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Thread: Header size for 67S

  1. #1

    Header size for 67S

    I am removing the original tired heat exchangers to be replaced by Bursch headers on 67S. The displacement has been increased to 2.2L. What is the correct size header for this engine, 1 1/2 or 1 5/8?

    1967 911S

  2. #2
    I think Bursch should be able to tell you what the specs are for each. If you want some grunt, stay with the smaller. However, with an S motor, that's not what's it's about, eh?

  3. #3
    Goldmember ttweed's Avatar
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    Oct 2002
    La Jolla, CA
    1.5" is plenty big enough for that displacement.

    Tom Tweed
    Early S Registry #257
    R Gruppe #232
    Rennlist Founding Member #990416-1164
    PCA National DE Instructor
    Read my surf novel!

  4. #4
    I'd surely agree with Tom,.....1.5" headers are just perfect for engines of that displacement.

    Anything larger kills the bottom and mid-range power without adding anything to the upper end.
    Steve Weiner
    Rennsport Systems
    Portland Oregon

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