Boost Leak Testing 201: Using the tool.
This is the second part of the Boost
leak testing series. In this video, several examples of possible leaks you
might find are exhibited, as well as suggested fixes. Hopefully this video
helps turbo cars around the world to be
healthier and more powerful.
Boost Leak Testing 101: Building the tool.
If your intake isn't sealed up and completely air-tight, then your turbo is working harder to produce fewer
results. This is a tool used to verify the integrity of the intake, and to
find trouble spots that need attention.
When your turbo is busting its fins to
compress air, why not make all that air go where it belongs... with more
fuel... to make more boom.
This version of the tester with clamp-style tire valve stems in the cap is
ideal because after you have the intake charge (from an unregulated
source), the schrader valve allows you to disconnect the air hose you're
charging it (silencing the hiss of it) so you can hear where small pesky
leaks might be hiding. Testers without the clamp valve are a waste of
The parts list is available here:
Boost leaks can cause idle problems,
misfires, backfiires, squeaks, quacks, honks, or even seem like nothing at
all is wrong except your time slip is a second off at the track.
Everywhere one part of anything bolts to another on the intake, it's an
opportunity for Boost leaks. I've
blown Intercoolers apart.
Not the couplers, the end tanks. Ever wondered what PSI the wastegate
actuator's really opening at from standing over it in the engine bay?
Build this tool.
Until you've verified this on your equipment, you have no idea.... Every
car I've ever tested has Boost-leaked out the Yen-Yang.
500whp WRX Wagon w/ dogbox.
This car at the time was one of the highest whp EJ205's in the country. It
made just under 500whp all Boost on
a stock location turbo. These pulls are
literally the first time driving the car hard after the build. Took awhile
to get used to the dogbox and launching the car.
sr powered s12 15psi with a bad boost leak.
a little video of my s12 running up to 110mph. was running 15psi then and I
had a bad Boost leak.if you listen
close you can hear it start to break lose in top end of third. the car is
running way beter now. and now running 20psi daily.
Mazda Rotary with 6-speed PPG DOGBOX transmission ... example video.