recommended shot
04-05-2017, 08:29 PM
#1
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recommended shot So ive had a nitrous outlet lt1 nozzle kit for a while now. Anyway, looking for opinions on a safe shot on my setup. I do have a racetronix 255 pump with hotwire setup. My motor made 438/419 on a dynojet dyno. Question is, would a 100 shot be safe with the current setup? or should i hold off until i buy a dedicated cell?
04-05-2017, 09:13 PM
#2
That pump will support at least 600HP on motor. That leaves at least 100HP of motor fuel and nitrous uses less fuel. 50lb/hr for 100HP on motor and 32lb/hr for 100HP of nitrous. You should have enough for about 300HP shot. Safer estimate would be 200HP shot. Super safe bet would be 100HP shot will be fine.
04-07-2017, 09:13 AM
#3
So ive had a nitrous outlet lt1 nozzle kit for a while now. Anyway, looking for opinions on a safe shot on my setup. I do have a racetronix 255 pump with hotwire setup. My motor made 438/419 on a dynojet dyno. Question is, would a 100 shot be safe with the current setup? or should i hold off until i buy a dedicated cell?
04-07-2017, 05:06 PM
#4
04-09-2017, 10:42 PM
#5
Roughing out fuel system numbers. 50lb/hr per 100HP for NA motor, so 800HP motor would need 8 injectors a 50lb/hr for a total 400lb/hr of fuel. A 600HP motor will need 300lb/hr total fuel. This is what I use to roughly plan out my fuel needs on a motor I'm building or tuning.
Nitrous is different (at least people who in modern times) it takes about 32lb/hr for each 100HP. So, if you take that 600HP motor and want spray it with 250 shot. You would devide the 600 by 100 to get 6 and multiply it by 50bl/hr x 6 = 300lb/hr total. Then you divide 250 by 100 to get 2.5 and multiply it by 32lb/hr x 2.5 = 80lb/hr total for nitrous. Add the two together an you get 380lb/hr to run that motor. Add you 20% or so for room to grow and to keep the injectors out of 100% duty cycle.
If you can remember that you can do it on the fly or just go here and use their calculator. https://www.rceng.com/technical.aspx
Nitrous is different (at least people who in modern times) it takes about 32lb/hr for each 100HP. So, if you take that 600HP motor and want spray it with 250 shot. You would devide the 600 by 100 to get 6 and multiply it by 50bl/hr x 6 = 300lb/hr total. Then you divide 250 by 100 to get 2.5 and multiply it by 32lb/hr x 2.5 = 80lb/hr total for nitrous. Add the two together an you get 380lb/hr to run that motor. Add you 20% or so for room to grow and to keep the injectors out of 100% duty cycle.
If you can remember that you can do it on the fly or just go here and use their calculator. https://www.rceng.com/technical.aspx