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track results with nx dp kit!!

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Old 06-25-2005, 02:15 PM   #1
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Default track results with nx dp kit!!

First problem of the night came when I found out that my bottle heater wasn't working, but I tried to manage with out. I had two ten pound bottles that were full. First run, bottle pressure was at 1100 but dropped to 850-875 at the end, and I ran a 11.26 @123 w/ 1.75 60'. Second run I changed the bottle, lowered tire pressure to 10psi from 12psi, and opened the bottle to a 950 psi. Second run I ran 11.02 @123 with a 1.66 60', and bottle pressure dropped to just above 900. I am spraying a 200 shot, and the car was tuned at 1050psi. Last time I went to the track my bottles were warmer but, never more than a 1000psi and I trapped @126. Any ideas on how much hp I am losing going from 1050psi to 900psi? If I get my 60' down to a a 1.50, is there a possibility of going 10.50's @ 127-128-129?
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Old 06-26-2005, 01:02 PM   #2
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ttt......
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Old 06-26-2005, 01:13 PM   #3
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Quote:
Originally Posted by Juicedz
First problem of the night came when I found out that my bottle heater wasn't working, but I tried to manage with out. I had two ten pound bottles that were full. First run, bottle pressure was at 1100 but dropped to 850-875 at the end, and I ran a 11.26 @123 w/ 1.75 60'. Second run I changed the bottle, lowered tire pressure to 10psi from 12psi, and opened the bottle to a 950 psi. Second run I ran 11.02 @123 with a 1.66 60', and bottle pressure dropped to just above 900. I am spraying a 200 shot, and the car was tuned at 1050psi. Last time I went to the track my bottles were warmer but, never more than a 1000psi and I trapped @126. Any ideas on how much hp I am losing going from 1050psi to 900psi? If I get my 60' down to a a 1.50, is there a possibility of going 10.50's @ 127-128-129?
The answer is no.
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Old 06-26-2005, 07:00 PM   #4
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you sound pretty confident with that answer, how fast is your car again?
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Old 06-26-2005, 08:55 PM   #5
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Did you trap 126 with the 6 speed or the th400? How was the weather compared to the 126 run? I would say you are down 1.5-2 from the bottle pressure but not the 4-6 mph you are looking for unless you you get a way better DA.
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Old 06-26-2005, 09:04 PM   #6
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Don't get defensive man, you asked a question and he gave you his opinion. BTW, his car is faster than yours, he runs low 10s.

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you sound pretty confident with that answer, how fast is your car again?
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Old 06-26-2005, 11:32 PM   #7
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I wasn't getting defenseive, he just sounded confident because no explanation was given, just a simple no answer
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Old 06-26-2005, 11:34 PM   #8
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Originally Posted by b18c1hybrid
Did you trap 126 with the 6 speed or the th400? How was the weather compared to the 126 run? I would say you are down 1.5-2 from the bottle pressure but not the 4-6 mph you are looking for unless you you get a way better DA.
I trapped that with the th400, but again my bottle pressure was still around 900psi. The only thing I changed was, I went to the full 28x10 drag, from the hoosier qtp-27x10.5. The weather was actually alittle cooler, but I had probably a 12-15mph wind coming right at me. I gained 2.5mph in the 1/8th but lost 3mph in the 1/4
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Old 06-26-2005, 11:52 PM   #9
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If you can get your 60ft down to a low 1.5 you will probably run a 10.9 possibly a high 10.8. You'll get better times when the weather cools off, if the car stays consistant maybe a 10.7, not to bad.
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Old 06-27-2005, 08:50 AM   #10
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Quote:
Originally Posted by Juicedz
I wasn't getting defenseive, he just sounded confident because no explanation was given, just a simple no answer
I have a weak dick dry kit on my car that is pretty old...When i had a stock internal setup the car ran 10.7's @ 3400 lbs with me in it. Now the car has a cam and a little better exhaust and runs a tiny bit better. 150 more psi in the bottle will not pick up .5 seconds of elapsed time. I figured I didnt need to explain that to you. You asked a simple question and I gave you a simple answer. That is all.

