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Old 10-26-2005, 01:52 AM   #1
drochau
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Default NOS + Procharger Opinions

Allright, I just picked up a nice little NX kit for the vette. Here are the specs:
-Forged Block running 9.2:1 compression
-P-1 Procharger Head Unit w/ FM Intercooler running 11 ish lbs. of boost
Seeing 515 on the dyno (YAY cold weather)

I want to work my way up to an end shot of 200 on the nitrous. This is a street application for the vette, and I don't plan on launching with nitrous. I have a FAST ECU to control the nitrous tune.
What are your opinions for the nitrous setup? I'd like to avoid going to direct port, but so far this seems the safest route. If I go single nozzle wet shot, where should I place it? I'm thinking about 12-16 inches pre-intake manifold. Thoughts?
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Old 10-27-2005, 12:23 AM   #2
bmergner94vette
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single fogger nozzle would be fine.... i would place the nozzle anyplace before the throttle body but after the head unit. if you have the intercooler you need to be after that as well.
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Old 10-27-2005, 02:30 PM   #3
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You are treading on dangerous ground.. 11psi + 9.2:1 and nitrous on top of it, very close to bad news..

I'd use the nitrous on the intercooler or aftercooler if you have one, to lower the imtake charge and get maybe another 40-50hp, but not nitrous directly in the engine..
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Old 10-27-2005, 09:17 PM   #4
drochau
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What makes you think this is dangerous ground? Because of the stress on the crank? Just wondering what you think would be the main issue...
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Old 10-27-2005, 11:52 PM   #5
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Pistons or Rods, Valves, backfire, intake.. Where do I start..
Usually Supercharging/Turbo or Nitrous, not both, unless it is a race engine that gets torn down after every few runs. Too much stress on the parts.. Being forged helps, but still...
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Old 10-28-2005, 12:46 AM   #6
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Quote:
Originally Posted by drochau
Allright, I just picked up a nice little NX kit for the vette. Here are the specs:
-Forged Block running 9.2:1 compression
-P-1 Procharger Head Unit w/ FM Intercooler running 11 ish lbs. of boost
Seeing 515 on the dyno (YAY cold weather)

I want to work my way up to an end shot of 200 on the nitrous. This is a street application for the vette, and I don't plan on launching with nitrous. I have a FAST ECU to control the nitrous tune.
What are your opinions for the nitrous setup? I'd like to avoid going to direct port, but so far this seems the safest route. If I go single nozzle wet shot, where should I place it? I'm thinking about 12-16 inches pre-intake manifold. Thoughts?
I have a 9.1:1 CR 396 running an ATI D-1 Procharger and a 200 shot of NOS (TNT System) run by a FAST management system. Ran on the dyno with just 5lbs-6lbs of boost and no NOS, but ran too to lean to continue (larger fuel pump on the way). Made 535rwhp in this condition. More numbers to come in the next week or so....

-JRW
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Old 10-28-2005, 12:47 AM   #7
drochau
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That's what I'm talking about Xtreme
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Old 10-28-2005, 12:20 PM   #8
lead foot 85 vet
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I did it and got away withit for about a year and 1 1/2 bottles of nos.....simular engine as you guys.....10 lbs boost...100 hp wet shot...I was just hitting the botton in 4th gear and enjoying the rush...then one day with my son in the car I decided to run it through the gears with the nos on.....half way thrugh third gear BOOM ....blew the top of the suuperram through the hood then eat a bolt (they don't stop running)........after it was al over about $7000.00 damage.....most think it detenated......I think it lifted the heads and one cylinder lite the oth er(I havecast iron. you have aluminum_less srenght)........but I'll never know.......pump gas has it's limitations...are manifolds are made for a dry charge.....your going to have lean cylinders with your intake system.....BOOM....10lbs boost and 200 hp wet shot.....BOOM....ruined my whole summer,
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Old 10-28-2005, 01:25 PM   #9
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You are an awsome dude, man that must have been a sight. how old was your son when this happened? My son is slowly getting into going fast. How did your boy react to this?
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Old 10-28-2005, 01:30 PM   #10
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drochau

run 100 ocatane or more to be on the safe side, the first time to stab it.
I can't wait to be where you guys are at. forged motor, then supercharger, then nitrous.
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Old 10-28-2005, 03:04 PM   #11
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I got both but i have not touched my nitrous since the SC. i run a pretty safe system: NX Gemini twin with NX maximizer and DFI to control fuel and timing.

