Spark plug gap at 22.5 lbs of boost?

[rfiresnake]

I have my car at the shop getting tuned and i'm having some spark blow out at the top of my pull ... Right now i'm running tr6s gapped around .026-.028. should i close the gap or try different plugs? my setup is

e85
kenne bell 2.2 22.5 lbs of boost
stock wire/coils

 

[04sleeper]

I would close the gap to .024.

What plugs are you running?

 

[70SCJ]

I have my car at the shop getting tuned and i'm having some spark blow out at the top of my pull ... Right now i'm running tr6s gapped around .026-.028. should i close the gap or try different plugs? my setup is

e85
kenne bell 2.2 22.5 lbs of boost
stock wire/coils

What are the symptoms of the spark blow out? What rpm?

 

[Driver500]

I went a step colder than tr6 once I reached that boost level.

 

[rfiresnake]

Ngk tr6's copper. I wasn't there for the pull. I got a call from my tuner telling me that the car
Was having spark blow out on the top end. What is the benefit of switching plugs? I figured with e85 that I didn't have to drop another heat range

 

[04sleeper]

I have run the BR7EF plugs and gapped out of the box they were fine.

 

[rfiresnake]

What kind of boost are you running? Aside from those plugs being a step colder
Does anything make them less prone to blow out?

 

[me32]

I have run the BR7EF plugs and gapped out of the box they were fine.

I agree with this it should solve your problem.

 

[spyder1337]

Gap closer, many members have lost 10-20 hp by going with br7ef's. Try .024 as that heat range with e85 is fine, many are using it without e85 at that boost.

 

[04sleeper]

What kind of boost are you running? Aside from those plugs being a step colder
Does anything make them less prone to blow out?

22 psi.

The BR7EF's have a recessed tip to help avoid blow out and reduce the chance of pre-detonation.

The TR6 has a protruded tip.

I personally like the extra safety margin with the 7's over the 6's. But to each there own.

 

[me32]

Gap closer, many members have lost 10-20 hp by going with br7ef's. Try .024 as that heat range with e85 is fine, many are using it without e85 at that boost.

This is the 1st I've heard of this..what cars I've ran both the b7 an tr6 an no difference in number gas or E85. This is on a gt500. So what cars claim to lose hp.

 

[spyder1337]

Not sure if you're familiar with forum members Broke7 (runs 9's on stock irs with a KB) and Badasssvt03 fastest ported eaton/nitrous cobra ever... both have similar claims.

 

[Silver03Termi]

Ngk tr6's copper. I wasn't there for the pull. I got a call from my tuner telling me that the car
Was having spark blow out on the top end. What is the benefit of switching plugs? I figured with e85 that I didn't have to drop another heat range

you dont want to go a step colder, due to the decrease in temperature the combustion chamber sees, a plug slightly warmer than the tr6 is a better idea. That is what ive been told by an engine builder/engineer.

 

[me32]

Not sure if you're familiar with forum members Broke7 (runs 9's on stock irs with a KB) and Badasssvt03 fastest ported eaton/nitrous cobra ever... both have similar claims.

very interesting, maybe its there setup. cause for me changed nothing for me.

 

[Janstang]

BR7EF's gapped to .020 on mine.. Gap them down til it stops blowing the spark out.

 

[Yaadman_GT]

BR7EF @ .019. 22lbs no problem! I tried the TR6s and the car didnt like them. Just a note, when you go to the store and get either, the BR7EF is NGK stock # 3346 and the TR6 is 4417.

 

[SVTDice]

I have BR7EF's Absolutely great plug. Even though I'm not running E85 (Yet) This is the plug of choice for me will be.

 

[jordan0806]

22 psi.

The BR7EF's have a recessed tip to help avoid blow out and reduce the chance of pre-detonation.

The TR6 has a protruded tip.

I personally like the extra safety margin with the 7's over the 6's. But to each there own.

THis!...

had that same problem this weekend and Kurgan made me switch and gapped the plugs @ .025....no spark blow out...