spark plugs?

tromspert

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Oct 19, 2014
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Hey guys I have a 2j swap that's na-t in my mk3 and was wondering what spark plugs you guys usually use? who has the best numbers and performance with them?
thanks in advance
 

tromspert

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Oct 19, 2014
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hvyman;2036788 said:
Ngk coppers part number 4644.

Engine or harness doesn't really matter.
Copper? I was thinking I'd see platinum or something haha. Good to know. Any reason why?
 

figgie

Supramania Contributor
Mar 30, 2005
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Off the spark plug material available, Copper is the best electrical conductor for spark plugs. They also move heat fast.

Iridium, any other *ium based plugs are a waste of $.

The K.I.S.S does apply to these cars ;)
 

MarkIII4Me

Project OVERKILL!!!
Apr 10, 2005
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In my experience I find that Iridium's and Double Platinum plugs are standard equipment on vehicle's where the intake plenum needs to be removed in order to service them. We're talking 3+ hours book time. So the manufacturers use these expensive plugs, (NGK Lasers anyone?), because they last an average of 90k-120k miles. Not because they are good conductors. For the most part, our plugs are relatively easy to get to. Very easy if you have coil on plugs and an FFIM. Either way, go with coppers.
 
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Nick M

Black Rifles Matter
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I find that Iridium's and Double Platinum plugs are standard equipment on vehicle's where the intake plenum needs to be removed in order to service them. We're talking 3+ hours book time. So the manufacturers use these expensive plugs, (NGK Lasers anyone?), because they last an average of 90k-120k miles. Not because they are good conductors.
I was going to share few fundamentals as there are always new people, and they are forced to read a lot of bullshit because they don't any better. You are correct. The plugs last longer and paying that big money every couple of years for a "tune up" will drive away customers. Even without Scotty Kilmer sounding the alarm for you.