R300 2012 Duratec - Spark Plug Part Number?

[rotorwings]

I cannot find any mention of the spark plug part number in the user manual.

Does anyone know a ford or 3rd party part number?

Are there any 'fancy' plugs that make a difference?

[Dr Slotter]

Caterham specify NGK TR6AP (IIRC) but a common alternative is NGK BR7EFS which is what I happen to have in my Duratec. Don't bother with any 'fancy' plugs and the standard Ford Motorcraft ones are made for them by NGK, AFAIK.

[DCL]

Duratecs are normally fitted with a FOMOCO TR6AP13 plug. Other makes are available but can be quite expensive. If it's COP (and running OK) then I'd leave alone unless it's done a very high mileage. For higher states of tune, you can run a more conventional plug with a suitable temperature, but that might alter the starting characteristics.

[rotorwings]

Thanks All.

It's a 2012 and has only done ~5000miles. The only reason I was going to change the plugs was because it is listed in the 24 month service schedule.

It seems early to change them to me as well. I imagine that plug wear would be based on mileage more than time.

So the conventional wisdom would be to ignore the service schedule on this point?

[DCL]

Must type faster

[DCL]

You can take them out and look at them to tick the box, but be aware that they seat on a taper so should not be over tightened.

[rotorwings]

Understood. Of course the manual does not mention any torque figure for the spark plugs.

Is there a suggested torque figure?

[DCL]

Ford suggest 12 +-2 NM. Don't ask me the gap as I never found it out but new plugs come with around 1.1 mm which seems quite large.

Edit: Goolge says 1.3 mm

Edited by DCL on Thursday 12th March 10:57

[GreigM]

Like above, NGK BR7EFS - gave the most reliable starting. My car came with Denso Iridium IT24 which apparently the tuners like because it gives good numbers on the rollers, but I found it unreliable to get started with those.

[Dr Slotter]