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Thread: 1965 Solex P40 I Carburetor restoration question

  1. 02-25-2024, 08:16 AM #1
    DavidAustin
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    1965 Solex P40 I Carburetor restoration question

    I have just started restoration on a set of Solex P40 I carbs.
    I am interested in comments about what you think about the condition of the carbs and what the photos tell you. I guess the red stuff is something that has been added to prevent leaking.
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  2. 02-25-2024, 02:52 PM #2
    John Straub
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    Never seen the red stuff before. There is a paper type gasket that goes there.

    John
    1959 356 Coupe, 1600 Super, sold
    1960 356 Roaster, race car, SCCA, sold
    1960 356 Roadster, show car, sold.
    1962 356 Cab, show car, sold.
    1965 911 #301111, Red Book Vol 1 "Cover Car," owned 54 years.
    1967 911 #307347, bare-bones, some road wear, a little surface rust, and a few dents..., owned 14 years.
    1970 914/6GT, (Sold - ran the last three Rennsports)owned 30 years.


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  3. 02-26-2024, 05:14 AM #3
    NeunElf
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    The big potential problem is wear in the carburetor body around the throttle shaft. If air leaks around the shaft your mixture will be lean. This can be fixed by enlarging the holes in the carburetor body and installing bushings (a job for a good machinist who knows carburetors).
    Jim Alton
    Torrance, CA
    Early 911S Registry # 237
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  4. 02-26-2024, 08:04 AM #4
    1QuickS
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    Another real issue with Solexes is the accelerator circuit, especially the check valve assembly that is pressed into the throttle body. Corrosion and/or debris will inhibit proper operation and cleaning in-place is typically unsuccessful. See link to previous discussion:

    https://www.early911sregistry.org/fo...ex+accelerator

    I've serviced 25 sets of these Solexes and can provide tech support as requested. Even when mechanically restored, these carbs are tricky to adjust to make them behave.
    Paul Abbott
    Early S Member #18
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