Pressure rating of the 1/8" poly tube

[Summit670NX]

I am in need of some info......... Can the poly tube used in some kits, N.O.S. I know of for sure (from the solenoids to the nozzle) be used for a nitrous gauge? This is on my sled, and I want/need a smaller line for my gauge, can the poly tube with the correct end fittings be used for this?? Seems like a lot of pressure for the poly............

[flames4me]

don't they make braded steel pretty thin like 2an or 3an?

[Summit670NX]

3-AN yes, 2-AN I've never seen??

[flames4me]

I dono if they make 2an personally, I've never needed anything that small, just a question to other members who might know. but about your poly, one quick way to find out is to try it, do you have access to a small length of some that you are thinking about? speed shops would probably have some left over. just hook it up to a bottle, cap it off and open to bottle... if it blows then its too much pressure.

or have you thought about hard lines at all? your guage almost never moves and on a sled I am sure you woun't need very much of it to bend up. just a thought.

[srsnow]

It should take the pressure. Heat can weaken them and is usualy what casues the failures.

[JAMZ87SS]

Just a thought, but would a line that small freeze up? And also isn't nitrous extremely cold? would the cold make the poly line brittle? or is it only cold when introduced to the atmosphere? HMMM but some air must get in the line and make it cold at some point... just thinking out loud here, any thoughts?

[satur9]

my purge kit came with poly lines. it holds fine. theres a guy overseas i think. that sells whole nitrous kits with nothing but poly line. uses it on direct port with these funny looking nozzles that hold the. jets. anyway as long as its not touching anything hot it should hold. but it has to be the right poly line like the stuff dynotune sells.

[JAMZ87SS]

GOOD INFO , thanks satur9

[Summit670NX]

Very good info................ I did get a e-mail back from NX, and the D-2 Black Race Hose can be used for bottle pressue. Now D-2 should be 1/8" if i'm not mistaken? NX did point out that using their D-2 Race Hose will not be 100% accurate due to expansion of the hose, example 1,100 psi at the bottle will read 1,000 psi at the gauge. Dynotune is that a shop or a person? How do I contact them/him? Hard lines to a gauge wouldn't work well for a sled, at least not my sled. Seems my sled is upside down alot, hood and surrounding structure is very flexible and gives a lot. I'm thinking poly or small flexible line instead of the #4 AN SS teflon line I have now to cut down on the volume of nitrous that I lose. Seems trivial, but a 2.5-3.0 #bottle sure doesn't last long. Maybe I need a bigger bottle?? Those carbon fibers are pricey$$. Ouch!!!!!!!!!!!!!!!

Thanks to all for the info!

[QIKGTS]

This is going a little off topic but have you seen the nitrous stuff made by Holtzman Engineering for sleds? It's pretty trick. His design regulates pressure in the nozzle to maintain a consistant hit without the need for high bottle pressure. As a matter of fact, with his deal you wouldn't even need a pressure gauge because bottle pressure doesn't matter... The nozzle takes care of all that...

Here's a link to an article I saw...

http://www.snowtechmagazine.com/articles/2003/nitrous/nitrous.php

And here's one for his site...

http://www.holtzmaneng.com/

[Summit670NX]

Yeah, looked into it a little, was limited at the time and hard to get. Don't believe it's a true wet system though - the nozzle looks like it fogs the airbox/filters, kinda like the Boondocker system. I am not too sure of how the fuel gets added and I wanted a system that was easily HP adjustable. I wanted a true wet, hard hitting system and one I knew would be trouble free. Seems many of the specific systems have their problems, don't know about the Holtz kit - not dogging on them at all. Also, I wanted something different for my sled. Not many sledders have heard about NX brand. I know the NX kit on my sled has gained a lot of respect from other sledders. Keep in mind this isn't an off the shelf kit from NX, it's a custom kit built by NX to High Mark Recreation's spec's. Trust me it works well!! What gets me is why in the world is the sport kits so much more $$ than the auto kits?? Hmmmm.......

[QIKGTS]

Being from Florida I don't know a whole lot about systems available for sleds, I just came across that Holtzman deal and it seemed interesting. I did see that people often mentioned the Boondocker deal when the Holtz stuff was being discussed.

NX makes good power, no doubt... Please excuse my noobiness, if you don't mind me asking (and sending this thread even further away from your original topic j/k), what do you mean by "sport kit's" and "auto kit's"?

[Summit670NX]

Sport kit is for the power sports, sleds, bikes, atv's, etc........Auto kit is of course for cars and such. If you compare a very basic kit from each line you will see what I mean about price. Seems you have to pay more to play with the toys.............

[flames4me]

I suppose the sport kits are more vehicle-specific then just a standard automotive wet or dry kit. if anything an automotive wet kit w/o the bottle would work just as good on any vehicle as long as you can get the jetting correct... might save some money down the road doing this rather then trying to find a proven reliable sport kit for your application.

[Summit670NX]

Yeah, I agree. Probably be cheaper to piece one together if a guy knew what he was doing............I didn't know anything at the time, I know a little more now LOL.

[flames4me]

nice part about nitrous, for the most part its pretty easy to figure out how to rig up a custom system to fit your application once you learn about the differant ways to setup nitrous to work correctly.

[QIKGTS]

Sport kit is for the power sports, sleds, bikes, atv's, etc........Auto kit is of course for cars and such. If you compare a very basic kit from each line you will see what I mean about price. Seems you have to pay more to play with the toys.............

Simple explaination... Thanks...

[satur9]

www.dynotunenitrous.com