Engine/Transmission (1998.5 - 2002) Arrrrggg ... boost leak 2 weeks before indy,what diameter is the turbo out/ intake in

[2broke2smoke]

less than two weeks before indy my boost has been creeping down, egts creeping up ...



today i 1)adjusted valves ... 1 hour and it needed it anyway



2) swapped out the highflow afe for a bhaf ... lost 4lbs boost



so i know its not loose valvetrain or bad airfilter



i want to make/get a plug to plug off the boot at the outlet side of the turbo and boot at the inlet side of the intake, install a tire valve and pressure the hoses and intercooler up to 40 psi and listen for leaks



so what are the diameters of the plugs i need ?



rough measurement looks like 3" anyone know?

 

[LOtero]

sounds like the same thing thats happening to me. someone said there was a diagram somewhere on here, i havent had a chance to do a search have you?

 

[2broke2smoke]

mine were 3" ...

lid from a maxwell house instant coffee jar fit perfect

put a tire valve in and 20psi later ... found a leak at passenger side intercooler boot



also found a leak at the wastegate hose, it fell off the actuator when i checked it with my fingers



temporarily plugged off the wastegate ... truck runs the best it ever has ... and it dyno'd 505 when the turbo was new



blew a freshly cleaned and installed turbo boot the first time i turned the box on ...



after two months it was the happiest BOOOM i've ever heard