NGK TR6

[Fast Ford]

Are NGK TR6 plugs one step colder than 07-09 factory platinum plugs?

 

[RedVenom48]

I believe they are, but i have to say if you can grab the TR7ix

I threw alot of mixed fuel, torco and a few questionable fill ups and never had any misfires. Plugs visually looked like crap after 15k, but still ran smooth.

Tough plug

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[fullboogie]

According to BJ, they are not.

 

[NightRide]

I've used them for years at 700 but regularly change them. It Used to be all anyone recommended a few years ago until these more expensive plugs came along.

 

[usafimj]

Hate to thread jack but will TR6's work well at 540hp if the car is only used between April-Nov.

 

[SCGallo2]

Hate to thread jack but will TR6's work well at 540hp if the car is only used between April-Nov.

Yes, TR6s are a good fit with your mods.

I have run both NGK TR6 & TR7IX up to 20psi of boost when gapped at .028 and both performed flawlessly. TR6s do need to be replaced more frequently.

 

[Catmonkey]

Pretty sure TR-6s cost me a head gasket running the Texas Mile.

There are better plugs.

 

[gt347mustang]

Pretty sure TR-6s cost me a head gasket running the Texas Mile.

There are better plugs.

Care to explain how it was the plugs fault?

 

[Catmonkey]

Care to explain how it was the plugs fault?

https://www.svtperformance.com/forums/threads/melted-electrode.895853/

 

[Imatk]

I run the TR6... what would be a better option?

 

[65type1]

I run the TR6... what would be a better option?

Motorcraft SP-471
Brisk Racing GR14YS

 

[merkyworks]

How do Brisk plugs compare to NGK's?

 

[NightRide]

I think it also depends a lot on if you road course the car or never change them. If swapped yearly it shouldn't matter, the gap is what's important.

 

[V8Flexin]

At what point when modifying do you need to change plugs and how often? Now @ 36k miles with light mods and likely running factory plugs.

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[Catmonkey]

If you're running at least 15 psi of boost, you want one range colder plug at a minimum. TR-6 are in the stock heat range. Nothing wrong with factory iridium for stock heat range, but you want to tighten up the gap based on boost range. BJ has a good write up on gap recommendations, and spark plugs, on VMP 's website under the VMP Garage section.

 

[V8Flexin]

If you're running at least 15 psi of boost, you want one range colder plug at a minimum. TR-6 are in the stock heat range. Nothing wrong with factory iridium for stock heat range, but you want to tighten up the gap based on boost range. BJ has a good write up on gap recommendations, and spark plugs, on VMP 's website under the VMP Garage section.

OK thanks I'll go check that out.

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[Imatk]

I change my TR6 plugs every oil change (every 7k miles or so) how often should you change the motorcraft or brisk plugs?

 

[usafimj]

Will NGK Laser Iridium Performance Spark Plugs (4477) work with my set up? A buddy of mine is selling a set of 8 for $50. Doesn't seem like a bad price just figure I'd ask.

http://www.americanmuscle.com/ngk-sparkplugs-4477.html