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Old 06-27-2005, 09:26 AM   #11
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the thing is i tuned on the dyno at 1050psi, I do remember when my pressure was 900 or so I was only picking up around 100 horse because my a/f waslow 10's some times even high nines
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Old 06-27-2005, 09:51 AM   #12
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Quote:
Originally Posted by Juicedz
I trapped that with the th400, but again my bottle pressure was still around 900psi. The only thing I changed was, I went to the full 28x10 drag, from the hoosier qtp-27x10.5. The weather was actually alittle cooler, but I had probably a 12-15mph wind coming right at me. I gained 2.5mph in the 1/8th but lost 3mph in the 1/4
The mph is lost cause of your tire height, and difference in tires mfg and style, 28x10 Drag what??? Slick or radial. You lost an inch in diameter quite a bit of change there. Also the weahter can have huge part in mph. The 60's ft, seem a little off. Are you hitting at the launch or waiting to turn the nitrous on. To get the car into the 10's that 60 foot has to come down.
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Old 06-27-2005, 10:28 AM   #13
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Quote:
Originally Posted by Juicedz
the thing is i tuned on the dyno at 1050psi, I do remember when my pressure was 900 or so I was only picking up around 100 horse because my a/f waslow 10's some times even high nines
What cam, heads, etc. What plugs do you run, etc. You should be bottom 10's with 200 pills in a 34-3500 lb car with a good combo..Sounds to me that something is out of whack. WIth 200 pills the car should be making over 600rhwp...Is it even doing that? I see its a LT1 car....What ar ethe specs of a zz409?
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Old 06-27-2005, 02:30 PM   #14
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Quote:
Originally Posted by V6 Bird
What cam, heads, etc. What plugs do you run, etc. You should be bottom 10's with 200 pills in a 34-3500 lb car with a good combo..Sounds to me that something is out of whack. WIth 200 pills the car should be making over 600rhwp...Is it even doing that? I see its a LT1 car....What ar ethe specs of a zz409?
the specs are 226 duration both intake and exhaust, and a .555 lift., afr 190cc headfs with a 56cc chamber, tci 10"ultimate street fighter,-3800 stall I did put down 510 on the 150 shot through a moser 12 bolt and 4:10 gears
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Old 06-27-2005, 02:33 PM   #15
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Quote:
Originally Posted by NXRICKY
The mph is lost cause of your tire height, and difference in tires mfg and style, 28x10 Drag what??? Slick or radial. You lost an inch in diameter quite a bit of change there. Also the weahter can have huge part in mph. The 60's ft, seem a little off. Are you hitting at the launch or waiting to turn the nitrous on. To get the car into the 10's that 60 foot has to come down.
Ricky
sorry there was a typo. I had hoosier qtp 27x10.5 when I trapped 126, I then switched to the hoosier full drag 28x10, that nitrous is coming on as soon as the t-brake is released, keep in mind that my 1.66 time was still with 11psi in the tires
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Old 06-28-2005, 09:02 AM   #16
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Quote:
Originally Posted by Juicedz
the specs are 226 duration both intake and exhaust, and a .555 lift., afr 190cc headfs with a 56cc chamber, tci 10"ultimate street fighter,-3800 stall I did put down 510 on the 150 shot through a moser 12 bolt and 4:10 gears
LSA on the cam??? Whats the intake centerline? Im not a huge fan of the specs soo far...That may be why you are not getting as much as you could out of the combo...
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Old 06-28-2005, 05:25 PM   #17
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you were spinning with the 27" tall tire causing you to trap a higher mph.
with everything in check and a better 60ft i see 10.50's easy.
get it all worked out falconey
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Old 06-28-2005, 09:33 PM   #18
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You would also want to take a look at the convertor a 10in is pretty big.That will hurt your 60ft.And the cam is not the best choise for nitrous you want a split duration.
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Old 06-28-2005, 10:35 PM   #19
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Quote:
Originally Posted by NXRICKY
The mph is lost cause of your tire height, and difference in tires mfg and style, 28x10 Drag what??? Slick or radial. You lost an inch in diameter quite a bit of change there. Also the weahter can have huge part in mph. The 60's ft, seem a little off. Are you hitting at the launch or waiting to turn the nitrous on. To get the car into the 10's that 60 foot has to come down.
Ricky
Ricky, or anyone else, do you know the formula for tire diameter change and affect on gear ratio. I have the same problem and forgot about the diameter thing. My new DR's are about 1/2 to 3/4 inch shorter (in hieght, don't know dia yet) than old tires and my trap speed average went down. So did my gear ratio right?
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