Purge Line Question
3/16 nylon tubing here. Easy to use & holds its shape if heated with a heat gun when bent and then cooled with water or a wet rag. You can get it at a hydraulics supply place or any good go kart shop for race karts. They use it for hydraulic brake line. 
I bought a used kit and I need my purge line to be at lease 2 feet long and its not, how do you make it longer? do you have to buy new copper line and flare it or does it come with the NPT fitting on it already? How does the same thing work with the plastic lines?
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From: Wichita Falls, TX
Run you a new line, and once at the end if you are using metal, flare or swell larger,,,this will increase the purge plums size... With nylon or plastic line, its harder to do but with the right push lock fittings you can give the end of the line an area to expand before exiting the tubing.. Again a larger plum.
Ricky
Ricky
Originally Posted by NXRICKY
Run you a new line, and once at the end if you are using metal, flare or swell larger,,,this will increase the purge plums size... With nylon or plastic line, its harder to do but with the right push lock fittings you can give the end of the line an area to expand before exiting the tubing.. Again a larger plum.
Ricky
Ricky
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FormerVendor
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From: Wichita Falls,Tx
Originally Posted by WS6HUMMER
Thanks! But how do you secure the line to the NPT fitting that threads into the purge solinoid? Thats the part that I'm just not very clear on.
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Originally Posted by NXJeremy
If you're using a metal line use a compression fitting with male NPT threads on one end. If you are using nylon or plastic line then use a push lock fittting.
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From: Swansea, IL
A more important question is why are you purging? Unless you need to drop bottle pressure there is absolutely no need for an external purge. Just purge in to the intake during your burnout. It is by far a better at eliminating gasses in the lines than purging at a point before your main solenoid.
Originally Posted by Homeslice (tm)
A more important question is why are you purging? Unless you need to drop bottle pressure there is absolutely no need for an external purge. Just purge in to the intake during your burnout. It is by far a better at eliminating gasses in the lines than purging at a point before your main solenoid.
Originally Posted by WS6HUMMER
I'm sure the 14' nitrous supply line would hold way more air than the 18" line from the solinoid to the nozzle, so purging right before the nitrous solinoid has to do some accreditable good.
Galen
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From: Swansea, IL
Originally Posted by WS6HUMMER
I'm sure the 14' nitrous supply line would hold way more air than the 18" line from the solinoid to the nozzle, so purging right before the nitrous solinoid has to do some accreditable good.
My point is that the purge is just a "looks" thing. Why spend the extra money and extra trouble wiring?
Galen:
And the "air" I refer to is gaseous N2O trapped in the lines.. Which is the reason everyone and their dog has a seperate purge.
I can see the big dogs using it to control bottle pressure (read dropping a bunch of nitrous) to a very fine degree to insure a consistant tune or consistant traction but for the average Joe... it's just like neons or a big wing... status symbol.
Originally Posted by Homeslice (tm)
My point is that the purge is just a "looks" thing. Why spend the extra money and extra trouble wiring?
Originally Posted by Homeslice (tm)
Galen:
And the "air" I refer to is gaseous N2O trapped in the lines.. Which is the reason everyone and their dog has a seperate purge.
I can see the big dogs using it to control bottle pressure (read dropping a bunch of nitrous) to a very fine degree to insure a consistant tune or consistant traction .
Originally Posted by WS6HUMMER
I am running a wet system and on wet systems I hear there is a chance of backfire if too much fuel is sprayed and it puddles in the intake. Plus I bought my CFN wet kit used from a friend and the purge solinoid came with it.
Robert
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From: Swansea, IL
Originally Posted by WS6HUMMER
Good point Homeslice. I knew there was another very good point that I hadnt thought about when posting earlier.
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Purging into the engine during a burnout is not recommended even tho some do it,,, Not everone that is doing a burn out is at full throttle... Some call it banging the motor.. Basicly allowing the nitrous system to burp into the engine.. There are a couple of things that alot of people will not talk about.. 1st, bang into an engine can help left ring lands if you are not carefully... Also there is a chance of the system sticking, now that would be bad... With most cars the need to watch your bottle pressure to the chilly on psi is not a concern, sure if you are sparying 500+hp mutli stages and running for thousands of dollars, but for fun not needed... In fact alot of cars can run faster with no purgeing of any kind.. That small delay or NON-sledge hammer hit off the line always the chassic to stick and get, not be shocked...
And finally it realy just looks great, and gets alot of people to notice your car, if you want to be noticed..
Ricky
And finally it realy just looks great, and gets alot of people to notice your car, if you want to be noticed..
Ricky