kgorman

I went to the local Parker Hydraulic shop and they did the hoses and quick disconnect fittings, all very nice and safe for these pressures. Parker has outlets most major cities in the US. Unsure about Canada.

FLA997

The OP (dogger15) and I discussed how ridiculously difficult it is for most to put together an N2 Air Jack system with no hassle, especially if you know nothing about the fittings mentioned in the original post (NPT/G/etc) and how they apply to your Cup air lance. In my case, I don't want to drive to 5 different places for this and that. In fact, when I first looked into this I recall walking into the Fort Lauderdale AirGas thinking they would have everything I needed in one place - wrong. Aside from the N2 cylinder, they had zero parts for a high pressure N2 system.

So....dogger15 and I put together a reference guide below, complete with links to buy each item from the comfort of your couch, for a portable N2 system. I wish I was lucky enough to have such a reference when I was looking...hopefully this helps someone down the road. The system below is not the "best" or top-tier level, but it gives you a reference point - adjust up or down depending on your budget. There are many, many ways to assemble an N2 Air jack system, and the example below is also not the "cheapest."

I know of another RL member who got a system for less than half the cost of the one below by sourcing high pressure components from a Car Wash Supply store in Pompano Beach (https://www.sonnysdirect.com). He walked in with his air wand and came out with a functional kit (minus the N2 cylinder).



PDF of this graphic also available for download.
NITROGEN SETUP v.2.pdf

997 Specific

Links to each item above to purchase, in order they appear, minus the air lance:

1) Staubli Male G 3/8" to NPT 3/8" Adapter

2) EATON HANSEN QD PLUG - MALE P/N B42

3) EATON HANSEN QD Coupler - FEMALE P/N 420

4) Parker 3/8" Male x 3/8" Female Connector

5)

6) EATON HANSEN QD PLUG - FEMALE P/N B43

7) EATON HANSEN QD Coupler - FEMALE P/N 420 (SAME AS #3 ABOVE)

8) Harris Motorsports High Flow Regulator

9) 60 CU FT Aluminum Cylinder w/ CGA-580 valve

10)

In all about $850.00 plus a trans fill on your cylinder, assuming you buy one of your own. Around $700-ish if you get on an exchange with your local gas supply company.

Rob

bauerjab

Great post. Has been on my list of things to do. Thanks.

zip465

Great info!

24Chromium

Bravo! Can't thank you enough, as I'm about to travel down this road yet again with another car.

skxf430

great info, and thanks for all the links. I am in need of a setup soon.

zip465

This is a great post and by far the best information to date on setting up a nitrogen system. I have to question the selection of the CEJN couplers that are only rated to 230psi max working pressure. Considering that most airjack systems need ~450psi to get the car off the ground the working pressure rating is low for the application. Yes I'm sure that CEJN has some FS of 3 or 4 on the 230psi working pressure but why risk it.

FLA997

Chris - you are correct the QD ratings are below air jack working pressures. I questioned this also until I researched it and apparently many teams in Europe use the CEJN QDs with their setups, to include pit equipment operating up to 900+ PSI...

BUT...I agree its an unnecessary risk and have since found some high pressure 1000 psi FPT QD couplings, and MPT/FPT matching plugs:

1000 PSI FPT QD - Grainger

EATON HANSEN QD PLUG - MALE P/N B42

EATON HANSEN QD PLUG - FEMALE P/N B43

I have a set on the way to replace the CEJNs. The graphic a few posts up and the PDF have been updated.

zip465

Cool, and thanks again for the info and updates! Oh, BTW the min burst pressure on the CEJN is 2030 psi...

stujelly

the parker fittings twist lock and then you can untwist and bleed pressure before you pull the release to disconnect. This is probably not the exact one we use but it is way safer than anything out there. It is nice to bleed off 400 psi before popping the coupler.

https://www.mscdirect.com/product/details/84932128

skxf430

Stujelly,

The link you listed was dead.

Thanks for any info.

dogger15

Exactly, and I believe the two pressure ratings is an example of comparing apples to oranges.

Some of the manufacturers list the max working pressure of their QDs and some list the min bursting pressure. In this case I was unable to find the max working pressure for the Hansen QD but I'm guessing the max pressure listing from Hansen (1000 psi), is the same as the min burst pressure from CEJN (2030 psi). Think about it, anyone ever have a cheap Harbor Freight QD sprout an air leak on something like a 3000 psi pressure washer? QDs are pretty bullet proof once connected and locked. It's the connecting and disconnecting that gets tricky.

One concern I do have for the Hansen QD is flow rate. Hansen list max flow at 45 CFM where the CEJN max flow is 140 CFM. Keep in mind the whole point behind using the Harris motorsports regulator is achieving a high flow rate (crucial in air jack operation). That high flow rate won't do any good if it is choked down at the QD. FLA997, you're in the perfect position to do an A/B comparison on the two types of QDs since you ordered the CEJN and the Eaton Hansens. I would love to hear what kind of performance difference (if any), you experience between the two.

Very nice feature and the same as the "E-Safe" fitting I use. Here's a link to a cheezy video put out by the manufacturer showing the venting process before disconnect:


Many other brands have similar features, a lot depends on how much you want to spend.

Like FLA997 said, there are many different configurations and cost for these systems. The point of this thread is to break it down and provide anyone interested with the parts and sources so that you can cobble together the system that works best for you and your budget.

stujelly

try this, it works on my computer

https://www.mscdirect.com/product/details/84932128

BTW, the esafe one looks similar and would be pretty cool too

skxf430

^^^ It works. Thanks

zip465

It's interesting that most of the manufactures of high flow venting QD's such as CEJN, Parker, and Oetiker all list their working pressures at ~230psi. I'm wondering is there's some ISO, DIN, or OSHA limitation placed on them from a venting perspective e.g. venting gas force and resultant sound pressure levels drive the max limit. Also if you look at the offerings from Paoli all the QD's they show and offer are the CEJN variety along with Oetiker, considering their depth into motorsports I'd venture to say the CEJN units are fine for use - your mileage may vary and it's up to you the end user to check and or replace for your safety.