aliveagain
Needs a life
Posts: 5033
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posted December 01, 2009 05:37 PM
spark plug gaps
At what point do you have to start closing the gaps on the plugs from stock setting?I've heard the turbo guys have to,but wasn't sure about big bore or spraying.
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Stuart Racing
Zone Head
N.H.R.A . Dragracing.
Posts: 999
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posted December 01, 2009 06:16 PM
I beleive it`s just the turbo`s and Nitrous bikes because they try to blow out the flame.....
Maybe you can side gap the plugs....But Don`t know about multi. ground straps though....
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dougmeyer
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moderated
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posted December 01, 2009 09:01 PM
It's not because the spark "blows out". It's because the higher density of the pressurized air and/or nitrous serves as an insulator blocking the energy of the spark. This is why blown stuff needs a very high energy ignition. If you have to close the gap you need more energy.
D.
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tcchin
Zone Head
Posts: 867
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posted December 02, 2009 12:37 AM
It's tough to close the gap on surface-discharge plugs, too... Note that fine-wire plugs have a lower ionization potential than standard electrode plugs, which can provide a more reliable spark for the same coil energy levels. Not that they could replace a high-energy ignition, but every little bit helps.
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KZScott
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posted December 02, 2009 01:47 AM
quote:
It's tough to close the gap on surface-discharge plugs, too... Note that fine-wire plugs have a lower ionization potential than standard electrode plugs, which can provide a more reliable spark for the same coil energy levels. Not that they could replace a high-energy ignition, but every little bit helps.
its only hard if you are worried about accuracy. something tells me a BFH could close the gap to less than an RCH 
i havent tried many plugs as i dont have a radical setup, but something i did notice was the factory cr9ekpa plugs have a ground strap that is contoured to match the electrode(i may have these terms mixed up) but on the cr10ek plugs i now run they are just flat. im guessing that the curved strap would be less susceptible to wear as theres a much larger area at the same gap, where the flat one is only gapped on one point, and as soon as it starts to wear the gap would increase. i dont exactly go touring the country on my bike so wear isnt an issue, but i thought it was interesting. a new set of plugs the way they come out of the box once a yr seems to be doing ok for me
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01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
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aliveagain
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Posts: 5033
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posted December 02, 2009 04:52 AM
So if I were to do a 100 wet shot(trust me,I'm not ready LOL)would I need to?
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I wondered why the baseball kept getting bigger. Then it hit me.
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NOX
Needs a job
PMRA / TMRC Super Street 4022
Posts: 3745
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posted December 02, 2009 08:09 AM
Pray.
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42 Wins
21 Runner-ups
2010 TMRC Super Street Points Champion
2010 PMRA Super Street #3 Points
2009 PMRA Super Street Points Runner-Up
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Sponsored by:
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KZScott
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posted December 02, 2009 11:40 AM
Ive done 80
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01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
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dougmeyer
Needs a job
moderated
Posts: 2713
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posted December 02, 2009 12:30 PM
Check your bank acount.
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It's not that I think you're dumb, it's just that so much of what you know isn't true....
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KZScott
Needs a life
high on speed
Posts: 7235
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posted December 02, 2009 01:27 PM
the numbers are all red in mine, is that bad? lol
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
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kaw-rick
Pro
Posts: 1167
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posted December 02, 2009 02:06 PM
My 14 loves the 100, i run the cr10eks. factory gap.
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MadMike
Moderator
FEAR THE BLACK FLAG!!!!!!!!
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posted December 02, 2009 05:36 PM
quote:
Pray.
hahahah
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aliveagain
Needs a life
Posts: 5033
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posted December 02, 2009 06:43 PM
quote:
It's not because the spark "blows out". It's because the higher density of the pressurized air and/or nitrous serves as an insulator blocking the energy of the spark. This is why blown stuff needs a very high energy ignition. If you have to close the gap you need more energy.
D.
But at a given hp,whether by turbo, nitrous or naturally aspirated,shouldn't it be the same amount of air/afr?
____________
I wondered why the baseball kept getting bigger. Then it hit me.
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oldkawboy
Needs a job
Posts: 2125
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posted December 02, 2009 10:31 PM
I converted my turbo ZRX over to stick coils but still had to reduce the gap to .024" for it to run good.
I know I need a high energy ignition but dividing the $$$ up between toys leaves very little to go around!
Dan
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NOX
Needs a job
PMRA / TMRC Super Street 4022
Posts: 3745
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posted December 03, 2009 06:30 AM
quote:
Check your bank acount.
LOL
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42 Wins
21 Runner-ups
2010 TMRC Super Street Points Champion
2010 PMRA Super Street #3 Points
2009 PMRA Super Street Points Runner-Up
6 Time Centerville Dragway Points Champion
Sponsored by:
Scorpion Helmets
Galfer Braking
AMSOIL
Steve's Speed Shop
Kawasaki Sports Center
Mickey Thompson Tires
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aliveagain
Needs a life
Posts: 5033
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posted December 03, 2009 07:04 AM
Hey,it's December and out of bike season,so I was just trying to pick some brains to see what I might learn.I would hope that others would not be discouraged from seeking advice.
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I wondered why the baseball kept getting bigger. Then it hit me.
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2000redrocket
Pro
Posts: 1662
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posted December 03, 2009 08:42 AM
 Edited By: 2000redrocket on 3 Dec 2009 16:43
it takes a given amount of voltage to jumo a free air gap. there is a chart someware we had in the navy for the turbin igniters. as pressure increases the amount of voltage needed to jump the same gap increases. i can imagin flooding a cylinder full of 100hp of gas and -120 degf nos could cause cylinder pressure to get close to snuffing the spark. just be safe. if you could increase the input voltage it could help some. i do not know how the ecu will be effected but a msd box has up to 400vdc on the primary side of the coil. maybe some of the good guys could rig something like this for the stick coils.
at votech we has a plug checker that we could crank up the pressure to see when the spark went out. someone needs to make a box and a stick coil and play.
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NOX
Needs a job
PMRA / TMRC Super Street 4022
Posts: 3745
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posted December 03, 2009 03:19 PM
I do know this, most all BIG hp shots, have aftermarket ignition.......
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42 Wins
21 Runner-ups
2010 TMRC Super Street Points Champion
2010 PMRA Super Street #3 Points
2009 PMRA Super Street Points Runner-Up
6 Time Centerville Dragway Points Champion
Sponsored by:
Scorpion Helmets
Galfer Braking
AMSOIL
Steve's Speed Shop
Kawasaki Sports Center
Mickey Thompson Tires
Catalyst Racing Composites
Conway Cycle
Syed Leathers
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