Headers off -- changing Spark Plugs -- what type are best?

Discussion in '1994 - 1995 Specific Tech' started by DJHA90, Aug 17, 2003.


  1. 94GTLaserRC

    94GTLaserRC Squint as you approach, lest you be blinded by my

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    Thanks..
    That explaination is fairly straight forward and Crystal Clear!
    RC
    #21
  2. FastmanGT

    FastmanGT Founding Member

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    Anytime man... :nice:
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  3. 94GTLaserRC

    94GTLaserRC Squint as you approach, lest you be blinded by my

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    Vib told me today, the 39xx are for ALum heads, and for my Stock heads, I need the REGULAR 24's by Autolite.

    The Mnf chart says 25's, and one step colder would be 24's.

    RC
    #23
  4. FastmanGT

    FastmanGT Founding Member

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    I think Vib is right on this, I had a brain fart I guess :bang: , the iron head plugs are the 25 - stock, 24 - iron plus power adder, gapping according to the power adder. Sorry about that... :doh:
    #24
  5. 94GTLaserRC

    94GTLaserRC Squint as you approach, lest you be blinded by my

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    Which is 0.032 as above, Correct?
    RC
    #25
  6. 94GTLaserRC

    94GTLaserRC Squint as you approach, lest you be blinded by my

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    Spark Plug Brands- Conversion Question

    I pulled off the spark plugs today, and they were NGK brand. The type was NGK R UR5

    Does anyone know what the AUTOLITE equivalent is?
    Im guessing it is the Autolite 25, since that is the MNF recommended one for my car.

    RC
    #26
  7. 94GTLaserRC

    94GTLaserRC Squint as you approach, lest you be blinded by my

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    Running good so far, and it seems strange, but it actually looks like the ECT may be running a little lower.
    RC
    #27
  8. Slow5.0

    Slow5.0 New Member

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    Sorry guys for bringing this post alive but I need help
    I just installed TW heads and I put 3923 plugs
    What is difference between 3923 and 3924
    And what gap is supposed to be on my TW heads N/A
    #28

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