Nitrous spark plug help.
Nitrous spark plug help. Need some help on what plugs to run. Right now I'm running NGK iridium plugs. Seem to be working real great, nice a brown. Should I change? If so to what, and what gap?
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One of the most common plug that we recommend is the NGK BR7EF in fact it is what I Personally run in my truck. I have played around with a couple of different heat ranges to see if i could tell a radiance off nitrous and other than a couple of HP on the dyno I could not tell while driving the truck at all. I do also recommend gaping them to .030 - .035.
Trey
Trey
Last edited by NitrousExpress; Sep 25, 2013 at 05:34 PM.
One of the most common plug that we recommend is the NGK BR7EF in fact it is what I Personally run in my truck. I have played around with a couple of different heat ranges to see if i could tell a radiance off nitrous and other than a couple of HP on the dyno I could not tell while driving the truck at all. I do also recommend gaping them to .030 - .035.
Trey
Trey
http://www.summitracing.com/parts/ngk-4177
Thanks. Well I sat on the phone with summit and called NGK and this is what we came up with. 4177 - NGK V-Power Spark Plugs. Because my autolite 5425s were a 4 on ngk heat scale, we went down 2 sizes from that to a 6. Let me know if this sounds correct.
http://www.summitracing.com/parts/ngk-4177
http://www.summitracing.com/parts/ngk-4177
The NGK part number for the BR7s is 3346. Most guys say they use those up to a 175 shot.
For quite some time the TR6 was the nitrous plug of choice for LS guys, but as the community has learned more about reading plugs and detonation failures, they have migrated to the Br7s and B8es plugs respectively.
I had a pic somewhere if a tr6 and a br7 side by side somewhere.
Tr is a projected tip as speed said. The BR is a nonprojected tip that is much better for nitrous and boost applications where detonation is a concern.
Tr is a projected tip as speed said. The BR is a nonprojected tip that is much better for nitrous and boost applications where detonation is a concern.
BR7 is on the left. TR6 on the right.
I went through the whole TR6 vs BR7 battle when doing the nitrous (TR6 is what I had) and bottom line for me....if the BR7 cost me like 2 hp, and lasts only half as long as the TR6 then that's more than worth it for the peace of mind knowing that I can run my nitrous much more safely