I will not touch my nitrous until everything is perfect. I have waaaayyy too much invested in my setup to just blow it up for a few seconds of thrills.
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Old 10-28-2005, 06:47 PM   #12
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Quote:
Originally Posted by MrNuke
Pistons or Rods, Valves, backfire, intake.. Where do I start..
Usually Supercharging/Turbo or Nitrous, not both, unless it is a race engine that gets torn down after every few runs. Too much stress on the parts.. Being forged helps, but still...
Well...
I have a 377cid w/D1-SC plus a NX twin fogger wet system. Engine all forged, stock block, ARP all around, aluminum heads, lt-4 intake etc etc. Almost three running and NO PROBLEMO. With belt slip +/- 5 psi of boost and 250 shot, 641 rwhp and +/- 789 lbs of torque.

Ran it on 1/4 mile(leaving the line with the nitrous on) with alot of wheel spin: 10.66 @ 135mph.

Just make sure you're not running lean and watch your timing and everything will be ok.
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Old 10-28-2005, 06:47 PM   #13
dr.juice
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Quote:
Originally Posted by MrNuke
Pistons or Rods, Valves, backfire, intake.. Where do I start..
Usually Supercharging/Turbo or Nitrous, not both, unless it is a race engine that gets torn down after every few runs. Too much stress on the parts.. Being forged helps, but still...
Well...
I have a 377cid w/D1-SC plus a NX twin fogger wet system. Engine all forged, stock block, ARP all around, aluminum heads, lt-4 intake etc etc. Almost three years running and NO PROBLEMO. With belt slip +/- 5 psi of boost and 250 shot, 641 rwhp and +/- 789 lbs of torque.

Ran it on 1/4 mile(leaving the line with the nitrous on) with alot of wheel spin: 10.66 @ 135mph.

Just make sure you're not running lean and watch your timing and everything will be ok.
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Old 10-30-2005, 11:55 AM   #14
AKS Racing
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Quote:
Originally Posted by dr.juice
Well...
I have a 377cid w/D1-SC plus a NX twin fogger wet system. Engine all forged, stock block, ARP all around, aluminum heads, lt-4 intake etc etc. Almost three years running and NO PROBLEMO. With belt slip +/- 5 psi of boost and 250 shot, 641 rwhp and +/- 789 lbs of torque.

Ran it on 1/4 mile(leaving the line with the nitrous on) with alot of wheel spin: 10.66 @ 135mph.

Just make sure you're not running lean and watch your timing and everything will be ok.
Dr. Juice,
Didn't you buy Bruce's SC system at the start of 2005? Or were you SCed before that event that allowed you to have 3 yrs with no problems?
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Old 10-31-2005, 01:02 PM   #15
dr.juice
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Quote:
Originally Posted by AKS Racing
Dr. Juice,
Didn't you buy Bruce's SC system at the start of 2005? Or were you SCed before that event that allowed you to have 3 yrs with no problems?
No...i just bought the cog system. The car was already sc.
With the cog i made it to 20 psi of boost @5500rpm(if i'm not mistaken) and around 610rwhp without n2o.
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Old 10-31-2005, 05:32 PM   #16
drochau
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Thanks for the opinions guys
Ran the N20 and fuel lines yesterday. Up for tomorrow is baseline dyno tune, messing with FAST (dry control first until I get low on injector) then prob sat. for the wet if I get confident that the rear end will hold (N20 is for rolling start only)
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Old 10-31-2005, 05:32 PM
 
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