[misip_spoolin]

Just put my 3rd set of plugs in.. These look rough with only 25/30k miles on them

 

[gtrplr71]

We use NGK G-power in our fleet fords at work and they seem very solid

 

[RichardT]

I thought I had heard of some new iridium, porcelain, super plug that was out and supposedly great.
Anyone heard of those?
i have 34k on mine, should I pull and check the plugs or just plan on it being part of the 30k maintenance program?

 

[scap99]

I thought I had heard of some new iridium, porcelain, super plug that was out and supposedly great.
Anyone heard of those?
i have 34k on mine, should I pull and check the plugs or just plan on it being part of the 30k maintenance program?

Motorcraft SP-534's

 

[mc4100s2]

I think you missed it.

 

[taubr unit]

Who here has used the ngk lfr7aix 2309 plug. Its a step colder iridium plug.

 

[CKNPRO]

Just pulled and check d my 2014 @ 10k miles. All were gapped at .0320. I closed them down to .0300 and chunked 'me back in. I'll probably run these for a while longer to see if new gap does anything with the occasional shutter. If not, maybe some motorcraft iridiums. I was surprised they were all consistently gapped after reading so many who found otherwise. Maybe I got a Wednesday truck

 

[scap99]

Just pulled and check d my 2014 @ 10k miles. All were gapped at .320. I closed them down to .300 and chunked 'me back in. I'll probably run these for a while longer to see if new gap does anything with the occasional shutter. If not, maybe some motorcraft iridiums. I was surprised they were all consistently gapped after reading so many who found otherwise. Maybe I got a Wednesday truck

I would hope you didn't gap them to 300 thousandths...

 

[CKNPRO]

What's a zero here and there.... .030

 

[Ahdznenz]

Motorcraft SP-534's

X2 great stuff.

 

[Trailboss]

Pulled mine yesterday, 31,250 miles on them. All gapped .032-.034 looked clean and perfect. Re-gapped to .030 and put em back in. Recheck in 20k. Have run Performance Improver fuel additive every 3 months since new.

 

[mikemetz82]

Pulled mine yesterday, 31,250 miles on them. All gapped .032-.034 looked clean and perfect. Re-gapped to .030 and put em back in. Recheck in 20k. Have run Performance Improver fuel additive every 3 months since new.
View attachment 25059

I take in you're on stock tune? What octane fuel have you been running?

 

[Trailboss]

Engine is bone stock. No tune. I run 87 octane and have never had an issue.

 

[BlueFlameFX4]

Motorcraft
SP-534

Is that what your running with your methanol too?

 

[scap99]

Is that what your running with your methanol too?

Damn right.

 

[BlueFlameFX4]

I may go back to them once these NGK plugs are done. Never had a problem with them once I recapped them.

Then the spark plug debacle was on with Brisk then NGK now MSD. What we need is hotter coils.

 

[VolForLife]

I may go back to them once these NGK plugs are done. Never had a problem with them once I recapped them.

Then the spark plug debacle was on with Brisk then NGK now MSD. What we need is hotter coils.

What we need is a colder plug with beefed up insulators. It's coming...stay tuned



- Stage3-UPR-LET racing league winner!

 

[GloverF150]

I pulled mine this weekend at 57,000 and replaced with sp-534s


Sent from my iPad using Tapatalk

 

[CKNPRO]

Replaced my originals with new sp534's. Then I noticed that mine came with sp534's from factory. Exact same plug and all of my old ones were gapped the same at .032. The new ones have not made a drastic difference that I can notice. Guess it was a blown $35

 

[Insaneboost]

I was gonna try some ngk's are the msd's that much better I've always used ngk's in my race Car?