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Questions regarding NOS

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Questions regarding NOS
Old January 3rd, 2008, 06:51 PM   #1
viper75
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Questions regarding NOS

I'm thinking about spraying my 2000 GTS, but I was wondering would I have to change out the heads on the car or would the stock heads be just fine? Also how hard could I spray it, I was looking anywhere from 100-150 shot, what is better the dry kit or wet kit, any suggestions?
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Old January 3rd, 2008, 07:07 PM   #2
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WET for sure.
be carefull on the cast pistons.
id say 100 is absolutely safe and 150 is max
heads are fine
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Old January 3rd, 2008, 07:35 PM   #3
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Quote:
Originally Posted by viper75 View Post
I'm thinking about spraying my 2000 GTS, but I was wondering would I have to change out the heads on the car or would the stock heads be just fine? Also how hard could I spray it, I was looking anywhere from 100-150 shot, what is better the dry kit or wet kit, any suggestions?
Install a WB before the nitrous, this way you will not be guessing. Look at the Innovate sitefor WB info.
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Old January 3rd, 2008, 07:41 PM   #4
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Both posts above are well said.
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Old January 3rd, 2008, 08:24 PM   #5
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and make sure to go straight to the dyno BEFORE you spray.....

tune it on the dyno with FULL tanks.
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Old January 3rd, 2008, 10:15 PM   #6
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Damn good thread and I can see a certain Alley member going to post next saying he has an extra NOS set to sell
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Old January 3rd, 2008, 11:19 PM   #7
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I wouldn't worry about the heads, because Nitrous is a concentrated oxygen delivery system that doesn't really need high volumetric efficiency to deliver its power. Better heads would improve power, but mostly in an N/A fashion. Of course if the new heads have better squish characteristics or better swirl, it would optimize the combustion process for the nitrous and allow more spark advance ect...
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Old January 4th, 2008, 07:59 AM   #8
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My setup from TOOOFST had 46/30 jets in it from the start, bolted it on and made 565rwhp at 10.5 A/F on the first pull.

BTW: This kit is for sale in the classifieds
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Old January 4th, 2008, 07:38 PM   #9
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Would NOS hurt the motor in the long run or would it all depend on how many times you spray it? I don't wanna have a shot motor later on.
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Old January 4th, 2008, 07:49 PM   #10
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anything can happen with a poorly tuned car. nitrous is just one way of doing it.

if you dont spray, you'll never hurt it..........
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Old January 6th, 2008, 11:35 PM   #11
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Originally Posted by The Former PFR View Post
I wouldn't worry about the heads, because Nitrous is a concentrated oxygen delivery system that doesn't really need high volumetric efficiency to deliver its power. Better heads would improve power, but mostly in an N/A fashion. Of course if the new heads have better squish characteristics or better swirl, it would optimize the combustion process for the nitrous and allow more spark advance ect...
A nitrous port job involves work on the exhaust side. Take a look at a dyno log of a nitrous car without aftermarket headers or head work and you will see the torque drop off quickly.
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Old January 7th, 2008, 12:10 AM   #12
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nitrous bitch
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Old January 7th, 2008, 05:40 AM   #13
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Quote:
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A nitrous port job involves work on the exhaust side. Take a look at a dyno log of a nitrous car without aftermarket headers or head work and you will see the torque drop off quickly.
yup, mine dropped off fast and i didnt have headers.
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Old January 7th, 2008, 08:50 AM   #14
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Quote:
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yup, mine dropped off fast and i didnt have headers.
At least I could say at the time I put down 800rwtq...even if it was for only 800rpm
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Old January 7th, 2008, 09:03 AM   #15
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Quote:
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A nitrous port job involves work on the exhaust side. Take a look at a dyno log of a nitrous car without aftermarket headers or head work and you will see the torque drop off quickly.
That also has to do with the fact that you are spreading the same addition of oxygen/fuel over more combustion events. That is gonna make your torque fall off hard. But yeah, porting the hot side to evacuate the additional gases is a good thing, I suppose.
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Old January 7th, 2008, 03:44 PM   #16
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i put down 856rwtq
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Old January 7th, 2008, 03:49 PM   #17
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Quote:
Originally Posted by viper75 View Post
I'm thinking about spraying my 2000 GTS, but I was wondering would I have to change out the heads on the car or would the stock heads be just fine? Also how hard could I spray it, I was looking anywhere from 100-150 shot, what is better the dry kit or wet kit, any suggestions?
With your 2000 Viper, you have a "cast" piston engine. The pistons are theoretically stronger but not very tolerant to heat (detonation) and will not hold up as good as the earlier "forged" pistons when considering forced air induction or nitrous. Therefore you should limit your RWHP to 200. I always use Air/Fuel as the basis for HP gains..ie; jet for 10.5 A/F, the resulting HP will be what you can safely expect.

As for heads, on your model year, your camshaft profile is the weak link. A cam change and 1.7 Rockers will go far and be amplified by the addition of nitrous.

Good Luck.
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Old January 7th, 2008, 03:53 PM   #18
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Quote:
Originally Posted by ViperJEDI View Post
With your 2000 Viper, you have a "cast" piston engine. The pistons are theoretically stronger but not very tolerant to heat (detonation) and will not hold up as good as the earlier "forged" pistons when considering forced air induction or nitrous. Therefore you should limit your RWHP to 200. I always use Air/Fuel as the basis for HP gains..ie; jet for 10.5 A/F, the resulting HP will be what you can safely expect.

As for heads, on your model year, your camshaft profile is the weak link. A cam change and 1.7 Rockers will go far and be amplified by the addition of nitrous.

Good Luck.
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Old January 7th, 2008, 04:12 PM   #19
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