corroded
    Two hard brake lines 1/4 inch
    Two hard AC lines 18mm

    All run over the fuel tank
     

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