Carb rebuild 75 308GT4 | FerrariChat

Carb rebuild 75 308GT4

Discussion in '308/328' started by jlonmark, Jun 27, 2020.

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  1. jlonmark

    jlonmark F1 Rookie

    Mar 29, 2005
    3,175
    Beverly Hills, CA
    Full Name:
    Jay
    #1 jlonmark, Jun 27, 2020
    Hey guys, I seem to have an air leak in one of the carbs on my gt4 Dino. The car will sometimes backfire when you turn it off. I live in Los Angeles, so anybody local would be great. If not, I can always send them out. I assume I should probably rebuild all 4 at once? Any suggestions or recommendations would be much appreciated!

    Thanks!


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  2. miked

    miked Formula Junior

    Feb 7, 2001
    823
    Cincinnati, Ohio
    #2 miked, Jun 28, 2020
    My first inclination of a backfire out of the exhaust when turning the engine off is running too rich. The unburnt fuel in the muffler ignites from heat when the air flow stops. My GT4 use to do that when I bought it, a carb clean/tune solved the problem. My Z turn mower does it every time if I don't let it idle for 30 seconds before shutting it off. Sounds like a gunshot!
     
  3. kiwiokie

    kiwiokie Formula 3

    Aug 19, 2013
    1,464
    Tulsa, OK
    Full Name:
    John McDermott
    #3 kiwiokie, Jun 28, 2020
    Pierce Manifolds can rebuild them. Their lead time can be lengthy as they support a lot of racers that need quick turnaround but the results are impressive.


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  4. NoGoSlow

    NoGoSlow Formula Junior
    Silver Subscribed

    Jul 29, 2014
    634
    Republic of Texas
    Full Name:
    Mark Jacks
    #4 NoGoSlow, Jun 28, 2020
    I got a recent quote from Pierce for my 1975 GT4 set... $2,800 with one month turnaround.
     
  5. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    12,662
    San Carlos, CA
    Full Name:
    Mitchell Le
    #5 yelcab, Jun 29, 2020
    Gulp !!!
     
  6. sltillim

    sltillim Formula 3
    Silver Subscribed

    Nov 22, 2009
    1,505
    San Diego
    #6 sltillim, Jul 1, 2020
    They charge a lot. I went there in person and they had a ton of machinery and test equipment from the Weber factory, which does make them unique.
     

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