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Discussion Starter #1
Now I have to install a battery cut off switch. Is this true? At all tracks.



While I got you here maybe you can tell me the rules about having a nitrous bottle in a hatch back.


Thanks alot.
Josh
 

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Yes to the cutoff switch. IHRA and NHRA require it. As for the nitrous, you'll need a relief valve vented outside the car. If the bottle overpressures it won't release inside the car.
 

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Make sure the kill switch shuts off the ignition also and just does not kill the battery. Tech got us like that once. They said start your car, and I did and then the dude flipped the switch and the car kept running. He let us run but said next time you won't pass tech.
 

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Discussion Starter #6
Is a releif valve hard to install?
 

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You have to run the alt. output to the battery side of the kill switch, make sure you run heavy wires too, I ran 8 gauge wire from the alt. to the battery and I'm not having any voltage drop.
 

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Discussion Starter #8
Thanks for the input. Now how do install a releif valve? What does it do?
 

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the relief valve is on the side of the nos valve, it contains a rupture disk (small thin copper disk set to blow out at around 1750 lbs). without the relief valve , there is no place to connect a line to vent the nos outside the car if the disk lets go. I think the relief has a -8 flare on it and it connects to a tube that goes outside the car. The bottle has to be empty to put the relief on.Just unscrew the existing relief and put the new one on, REPEAT---- the bottle must be EMPTY
 

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Discussion Starter #10
cool Thanks
 
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