North American Turbocoupe Organization

The Saskatchewan Gillis Valve
Turbosnowbird Offline
So i decided i wanted to get more boost outta my beast. I then proceeded to affix a pipe clamp onto the vaccuum line that feeds into the WGA. Its on there pretty good but i'm not really noticing much of a difference. Is it not working or am i completly missing something?

Walsted Offline
Posting Freak
You will probably want to remove that clamp, lest your engine suffer an untimely end. If the WGA hose is closed, it will never see boost, and the WG won't open, and the engine will see the max possible boost and heat from your turbo, and detonation will occur in great amounts.

If it is just restricting the line, the same amoount of pressure will still get there, just not quite as soon, so the WG would still open at the same boost levels.

Mike Walsted - NATO member
1986 5-speed TurboCoupe and 1985 5-speed XR7
Mike Walsted - Sold my 1986 5-speed TurboCoupe

Jeff K Offline
As Mike said, a restriction in the line to the WGA will limit how fast pressure builds to the WGA. This will cause boost spiking, which is NOT a good thing. NEVER restrict the line to the WGA! Why not just fork up the $50 CDN or so for a Gillis type pressure relief valve. You will find it is the best money you ever spend on the car.

Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 21 psi, forced air intercooler, water injection, bypass valve, Ranger roller cam, subframes, etc., etc.. // 86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP nitrous, ignition, gears, suspension, etc., etc.... // 91 Escort: Bone stock winter car // 02 Taurus Vulcan(wifes car)
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
11 Crown Vic Interceptor
14 Toyota Camry (wifes car)
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized

Keith Nubel Offline
Posting Freak
If your looking for a real cheap way to increase boost then use a wire butt splice connector between the hoses from the BCS. The different wire gauge butt splice connectors act like an orifice. Other then that I would use an adjustable valve or stay stock.

85.5 TC 5 speed, Ranger Roller cam, 3" exhaust system, manual boost valve, large VAM, SVO PE computer, front mount Motorsport intercooler & sport grille, ported upper and lower intakes,flow matched injectors, ported E6 manifold, 245/45/17 wheels & Tires,140 mph speedo,Motorsport lowering springs, under restoration
1985 TC

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