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Injected Performance 350z .. 8sec 1/4mile VIDEO!

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Old Apr 8, 2008 | 09:18 AM
  #81  
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Hal, Any hints on how you got the rear to be so stable at launch. I dont see much squat, much front end lift or twist? Launches really good!
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Old Apr 8, 2008 | 11:19 AM
  #82  
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Your club has their own location - that is awesome, and a nice looking place! Thank you for the offer, I'll keep it in mind.

We have a grill and we can bring food, so if any of your guys can cook we would be happy to host a little minimeet at our rig. Also we can always use someone to help video
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Old Apr 8, 2008 | 11:27 AM
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Originally Posted by MardiGrasMax
Hal, Any hints on how you got the rear to be so stable at launch. I dont see much squat, much front end lift or twist? Launches really good!
Thanks, we have only had a few trips to the track to dial it in, but it is doing well. It does squat and lift, but nothing drastic. We don't hit the car real hard at the line due to being on a drag radial and to help keep the stock rear alive (currently using stock rear and stock lsd - though we carry a spare rear w/ cusco lsd in the trailer just in case). Boost is ramped in with front wheel speed.
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Old Apr 8, 2008 | 12:02 PM
  #84  
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I saw your 8.9 run =]
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Old Apr 8, 2008 | 01:43 PM
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Great job man. Car is getting faster and faster. It was nice taking a look at it at SEMA. Keep it up.
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Old Apr 8, 2008 | 04:09 PM
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Originally Posted by coachk
I'm pretty sure the unlimited street is for 4,6,8 cylinder cars with aftermarket trannies and power adders

right....I think that's the one. If you read the class specs for V8 engines, they look like they copied and pasted the rules straight from the NMRA EFI Renegade class.
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Old Apr 8, 2008 | 04:11 PM
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Originally Posted by Hal@IP
No meth. The converter was intentionally built tight and requires nitrous to set the stall. After that, I turn into a nitrous junky and refuse to turn it off
100 shot

Were you using the "squeeze" on your 8.99 run? I didn't think you could run multiple power adders in that class.
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Old Apr 8, 2008 | 04:11 PM
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Originally Posted by helldorado
Hal, our club's shop location is barely 10 minutes from Atco, just 6 miles down the road. If there's any assistance we can provide in terms of lift, air or tools, let us know, we'd be more than happy to help you guys out while you're in town over the weekend.



At the very least, we'll definitely come out and support and we can give you a hand if you need info for logistics, food, etc... Drop me a PM if we can help!
Baller! That's badass, I wish my club had a garage with lifts
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Old Apr 8, 2008 | 05:21 PM
  #89  
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Congrats Hal & crew

Darren
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Old Apr 8, 2008 | 09:20 PM
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Originally Posted by Hal@IP
April 26-27, Atco
May 3-4, Englishtown
Qualifying is on Saturday, Eliminations on Sunday

Taken from: http://www.nopi.com/nopims/dsp_TD.php?vn=SD02
Englishtown here i come (marks the calender)
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Old Apr 9, 2008 | 09:11 AM
  #91  
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Originally Posted by QuadCam
Were you using the "squeeze" on your 8.99 run? I didn't think you could run multiple power adders in that class.
It is a little vaque, but you can use power adderS. Some of the other classes are more specific but for unlimited street its power adderS
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Old Apr 9, 2008 | 09:16 AM
  #92  
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Originally Posted by Hal@IP
No meth. The converter was intentionally built tight and requires nitrous to set the stall. After that, I turn into a nitrous junky and refuse to turn it off
100 shot

Would you guys mind explaining how the nitrous sets the stall. Is that done thru the Haltech
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Old Apr 9, 2008 | 03:05 PM
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Originally Posted by coachk
Would you guys mind explaining how the nitrous sets the stall. Is that done thru the Haltech
I think they are really meaning "converter flash." I'm sure that converter will flash alot higher when spraying out of the hole than if it weren't. I don't know torque converters well enough, but I know that the stall speed and flash rpm are very dependant on the weight of the vehicle and the torque output of the motor. Obviously, the motor will be producing significantly more low rpm torque when "on the juice."
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Old Apr 9, 2008 | 03:11 PM
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Originally Posted by coachk
It is a little vaque, but you can use power adderS. Some of the other classes are more specific but for unlimited street its power adderS
I just looked up the rules and I see that RWD 6 cylinder motors ARE allowed up to 2 power adders....so having a single turbo and nitrous is legal in that class......interesting. I also see that they recently upped the allowable displacement in 6 cylinders to go up to 4.0L. It used to only be 3.5L, but of course, there is a weight penalty of around 3400 pounds! That makes for a porky race car.
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Old Apr 9, 2008 | 03:17 PM
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ROFL, Drag racing with a Z is oddly enough ruled by members of the state of KY.

Great job guys, I loved seeing this car in person it is badass.
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Old Apr 9, 2008 | 03:58 PM
  #96  
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Originally Posted by QuadCam
I think they are really meaning "converter flash." I'm sure that converter will flash alot higher when spraying out of the hole than if it weren't. I don't know torque converters well enough, but I know that the stall speed and flash rpm are very dependant on the weight of the vehicle and the torque output of the motor. Obviously, the motor will be producing significantly more low rpm torque when "on the juice."
I always thought converter flash is when your on the line with your foot on the brake and then you push the gas pedal to the floor right when the last yellow light goes on which causes some kind of rotating inertia with the engine,converter and flexplate. I really need to start doing some research on this for my other project car.
And isn't a flash stall usually alot higher than a foot brake stall. I know the stall should be set at your peak engine torque for drag cars. But I also think that with the Power Glide like the Injected car is using you can have the converter set to be higher than the peak tq.

To the Injected guys, I'm not asking you to give away any of your secrets on your car, but is there any way you can clarify some of these things.I remember the "in car vid" you guys posted a while back and it looked like you were launching around 6k so would that be consistant with your peak tq.

Andrew if you have any other input,please do so because I respect your knowledge of drag cars.
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Old Apr 9, 2008 | 04:11 PM
  #97  
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IIRC "flashing the converter" is when you nail the throttle and the rpms flash up until the convertor locks at its stall speed and engages. Having more torque during launch makes this happen faster of course but can also increase the stall speed. Building the converter tighter helps keep the stall speed on target.
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Old Apr 9, 2008 | 04:34 PM
  #98  
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But what does the nitrous have to do with it? Does the nitrous get it to its peak tq or even higher than its peak tq. That might make sense, but I don't know.
I think we both said the same thing about the flash converter, but yours makes more sense.

Last edited by coachk; Apr 9, 2008 at 04:36 PM.
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Old Apr 9, 2008 | 05:30 PM
  #99  
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Originally Posted by Hal@IP
April 26-27, Atco
May 3-4, Englishtown
Qualifying is on Saturday, Eliminations on Sunday

Taken from: http://www.nopi.com/nopims/dsp_TD.php?vn=SD02

Hal ill prolly be there too. Ill speak to you on AIM about it before you head up
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Old Apr 9, 2008 | 06:21 PM
  #100  
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Originally Posted by coachk
But what does the nitrous have to do with it? Does the nitrous get it to its peak tq or even higher than its peak tq. That might make sense, but I don't know.
I think we both said the same thing about the flash converter, but yours makes more sense.
Im guessing the nitrous is their to help spool up and get out the hole and the convertor was built tight to take the huge tq spike the nitrous provides and stay close to the target stall. But didnt Hal say above that they need the nitrous because the converter was built so tight... Hal can you please elaborate?
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