BALTIMORE410
Expert Class
Posts: 456
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posted February 07, 2009 08:24 AM
nitrous on a big bore kit
right now i have my bike at a performance shop getting my motor overhauled to a 1287 cc kit using je pistons which will have the compression up to around 13:51. now im no nitrous guru by all means but is it safe to spray at such a high compression ratio????
   
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woppi
Pro
Posts: 1362
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posted February 07, 2009 09:16 AM
 Edited By: woppi on 7 Feb 2009 17:19
wet or dry shot ???
you need colder plugs ------
woppi
____________
1st TFA Member / Austria !
" if it has wheels or titts - sometimes you will get troubles "
2000 Limited ZX12R NOS
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BALTIMORE410
Expert Class
Posts: 456
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posted February 07, 2009 09:28 AM
i havent made up my mind on which route i wanna go as far as wet or dry kit........ i was thinking along the lines of maybe a 50 shot first and see how that plays than maybe gradually step my game up to something bigger...
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BALTIMORE410
Expert Class
Posts: 456
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posted February 07, 2009 09:29 AM
what would be a good kit to go with?
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KZScott
Needs a life
high on speed
Posts: 7235
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posted February 07, 2009 05:09 PM
i ran 90hp on my 1287 with 13.5:1 cr. on pump gas. pistons and combustion chambers were prepped to remove sharp edges ect to get rid of hot spots, it was set up rich and lots of timing pulled. 1/4 mile use only. i dont advise it to anyone who doesnt setup their motor properly. JC has run 150 on a 1270. its all in the build prep and tune up. you can melt a motor with a 40 shot if you do it wrong, or run a big shot if you do it right.
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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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keith
Expert Class
Posts: 155
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posted February 08, 2009 08:12 AM
I put a 50 shot on my Muzzy 1270 kit and it made 265 rwhp on the dyno with 8 degrees taken out. Ran 9.02 on the strip. Then the motor launched one of its stock rods. So I got another stock motor, fitted Carillos, APE studs, 13:1 JE pistons and with a 50 shot less 6 degrees went 9.08. I've tried 60 and 70 shots but haven't gone any quicker but terminals are 157-160. Think I need to work on the fuelling a bit more this year. Bigger shots have increased spin and wheelies! so no quicker. Keith
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KZScott
Needs a life
high on speed
Posts: 7235
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posted February 08, 2009 08:31 AM
same here Keith(minus the rod inspection hole) 9.02 @157, 9.04 @161. got a progressive controller to try this yr
____________
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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Phantom13
Zone Head
Posts: 736
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posted February 08, 2009 02:38 PM
Nitrous is like any other power adder.... there's a LOT more than just the "amount" that you need to take into consideration.
It all starts with the nitrous system itself. A single stage dry 50 shot using a single fogger is more dangerous to the engine than a progressive multi-stage wet 80 shot using individual foggers per cylinder.
Nitrous distribution, flow efficiency, proper fueling, ramping, ignition timing, compression, piston and ring prep, gasket material and prep, cylinder stud torque setting, plug gap and heat range, tranny strength, etc..... a lot needs to be taken into consideration when going with Nitrous injection systems, ESPECIALLY on built hi-po engines.
It's REALLY easy to blow up an engine using even moderate amounts of Nitrous if you don't know what you're doing. Nitrous in small doses like a 20-30 shot will not do any significant damage unless you're completely off on the set-up and tune to begin with.... but with 50 shots and above, it starts to get complicated. The bigger you go, the more bigger the problems you need to deal with in order to keep the engine alive.
If you don't have an undercut tranny... I STRONGLY suggest you hold off on any nitrous before having the tranny work done. The stock gears can not handle race abuse from 200+rwhp and will start to wear down and begin to slip out of gear. This can be catastrophic while on the nitrous. Every single 200+rwhp ZX12R experiences gear slippage sooner than later with the stock tranny if it's raced often.
____________
"The only place Success comes
before Work is inside the Dictionary."
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BALTIMORE410
Expert Class
Posts: 456
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posted February 08, 2009 04:19 PM
FIRST THING I DID BEFORE THE BUILD EVEN STARTED WAS SEND OUT AN EXTRA I BOUGHT FROM MADMIKE ((THANKS MIKE)) AND HAD IT UNDERCUT
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KZScott
Needs a life
high on speed
Posts: 7235
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posted February 08, 2009 06:25 PM
quote:
Nitrous is like any other power adder.... there's a LOT more than just the "amount" that you need to take into consideration.
It all starts with the nitrous system itself. A single stage dry 50 shot using a single fogger is more dangerous to the engine than a progressive multi-stage wet 80 shot using individual foggers per cylinder.
Nitrous distribution, flow efficiency, proper fueling, ramping, ignition timing, compression, piston and ring prep, gasket material and prep, cylinder stud torque setting, plug gap and heat range, tranny strength, etc..... a lot needs to be taken into consideration when going with Nitrous injection systems, ESPECIALLY on built hi-po engines.
It's REALLY easy to blow up an engine using even moderate amounts of Nitrous if you don't know what you're doing. Nitrous in small doses like a 20-30 shot will not do any significant damage unless you're completely off on the set-up and tune to begin with.... but with 50 shots and above, it starts to get complicated. The bigger you go, the more bigger the problems you need to deal with in order to keep the engine alive.
If you don't have an undercut tranny... I STRONGLY suggest you hold off on any nitrous before having the tranny work done. The stock gears can not handle race abuse from 200+rwhp and will start to wear down and begin to slip out of gear. This can be catastrophic while on the nitrous. Every single 200+rwhp ZX12R experiences gear slippage sooner than later with the stock tranny if it's raced often.
very good info Mike  i give it a +1
____________
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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ninjakaw12r
Novice Class
Posts: 70
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posted February 09, 2009 06:40 AM
I sent you a email Baltimore 410. Let me know.
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Phantom13
Zone Head
Posts: 736
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posted February 09, 2009 07:26 AM
quote:
The bigger you go, the more bigger the problems you need to deal with in order to keep the engine alive.
Did I really just say, "more bigger"? LMFAO!!!
This is what happens when you forget to proof read your posts after going back and making word changes.
Meant to just say, "more".
____________
"The only place Success comes
before Work is inside the Dictionary."
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KZScott
Needs a life
high on speed
Posts: 7235
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posted February 09, 2009 08:21 AM
i thought it was for emphasis 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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keith
Expert Class
Posts: 155
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posted February 09, 2009 09:34 AM
I've got an undercut set of gears in now, my shift kill packed up and the the gearbox let go, not sure what the cause was but not changing when I hit the button can't be good!
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