Fuel Pressure Gauge

[Kent McLean]

I've been trying to determine the fuel pressure in my '91 200 20v. 

I bought a test gauge that works with a GM or Ford Schrader valve,
which I found out after-the-fact that our beloved Audis do not have.

I thought I'd pick one up at my FLAPS and tap a hole for it in the fuel
rail.  First stop was a local auto-shop supplier (rather than a national
consumer "we sell air fresheners and neon lights" chain); no luck. I'm
0-for1. I stopped by the local Chevy dealer, figuring I'd pick up the GM
part; no luck, they are closed on Saturday. 0-for-2. Next stop, another
local auto-shop supplier; again no luck. 0-for-3. They suggested the
local speed shop. No luck there, either, but they had a 1" fuel pressure
gauge. I remembered someone on the list installed a gauge permanently on
the rail. I could tap a hole for that. I bought it. I'm 1-for-4. A trip
to the local hardware store secured the 1/8" 27NPT tap, a drill (11/16",
not the Q size needed), and a new outlook. 2-for-5.

Until I opened my Audi's hood.  Where I thought I'd tap into the end 
of the fuel rail, there's a bracket in the way.  Tapping into the top 
of the rail would put the gauge through the hood. Doh! 2-for-6.

More head scratching. Googling lead me to 034 and a T-fitting to 
tap into a fuel line. 
<http://www.034motorsport.com/product_info.php?cPath=24_76&products_id=597>

Since the gauge is NPT, I could probably pick up a T fitting at the 
local home hardware box store.  But first I looked under the hood again 
to see what line to use, only to find SS braided lines. Not so easy
to cut into them. 2-for-7.

I feeling cursed. Thanks, Team Doorhandle.

Question to the Great Collective:  how, where, what do I use
to either a) permanently add my little gauge to the fuel rail,
or b) add a Schrader valve to the rail for my FP tester?

My current thought is to drill the rail to temporarily take a barbed
fitting, cut the hose on the tester to fit the barbed fitting, test 
the fuel pressure, then replace the barbed fitting with a bolt to
seal the hole.  2nd option is to find another GM or Ford dealer to 
secure a fuel injection Schrader valve.

Thanks for your input.

-- 
Kent McLean
'91 200 TQA #1, for sale
'91 200 TQA #2, no name yet
'94 100 S Avant, "Moody"
'89 200 TQ, "Bad Puppy", up in smoke