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Nitrous Tank Mounting Locations

hustlerhustlerMember
I'm trying to switch to 180's which is limiting my mounting locations for a bottle(s) which is where it looks like folks typically mount them (in place of rear trunk tub) . It wasn't hard to craigslist a kit but I'm finding a 20lb bottle is very tight in the front trunk. The bottles are recommended to be installed with the head facing the front of the car which won't happen in the front trunk. The other aspect is the bottle head should be inclined 15 degrees which is almost there but not quite in the front trunk.

Here are some pics I found in a google search. One has two smaller 5lb bottles mounted in front trunk which look like the atv/snowmobile style bottles.

The others are typical rear mounted. Anyone mounted one diagonally like the 1st and 2nd pictures?













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R 1Rocketship (Guest)
[QUOTE]Originally posted by Bosswrench:
Two suggestions: dropping the battery into the front trunk floor makes a front mount bottle easier. And strapping two big bottles on top of the ZF guarantees they'll be kept nice and toasty, since I detected 180F inside my ZF after an easy 200 mile cruise. Being all aluminum, the ZF case is a great radiator of heat.[/QU TE]

This has always confused me in regards to N02 ( Nitrous) preforming better "warm"...as isn't a COLDER molecule MORE DENSE!!!...thus more explosive.

COLD incoming air into a carburetor produces MORE horsepower vs HOT air entering the carb!

Using that proven theory, why doesn't COLD nitrous have a greater explosive charge than HOT nitrous??!!
hustlerhustlerMember
That was my thought as well Boss. I also have concern that the heat pulled from the radiator into the front compartment may be higher than desired as well depending on ambient air temp. The ideal bottle pressure appears to be around 900psi, and you can achieve that pressure with 86F ambient temp. If its too cool pressure falls, if its too hot pressure spikes high and you start having solenoid problems. If a blowdown tube or pressure relief valve isn't installed or working correctly to release high pressure from the tank, you get a bottle that explodes as I'm sure folks have seen aftermath pictures of. If the car is going to sit baking in the hot sun somewhere, the tanks should be removed I'm told. If the bottle heater is not functioning correctly or wired improperly it can overheat the bottle as well.

Bottle blankets and heaters are used to help get the tank up to the 86F temp for consistent pressure and use. So in liquid form as its stored in the tank, its stored at ambient, but as the liquid exits rapidly it expands into a gas and comes out cold @ -120F. When introduced into the combustion chamber where temp is above 565-575F where the nitrogen separates and absorbs heat, the separated oxygen increases oxygen content in the chamber and allows more fuel to burn. This is my understanding of how things work. Feel free to correct or elaborate on anything.
R 1Rocketship (Guest)
quote:
Originally posted by Hustler:
That was my thought as well Boss. I also have concern that the heat pulled from the radiator into the front compartment may be higher than desired as well depending on ambient air temp. The ideal bottle pressure appears to be around 900psi, and you can achieve that pressure with 86F ambient temp. If its too cool pressure falls, if its too hot pressure spikes high and you start having solenoid problems. If a blowdown tube or pressure relief valve isn't installed or working correctly to release high pressure from the tank, you get a bottle that explodes as I'm sure folks have seen aftermath pictures of. If the car is going to sit baking in the hot sun somewhere, the tanks should be removed I'm told. If the bottle heater is not functioning correctly or wired improperly it can overheat the bottle as well.

Bottle blankets and heaters are used to help get the tank up to the 86F temp for consistent pressure and use. So in liquid form as its stored in the tank, its stored at ambient, but as the liquid exits rapidly it expands into a gas and comes out cold @ -120F. When introduced into the combustion chamber where temp is above 565-575F where the nitrogen separates and absorbs heat, the separated oxygen increases oxygen content in the chamber and allows more fuel to burn. This is my understanding of how things work. Feel free to correct or elaborate on anything.
I had to laugh as living in the San Francisco Bay Area, I RARELY think about "COLD" weather!!.

Now based on the FACT a N02 bottle can EXPLODE!!!...I would NEVER install it in front of myself!!!...rather have the bottle BEHIND the engine...with the engine acting as a shatter shield!!!

On aside note...In the fourth picture the engine is using a Parker Funnel Web Intake & TALL valve covers, possibly indicating a very HIGH LIFT camshaft & rocker arm stud girdles...VERY NICE!!!.
huskerhuskerMember
[QUOTE]Originally posted by Hustler:
I'm trying to switch to 180's which is limiting my mounting locations for a bottle(s) which is where it looks like folks typically mount them (in place of rear trunk tub)./QUOTE]

Maybe I'm missing something. If you're switching to 180's doesn't that pretty much rule out mounting the tanks in the engine compartment which only leaves the front trunk?
joulesjoules"Racing is Life, anything before or after is just waiting" - Steve McQueen
As attestation to how hot it can get in the front trunk, I was carrying one of those cans of flat repair in the front trunk at the first Fun Rally in Phoenix. It was at night (cooled down) after an event driving back to the hotel when there was a load 'bang', after a pucker moment I pulled over and discovered the front trunk was full of a sticky mess of flat fix it foam!

I purchased a '73 Pantera with nitrous hooked up, first thing I did was remove it, I seem to recall it was a 10lb bottle (NOS Brand) and it was mounted in the front trunk. I think different brands have different dimension bottles and even same brand are often in different dimensions for the same weight of nitrous.

In my experience a Craigslist or eBay 'deal' often works out to be a more expensive compromise!

Julian
4nhotrod4nhotrodHe who dies with the most toys is dead
quote:
Originally posted by Robbie:
So here is the conservative, grumpy old man in me .. isn't there enough HP available without putting an NO2-bomb anywhere in the same vehicle as you? Just sayin' someone's been watching too many fast and furious movies. :-))

If you have to ask, then you'll never understand….

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