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Thread: spark plug gap

  1. #1
    gaz71's Avatar
    1.8T Quattro Sport AJL

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    spark plug gap

    This may have been asked before but what is the ideal spark plug gap for a 1.8 tqs AJL 180bhp. The manual says 0.8mm but when serviced it has had 0.7mm fitted.

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  3. #2
    jcb
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    chipped, any mods?
    what plugs?

  4. #3
    gaz71's Avatar
    1.8T Quattro Sport AJL

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    Quote Originally Posted by jcb View Post
    chipped, any mods?
    what plugs?
    Not chipped yet. N75K Valve and 710N DV. Standard airbox and filter. Spark plugs fitted at service NGK PFR6Q with 0.7mm gap. Also have some Autolite APP 3923 which are in good condition, gapped at 0.8mm.
    Last edited by gaz71; 24th August 2009 at 11:36. Reason: additional info

  5. #4
    "Stick a V8 in it!"

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    the figure i see used a lot is 0.028", which is just over 0.7mm.

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
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  6. #5
    Broken Byzan's Avatar
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    If chipped 0.7mm if not 0.8mm is fine

  7. #6
    gaz71's Avatar
    1.8T Quattro Sport AJL

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    Had a look at the Autolite application list, http://www.autolite.com/pdf/auto_passcar1_0406.pdf

    Have removed the NGK plugs that were fitted at the service and have fitted the Autolite APP 3923 with a 0.032in gap (0.8mm).

 

 

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