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Best Sparkplug For Forced Induction?

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Old Dec 23, 2002 | 08:13 AM
  #1  
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Default Best Sparkplug For Forced Induction?

I have been having this hesitation problem at the top of third that still doesnt go away. I am almost 100% conviced its the sprakplugs that Iam using. Iam using the BERU silvertip plugs. They worked great when my car was natuarlly asperated but I guess they dont work too well under boost. I took out the plugs cleaned them and regaped them to about 27. I noticed some improvement but it still giving some hesitation. So Iam giving up on these plugs.

I had this same problem in my previos car which was turbocharged. I purchased a set of splitfires and the second I was on top of a gear getting into high boost the car would start hesitating.

What plugs do you guys recomend?
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Old Dec 23, 2002 | 01:03 PM
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Default Re: Best Sparkplug For Forced Induction?

TTT
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Old Dec 23, 2002 | 01:08 PM
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Default Re: Best Sparkplug For Forced Induction?

You should try out the NGK TR6's, they are made for boost/nitrous applications...

They stay way cooler than other plugs...
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Old Dec 23, 2002 | 01:14 PM
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Default Re: Best Sparkplug For Forced Induction?

i run autolite 103's

they are only like a dollar a piece and last about 10k miles... work fine for me.
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Old Dec 23, 2002 | 01:14 PM
  #5  
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Default Re: Best Sparkplug For Forced Induction?

How much cooler are they from the stock plugs. I got a recomendations to use my stock AC Delco plugs but to gap them down to .040. Any Comments on this recomendations?
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Old Dec 23, 2002 | 03:26 PM
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Default Re: Best Sparkplug For Forced Induction?

stock is 105 so 2 heat ranges i guess.

i dont know of anyone that reccomends ac plugs for FI but i would gap any plug to around .035
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Old Dec 23, 2002 | 05:05 PM
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Default Re: Best Sparkplug For Forced Induction?

I run tr6s have them gapped at 40. I use to have that to till I gaped mine smaller. Maybe your running lean <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />
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Old Dec 23, 2002 | 07:23 PM
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Default Re: Best Sparkplug For Forced Induction?

How much boost are you running? A plug recommendation is no good without that info.

I'm running about 15 lbs total on my 01 L ad I use NGK BR7EFs gapped at .038". For less than that, the NGK TR6s would be fine.

Dan
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Old Dec 23, 2002 | 07:27 PM
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Default Re: Best Sparkplug For Forced Induction?

Anybody have a link to the plugs SJH posted awhile back on tech-ls1.com? They would bleed above a certain pressure.

Justin
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