Spark plugs to use? - SRT Forums

turbosrt@hotmail.com · 09-28-2009, 07:26 PM

Hey guys I recently changed out the factory champion spark plugs in my SRT and I noticed it runs worse with the Bosch Platinums so I measured the gaps again and even put the champions back in to compare and it runs and starts better with the champions. What do you guys run with or any suggestions? Thanks

AnsareStg0 · 09-28-2009, 07:32 PM

I've been using ngk 4306's sice i bought the srt in 05 and never had any problems!
I also gap them @ .35

UpShiftSRT4 · 09-28-2009, 09:35 PM

Platinums aren't recomended for boosted applications because the tips stay hot.

So run copper or iridium. I have NGK Iridiums @ .040''

dansrt4 · 09-28-2009, 09:59 PM

NGK stock or iridums

Johnny Rocket · 09-29-2009, 02:48 AM

Quote: Originally Posted by turbosrt@hotmail.com

Hey guys I recently changed out the factory champion spark plugs in my SRT and I noticed it runs worse with the Bosch Platinums so I measured the gaps again and even put the champions back in to compare and it runs and starts better with the champions. What do you guys run with or any suggestions? Thanks

Check under the hood for the white plate with the Champion and NGK part numbers. There is also a gap number listed for both, .050 The car came with Champion, but I replaced them with NGK. I have read the Champion work just as well.
JR

rosejm · 10-01-2009, 09:50 AM

Yup. Cheapo copper plugs replaced every 20k miles will be your best bet.

marthastricycle · 10-01-2009, 12:28 PM

I have NGK 4306's gapped at .038" and it's good,

nickyj249 · 10-16-2009, 11:20 PM

i use ngk 4306 on a 75shot and change them every oil change so every 3000 gapped at 35 i get them so cheap theres no reason not to

CONROY · 10-16-2009, 11:22 PM

4306 ftw.

indian srt-4 · 10-17-2009, 12:09 AM

stock champions here.

Adionik · 10-17-2009, 01:49 AM

I'm running 4306's. I think I might open the gap up to .040

indian srt-4 · 10-17-2009, 07:08 AM

Quote: Originally Posted by UpShiftSRT4

Platinums aren't recomended for boosted applications because the tips stay hot.

So run copper or iridium. I have NGK Iridiums @ .040''

i ran platinum for 5k miles...

red04 · 10-19-2009, 09:01 AM

Over the years turbododge's have hated platinum plugs. I recommend on using NGK vpower's. Never an issue with them.

turbo666 · 10-19-2009, 09:13 AM

Quote: Originally Posted by indian srt-4

i ran platinum for 5k miles...

Doesn't mean it was a good idea.

NGK 4306 plugs all day. For the average car I say gap to .035. I've had WAY too many issues with Iridium plugs blowing out on high boost applications, even on stock turbos on 22psi spikes. NEVER have had a issue with 4306's, even at 30psi on my old 30r with pump/meth. I've also always gotten less KR with 4306's too.