Hotchkis Springs and Sways
AEM CAI
MPx BFMIC
Mopar Rice Plate
Full Stock Exhaust, Gutted Cat
Urethane Filled OEM Motor/Trans Mounts
AGP WGA
Hurst STS
Vac Line & Solenoid Delete
Venturi Line Fix
BWoody Check Valve
Perrin Black Oil Catch Can
LuK Clutch
Mopar Performance Stage 2 w/ Toys, HOM only.
Balance Shaft Chain & Guides Removed
Perrin Fuel Rail w/ Auto Meter 100psi Gauge on rail
I do not know how much power the car is currently making. Going by trap speed, I estimated around 330whp. The next time the car is dynoed, it will be with the spray in the car.
I would like to spray a 75 shot, at a minimum. I do realize that I have reached the limits of the stock fuel system. My next mods to the car will be a Walbro 255 pump, Fuel pump rewire, and a return line.
I do have some knowledge about how engines work, AFRs, EGTs, etc. I have never used nitrous or even looked into purchasing it until recently. It is all new to me. I was reading Hayabusa's FAQ, and it was very understandable.
According to him,
Quote:
If you have stage 2 or 3 with toys do not use nitrous in HOM. The advanced timing will cause much greater pressure inside the cylinder and could cause damage to the internals, detonation, or worse.
I have a problem taking one step backwards to take two steps forward.
Isn't running a much higher octane fuel a solution to being able to spray in HOM? I do not plan on using it on pump gas at all. I currently run VP C12 at the track, but planned on using C16 on spray.
Also, how big of a shot do you think the motor can handle? I know theres guys out there making big turbo power around 525whp on stock bottom ends.
__________________
Black 2004 Dodge Neon SRT-4 Hotchkis Springs & Swaybars
S2 w/ Toys, AEM CAI, MPx FMIC, AGP WGA, Full Stock TBE, Gutted Cat, 22psi, VP C12 Fuel
On Streets, Off Spray: 12.80@114 2.2 60'
On Slicks, Off Spray: 12.24@112 1.74 60'
Last edited by JiM P 2001 : 01-01-2009 at 08:42 PM.
So you are estimating your car makes 330whp with your only real power adder being stage II and gutted cat? That would hafta be some sort of record with the mods you have. I've seen S2 cars with alot more mods not make 330. IMHO you gestimate is a bit high.
Now on to the nitrous.
- The rule of thumb is not to use HOM with nitrous because HOM makes it's power by advancing timing, this can cause detenation and BOOM!!! Now with that said, it has been done before. We have a member who is totally insane (Search HOM + nitrous) and he has been spraying on S3 + HOM. He figured out that a 35 shot worked and allowed him to not get kicked out of HOM. NOTE: He is also rebuilding his motor But in all fairness to the dog, he knew he would need to rebuild it anyway hence one reason why he experimented with HOM and nitrous. So Yes it can be done.
- You mentioned something about going backwards to go forward? HOM does not hold a candle to nitrous!! On a 75 shot, you will get more than 75 HP, HOM is good for what? 30 or 40? So you tell me? which one is better?
I'm estimating my power by trap speed, thats all I have to go by right now. I trapped a 105 at 240whp and did the math on the hp/weight ratio with a 114 trap and I got around 330. Everyone thinks I have nitros already because of my trap speed compared to mods I have.
Do you have any idea of what kind of shot my stock bottom end will hold? If I can spray a 120 without grenading my engine, I'll do it. The car isn't going to spray on the street, I'll use it for 3 passes a night, once a week at my local track.
I'm estimating my power by trap speed, thats all I have to go by right now. I trapped a 105 at 240whp and did the math on the hp/weight ratio with a 114 trap and I got around 330. Everyone thinks I have nitros already because of my trap speed compared to mods I have.
Do you have any idea of what kind of shot my stock bottom end will hold? If I can spray a 120 without grenading my engine, I'll do it. The car isn't going to spray on the street, I'll use it for 3 passes a night, once a week at my local track.
I think it has more to do with a single nozzle system and how nitrous is distrubuted by or intake mani's more than what our bottom ends will take. The rule of thumb is 100 shot and higher should use a DP set up for better distribution. I think N2MB sprayed 100 with a single nozzle and made over 400whp and some ridiculous torque.
Do a seach for NEON marine and direct port. You should get a better idea of what I'm trying to explain.
with 120 octane yes, you proabably can spray 75 shot on HOM and be alright...good luck though. 120 shot on a stock motor...yea i can see it..not 3 times a night every weekend. that'll last about hum..3-4 weeks maybe. keep it at 75 shot..or if you will 100..if this is your daily...only do 50-60. and mostly just purge to look cool. always better safe than sorry. and no with your mods you ARE NOT making 330 all motor i made that with 60 shot of nitrous and with the mods you have.
with 120 octane yes, you proabably can spray 75 shot on HOM and be alright...good luck though. 120 shot on a stock motor...yea i can see it..not 3 times a night every weekend. that'll last about hum..3-4 weeks maybe. keep it at 75 shot..or if you will 100..if this is your daily...only do 50-60. and mostly just purge to look cool. always better safe than sorry. and no with your mods you ARE NOT making 330 all motor i made that with 60 shot of nitrous and with the mods you have.
sick.
anyways man just keep it off HOM, run race gas when you spray if your going to run the 75 to keep things safe, and you will be fine.
My fuel set up is basically a 255, rewire and return line. you will be golden.
i didnt see anything on what you were going to control it with? i have the dynotune digital wot/window switch and love it. you can lock out 1st gear and adjust on the fly your window or dual stage settings etc if you mount it in cabin.
and no with your mods you ARE NOT making 330 all motor i made that with 60 shot of nitrous and with the mods you have.
What was your trap speed when making the said 330whp?
Quote: Originally Posted by NJ DSM
sick.
anyways man just keep it off HOM, run race gas when you spray if your going to run the 75 to keep things safe, and you will be fine.
My fuel set up is basically a 255, rewire and return line. you will be golden.
i didnt see anything on what you were going to control it with? i have the dynotune digital wot/window switch and love it. you can lock out 1st gear and adjust on the fly your window or dual stage settings etc if you mount it in cabin.
WOT and window switch from 3k to 6k, also running a 2-step and slicks. wiring to the clutch up-stop switch as well. it will engage 2-step and disengage n20 when clutch is depressed and gas pedal is at WOT (so I'm not spraying on the 2-step) once I dump the clutch, it shuts down the 2-step and starts spraying.
i have the dynotune digital wot/window switch and love it. you can lock out 1st gear and adjust on the fly your window or dual stage settings etc if you mount it in cabin.
What was your trap speed when making the said 330whp?
WOT and window switch from 3k to 6k, also running a 2-step and slicks. wiring to the clutch up-stop switch as well. it will engage 2-step and disengage n20 when clutch is depressed and gas pedal is at WOT (so I'm not spraying on the 2-step) once I dump the clutch, it shuts down the 2-step and starts spraying.
yea im running basically the same thing. Kosei's and 24.5/8's MH's with N2MB wot/2-step set-up. sounds good...if i can get some 11's this spring i will be happy
and if i recall mopar97 made 330ish/~400 wheel, but didnt get to the track, so no trap times.
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I'm spraying next year and have some Q's...
That would hafta be some sort of record with the mods you have. I've seen S2 cars with alot more mods not make 330. IMHO you gestimate is a bit high.
sick.
stay tuned for details 
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