NOS stainless braided hose

[cmnspwr]

I picked up some nitrous hose to plumb a mechanical fp gauge on my brother's truck. Along with aeroquip fittings, needle valve, and permatex #2, I couldn't get the damn thing sealed. Is there a trick to getting these fittings tight enough (short of cracking the Al) to seal?

Damn, I suck at MS Paint

I plan on remaking the system starting with braided hose with no fittings and going from there with new aeroquip fittings.

 

[joefarmer]

Are the hose ends red or blue? Red is traditional for fuel. I know my Blue nitrous lines will leak down if I try to keep pressure in them. I assumed it was because the higher pressure. Make sure you're using the correct -AN fittings. You will need to teflon all NPT fittings.

bnraond.

 

[SINNER]

at such low pressure (i've seen those hoses hold 2000psi) a 1/4 turn past finger tight should be more than enough. make sure your fittings are 37 degree flare and not 45. if not its a bad hose or you overtightened the fitting to start with. more often than not leaks are from overtorqued fittings