new test

[late8]

Turbo Intake System Leak Tester. [Tips from Josh Wingell/Brent Cook] To assemble a device to locate leaks in your turbo intercooler or intake hoses, try this. Parts Needed:
• A 4 inch long piece of 2.5" O.D. (outside diameter) hose. (I used some radiator hose I got at NAPA)
• 1.5" I.D. (inside diameter) PVC end cap.
• 2 band clamps that will fit around the 2.5" pipe above.
• A schraeder tire valve stem
Note that if you have a larger turbo, the sizes of the end cap and hose may need to be larger in order to fit the turbo inlet. To use it, just remove the intake pipe from your turbocharger inlet, and attach this in its place. If you have a manual boost controller hooked up, you might want to plug off its intake hose, as they leak a lot of air, making it hard to pinpoint the real leak. Pressurize the tester using a bike pump or an air tank. Pressurize the system, and listen all over for leaks. You might want to have a friend check out your boost gauge while you are pressurizing things to make sure you don't put too much pressure on things. (20 psi should be safe, or whatever you run safely for boost) Make sure you or a friend listens under the bumper too, wherever there is intercooler piping. A leak will be obvious, they make a loud hissing sound.
[Randy Starkie] I used my brake reservoir cap/schraeder valve combination that I have made up to also test a turbo intake hose for leaks and cracks. I normally use it to pressure bleed my brakes with a bicycle pump. As luck would have it the size of the cap is almost a perfect fit when clamped into the end of the turbo hose. I turn my compressor regulator down to about 15lbs pressure and use a tire chuck to pressurize the system. Leaks are instantly found with sound of escaping air. The center hole is drilled to 9/16 inch.