Another W202 Spark Plug Thread...

Discussion in 'Engine' started by Spinal, Jun 22, 2010.

  1. Spinal

    Spinal Hardcore MB Enthusiast

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    Uxbridge
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    Smart, S320 and C180 with 3-pointed stars amongst others
    A few quick questions....

    What spark plugs would you recomend for a 1996 "mid-facelift" W202 Esprit ?(i.e. some facelift features, but mostly pre-facelift).

    Is there a difference in spark plugs between the pre and post facelift? (i.e. should I be looking for specific plugs, or any plugs for a W202?)

    Are the NGK Iridium "the best" (subjective, I know) there are, or is there something better?

    Is there a difference between NGK Iridium and NGK Trade?

    Essentially, I need the plugs to be 110% reliable, not to seize in the desert when I may need to pull them out to dry out the cylinders (we are crossing a few streams futher South), and to be as efficient as possible (it is a rally after all!)

    Finally, I'm going to change the leads while I'm at it... should I got for OEM, Bosch or something else? I've seen some advertised as "high performace" silicone coated ones, but I'm suspicious... again, reliability is the main concern, with performance coming a close second :)

    TIA!
    M.
     
    Last edited: Jun 22, 2010
  2. Will

    Will MB Club Veteran

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    What engine are you referring to - is your car a C180? If so, you have an M111. Just fit a set of the standard plugs IMHO, Bosch or one of the other OE brands will be fine. Inspect/check the HT leads before shelling out on new ones, they might well be perfectly ok.
     
  3. Will

    Will MB Club Veteran

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    Car:
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    BTW, spark plug fitment details should be on the slam panel under the bonnet or in the owner's manual IIRC.
     
    1 person likes this.
  4. OP
    OP
    Spinal

    Spinal Hardcore MB Enthusiast

    Messages:
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    Location:
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    Car:
    Smart, S320 and C180 with 3-pointed stars amongst others
    It is a C180, M111. Not sure if its the 920 or the 921 - will check later...

    I'm tempted to just fit a pair of NGK trade ones (£8 for a set of 4) and see if the lumpy acceleration smoothens out a bit before shelling out for a set of iridium plugs & new leads...

    On a side note; if anyone has spark plugs they are selling, for any car really, on the cheap side, I would be interested. (Planning to use them as "trading" material while on the rally... so really, the cheaper the better... looking for about 20 plugs...)

    M.

    EDIT:
    For future reference:
    NGK Plugs: http://www.ngkpartfinder.co.uk/
    Model Detail Engine Type / Additional Info Year Part No Stock No
    C180 1.8 M111.920 / 202 Series 93 –> 08/95 BCP6E 5860
    C180 1.8 M111.921 -->027721 / 202 Series 09/95 –> 08/00 BCP6E 5860
    C180 1.8 M111.921 027721--> / 202 Series 09/95 –> 08/00 BKUR5ET 2789
    C180 1.8 M111.952 / 203 Series 09/00 –> IFR6D10 5344
     
    Last edited: Jun 22, 2010
  5. OP
    OP
    Spinal

    Spinal Hardcore MB Enthusiast

    Messages:
    4,793
    Joined:
    Sep 14, 2004
    Location:
    Uxbridge
    Car:
    Smart, S320 and C180 with 3-pointed stars amongst others
    Ended up lifting the hood on a coffee break... under the hood, I'm told:

    BOSCH F8DC4
    BERU 14F 8DU4
    CHAMPION C11YCC

    (which also means I have the 921 engine from the facelift model)

    While I don't know the others, the F8DC4 is a non-resistor spark plug which corresponds to:
    NGK - BP6EFS
    Denso - T20EP-U

    Now, my questions... bosch no longer make non-resistor plugs...
    in fact, I was under the impression that resistor plugs are the way to go...

    Any advice? Should I be looking for the NGK non-resistor plugs, or go with the newer replacement resistor plugs?

    M.
     

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