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Best spark plugs?



  Clio 1.6L 16V
I have to change the spark plugs to my K4M and I was wondering what are the best spark plugs that I can buy for the K4M??, thanks for the help.

I was thinking maybe the NGK Iridium BKR6EIX what do you think about it?
 
  RS RIP
NGK are really good, yep. Do'nt know about your type-nr. that you would need. I have the NGK plugs on my RS , were around 20pounds a piece though :eek:
 
  ITB'd MK1
not a fan of any iridium plugs, they break up with the slightest hint of detonation. If you're running without a cat, use NGK BCPR6ES, if you have a cat, use PFR6E-10
 
  ClioI Ph.3 1.6 16V
I run Denso IK22 in mine and I´m very satisfied with them. Before without the cams I had the hotter IK20 that are pretty similar to the NGK BKR6EIX.

Other alternative for you NGK PFR6G-9 (double platinum type)
 
  Clio 1.6L 16V
I run Denso IK22 in mine and I´m very satisfied with them. Before without the cams I had the hotter IK20 that are pretty similar to the NGK BKR6EIX.

Other alternative for you NGK PFR6G-9 (double platinum type)

What's the difference between the hotter one and the other? :D
 
  ClioI Ph.3 1.6 16V
Hotter means, that it will be hotter in the engine under same conditions, because it won´t conduct the heat into the cylinderhead as good as a colder type will.

If the combustion ist hotter (e.g. caused by real tuning like cams or charging), it´s not bad if you go one (or mybe more) step colder, to avoid uncontrolled glow-ignition or knock.
 


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