100 shot plug gap??

[killrb]

So I just got my Zex kit with Brenspeed tune and will be running a 100 shot. Plugs are the one piece Brisk that are a heat range colder. I also have MSD coil packs. I was told that .035-.037" gap is about where I want to be. Anyone else have suggestions?

95% of my driving is off the bottle. '08 automatic GT has cams, headers, CAI, deletes, etc. Would like to keep the gap as wide as possible without having issues when using the bottle at the track.

Thanks,
Brandon

 

[Wheelman]

So I just got my Zex kit with Brenspeed tune and will be running a 100 shot. Plugs are the one piece Brisk that are a heat range colder. I was told that .035-.037" gap is about where I want to be. Anyone else have suggestions?

From what I remember .035 is a good starting place. Give Brenspeed a quick call and ask for Seth to be sure.

From Ny-Trex Nitrous 101 page
Generally you want to use copper spark plugs or iridium as opposed to the stock platinum ones. You also want to reduce the gap from the stock 0.050" down to 0.035"-0.040". I've received a couple notes on why you use a smaller gap. "The reason you want a smaller gap is because of ionization. If you change from the typical air (78%nitrogen, 21% oxygen)/fuel ratio, a given gap requires more energy to ionize the mixture, resulting in less energy in the spark, if you even get a spark. You could also increase the coil voltage instead of decreasing the gap, but I think using a smaller gap would be preferential since the spark time will be smaller." and also this message: "The reason that you will close the gap on your spark plugs is because when nitrous is added, it raises the cylinder pressure, much like a supercharger. Therefore "blowing" the spark out. When you close the gap it cannot put out the spark as easily."

 

[05xgt]

N2O has been known to blow the candles out. Aren't our ign systs multiple spark though?

 

[Green08BulliTT]

even if our systems are multi spark they wont do it threw out the rev range. multi spark systems usualy do this in the lower rpms only and not under higher rev conditions.

 

[killrb]

Thanks, Guys. I'm put them in a .037" and will call it good.

Brandon

 

[08gt4u]

if you got them from brenspeed they come pre gap to .035.when i order mines they told me they gap them before shipping but feel free to check and let me know.i didnt check mines after received.

 

[silverstang07]

im running .35, just stepped up to a 125 shot yesterday and made a test hit on the street, no problems yet