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Thread: Help Air Filter boxes

  1. 03-10-2020, 03:29 PM #1
    Simonjjb
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    Help Air Filter boxes

    I have searched and I think I found my problem. But I wanted to check with the experts.

    My car is a 1971 911S - early model built in 11/70. When I purchased the car it had its original engine, including MFI and a plastic Air Filter Housing. Given that it has some melted areas, I purchased a metal one as a replacement. Now, as the engine has been rebuilt to original specs the replacement metal housing does not fit on the metal boxes that connect to the intake stacks properly - the end clips do not align. It also seems the boxes are too low as the bottom of the air housing hots one of the MFI fuel lines. I think this is because the boxes are for carbs and the housing is for MFI or vice-versa. So looks like the clips are in different locations ? and perhaps that the boxes for carbs lower/shorter than for MFI? Were metal boxes made for both Carbs and MFI?

    Name: Beaumont all 4 housing end clps NG.jpg Views: 329 Size: 30.7 KB
    Name: Beaumont 911 hits fuel pipe housing (5).jpg Views: 300 Size: 23.8 KB
    Name: Beaumont 911 filter housing side clips OK.jpg Views: 317 Size: 40.0 KB
    Name: Beaumont 911 housing incrct lower chambers.jpg Views: 352 Size: 46.6 KB

    Hopefully I can just buy new boxes, and not the Air filter housing (that was expensive). So I think I need to get a set of the metal air boxes that will work with the air filter housing. Does this make sense? And if so, how do I determine which will work with my metal air filter housing. Or do I need to find a different air filter housing? Help.....
    1968 911L Coupe - Golden Green
    1971 911S Coupe - Gemini Blue
    1973 911S Targa - Signal Yellow
    1974 914 2.3 - Sunflower Yellow
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  2. 03-25-2020, 12:54 PM #2
    Oldskl60
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    Hi Simon
    I had an 70/71 S MFI airbox and base set up. The bases had a raised lip on the inner radius that the airbox would seat into. My understanding is that you have bases for the carbs. I'll see if I can find some pics. Great looking engine by the way!
    Tom
    @first_corner_fever

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  3. 03-25-2020, 01:20 PM #3
    Oldskl60
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    These look like what you need...

    https://forums.pelicanparts.com/pors...mbly-71-a.html
    Tom
    @first_corner_fever

    '73 911T, LHD Sepia Turd
    '72 911T, RHD returning to Light Yellow
    12sec '58 Callook Beetle
    '65 Kombi Ambulance
    '60 Ragtop Beetle
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