Testarossa timing belt - "while you are in there" | FerrariChat
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Testarossa timing belt - "while you are in there"

Discussion in 'Boxers/TR/M' started by gaz1, May 24, 2025.

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  1. gaz1

    gaz1 Rookie

    Dec 7, 2006
    40
    Perth, Australia
    Full Name:
    Gary
    #1 gaz1, May 24, 2025
    Hi,
    Time has come to replace the timing belt in my 1990 Testarossa & before I discuss this major engine-out service with my mechanic I would appreciate any thoughts on things that are worth replacing "while you are in there".
    I have searched through the forums & in addition to the 2 x timing belt (154401) the 2 x bearings (116750) are worth replacing.
    I would appreciate any other suggestions on anything else that is worth replacing.
    Cheers,
    Gary.
     
  2. ryalex

    ryalex Two Time F1 World Champ
    Consultant Owner

    Aug 6, 2003
    25,928
    Las Vegas, NV
    Full Name:
    Ryan Alexander
    #2 ryalex, May 24, 2025
    Hoses? Water pump? Rebuild radiators?
     
  3. turbo-joe

    turbo-joe F1 Veteran

    Apr 6, 2008
    9,504
    southwest Germany, France ( Alsace ) and Thailand
    Full Name:
    romano schwabel
    #3 turbo-joe, May 24, 2025
    and:
    all seals
    what about the diff?
     
    ryalex likes this.
  4. carguy

    carguy F1 Rookie

    Oct 30, 2002
    3,424
    Alabama (was Mich.)
    Full Name:
    Jeff
    #4 carguy, May 25, 2025
    In addition to the above suggestions, I would say....Fuel Filters, Spark Plugs, Verify electrical continuity - from Dist-Cap Terminal to the end of Plug Wires, Check Plug-Extenders for cracks / breaks, Fuel Return Hoses. Cross-Over Hose between the fuel tanks. Trans/Diff Oil.
     
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  5. gaz1

    gaz1 Rookie

    Dec 7, 2006
    40
    Perth, Australia
    Full Name:
    Gary
    #5 gaz1, May 25, 2025
    Thanks for all the recommendations & suggestions.
    I had a look on the water pump diagram 26 & there are many components to the water pump (it doesn't seem to be a complete unit).
    I guess you would replace the seal (item 3 - would the 1990 Testarossa be 183759?) & bearing (133899)?
     

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