Nitrous help

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siuauto

siuauto

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Ok, I am new to nitrous. I am planning on running a plate system with a 100 shot. The motor is a 360, stock rods and crank. kB 107 hyper Pistons with the ring gaps set for nitrous. Heads are a ported set of j heads with a air gap and a msd ignition. My question is around the fuel system, would a holley blue work? Also should I have a return system. Lastly, do most people run a -6 or -8 line?
 
I use a Aeromotive street rod pump 150gph dead headed with 1/2 line to feed both carb and fuel solenoid on my daily driver pickup. -6 is fine but id buy a different pump.
 
I used to use a Holley black, 1/2 or -8 line, it will feed the motor and nitrous. The fuel solenoid needs to run at a lower pressure than the carb or it will be so rich it's not worth spraying.
 
I use a holley black pump to feed engine and nitrous and Y off the fuel to another fuel pressure regulator and gauge for the nitrous under the hood. Fuel line is 3/8 steel that is dead headed. I set that up to free flow at I think 5lbs? I cant remember, have to look at my notes. Works good, I started with 100 shot and then a 150, just make sure to pull enough timming and sneak up on the tune. Helps keep your engine in one piece. I need a taller tire to get my rpm down at the track, was trapping at 6800-6900 rpm, about 800 more that NA, little more than I like but sure is fun.
 

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since you guys deadheaded did you run air bleeds? Did you have an initial pressure drop?
 
siuauto said:
since you guys deadheaded did you run air bleeds? Did you have an initial pressure drop?
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Are you talking a purge valve for the nitrous? Not sure on initial pressure drop, I set my fuel pressure free flowing with the fuel jet in it at 5lbs.
 
The first time I used nitrous, it was on a bone stock 74 Dart with a 318/904/2.93 pegleg 7 1/4. Just added a LD4B intake with a Holley 4bbl from a 440 engine. and the 125 nitrous plate. Just "T"ed the fuel from the stock mechanical pump. Car was a daily driver. Drive to the track, open the single exhaust pipe before the muffler, put on a 22.5 inch slick, and run high 13's. Ran it for 4 years, then removed the nitrous, and sold the car. Never had a problem or broke anything. At 100-125 hp on a V-8 you don't need fancy. Just make sure everything is in good condition, and don't run too much advance.
With my 318 I was only adding .39 hp per cube
On my 170 slant I am adding 1.32 hp per cube (225 shot), which needs fancy.
On your 360 you are only adding .28 hp per cube.
 
gtsdude said:
Are you talking a purge valve for the nitrous? Not sure on initial pressure drop, I set my fuel pressure free flowing with the fuel jet in it at 5lbs.
Click to expand...

Yeah, I was doing some reading and some were saying you get a pressure drop on the initial so you can install air bleeds or a fuel purge to prevent a lean condition
 
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