Can I just drill a 1/2 inch hole out the bottom of my trunk and stick the tube down there? I'm planning to do 99% of spraying at the track and I figure when I'm not using the bottle I can pop the tube off and stick a rubber stopper in the drilled hole.

The reason I ask is I was reading a lot of posts about what you can and can't do and NHRA specifications which I'm not really following. The Blow down tube just inst very long which doesnt give me many install options.

Thanks

 

You don't even need the blowdown tube to meet track specs, only if you have a hatch back and the bottle is in the cabin. I did exactly what you suggested and use a plug.

 

Intead of a tube you can go with stainless steel braided hose. You do need the correct hose end mate with the blow off valve of the bottle. I forgot what size hose end. I want to say 8AN.

 

What happens if I were to go to the track and I had a full bottle and the safety valve and not the blow down tube attached. Now if at the track I pulled a quick switch, would n20 come shooting out of the valve?

In other words can I make easy switches without losing nitrous out of the bottle?

 

Yes, you can remove the blow down tube at any time without loosing gas. Let me clarify that, you can with NX, I believe all the others are the same. Although with the proliferation of nitrous kits these days you never know.

The Safety Valve is only set to blow if your bottle exceeds its set pressure, I think its in the vicinity of 1900 psi, that is so the bottle bleeds off pressure vs blowing up.

The valve where the nitrous is fed to the engine is through a hand controlled valve (unless you have a remote bottle opener)and is totally separate you can change bottles to your hearts content.

The stock bottle has a safety valve you just don't have any method of attaching the blow down tube. A new valve is supplied with the kit that the blow down tube screws onto.

 

this may or may not help, but i think there are some holes under the spare tire that already have stoppers on em. you might be able to put an extension from your bottle to these holes. i hope this was helpful.

 

what does a blow down tube do? would i need one?