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Thread: K&N Airfilter carb readjustment

  1. 05-05-2022, 01:32 AM #1
    sk8erpope
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    K&N Airfilter carb readjustment

    I replaced the stock airfilter on my 1967 2.0 with a set of K&N filters.

    Does the carburetor have to be readjusted for this or even jets exchanged?

    Thanx for your help.

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  2. 05-05-2022, 01:50 AM #2
    uai
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    Ideally yes, do you have WBO2 / Lambda thread in the exhaust?
    Otherwise on a rolling road with a stationery exhaust analyzer.
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  3. 05-05-2022, 03:34 AM #3
    sk8erpope
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    Quote Originally Posted by uai View Post
    Ideally yes, do you have WBO2 / Lambda thread in the exhaust?
    Otherwise on a rolling road with a stationery exhaust analyzer.
    Unfortunately I don't have either of them
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  4. 05-05-2022, 04:23 AM #4
    edmayo
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    Did the idle speed change? If not you probably don't need anything, maybe a readjustment of the idle mixture screws. While the dyno test would be nice it may just be overkill.
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  5. 05-05-2022, 04:48 AM #5
    sk8erpope
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    Quote Originally Posted by edmayo View Post
    Did the idle speed change? If not you probably don't need anything, maybe a readjustment of the idle mixture screws. While the dyno test would be nice it may just be overkill.
    The idle speed doesn't change, but I runs a bit rough and unequally when accelerating.
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  6. 05-05-2022, 04:55 AM #6
    uai
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    You could just increase the idle jets and/or the mains to the next size but in the end it's easier and safer to have the mixture checked.
    You could give siggi a call he's got a rolling road and is not too far from you.
    But I don't know if he has all jets on stock.
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