I pressurized the system to about 10 psi with my little contraption. Up top I cant hear anything, but when I get underneath I can hear a leak. It's not comeing from either boot. It sounds like its coming from the front of the engine. Is there some where I'm not looking and should be?

 

intercooler...

 

It doesn't sound like its the intercooler. I listened around it and the leak couldn't be heard as well around the intercooler.

 

I'm a litttle more familiar with the 24V set up, but I have found some top intake plate gaskets blown out. Get a spray bottle with some water/dish soap mix in it and spray around. You might find bubbles.

 

Yup! Soapy water is the only way I found 3 small leaks on mine...2 at the intercooler "exhaust" tube and one on a boot that only showed when expanded. Take it to 20 psi if you can...will make it easier to find.

RJ

 

any links to this contraption? we are looking for some long lost power and think there might be a boost leak or two in the system

 

my little contraption was east to fix. I took a 4" pvc cap the flat one and drilled a hole small enuff to pull a valve stem in. next i took a 1/8 npt tap and tapped for air pressure gauge and screwed it in. then took 4" fernco and put it on turbo intake. the 4" fernco is a little big so you have to really crank it down in the turbo or it will pop off under pressure.

 

I built one from Home Depot parts.

4" cleanout PVC screw plug with the square end for a wrench
4" threaded end to receive the screw plug above
4" rubber flexible joint to join 2 regular 4" PVC pipes
1 air chuck tapped into the square end where you would use a wrench on the screw plug

I had to use C clamps to hold it on the turbo above about 20 psi. C clamp end on the bearing side fo the turbo intake housing, screw part of the C clamp on the 4" cleanout PVC screw plug. Keeps the adapter from blowing off the turbo intake cause you can not tighten the large hose clamps enough to keep it in place.

I had a boost leak in the tubing that went to my boost gauge.

Hope this helps,

Bob Weis

 

I built my contraption today and tested my system...I've not had a problem pushing 50 psi with the B-1, but the bottom end seems very laggy and my temps are higher than expected (1300 no load, box off)...
I found a very small leak on the tubing fitting going to my pressure guage...but I'm also wondering about something else...reading in the past threads, I was expecting to be able to pressure the system up and maintain a pressure with no problem...I'm having to crank the pressure on my compressor up to about 60 psi in order to keep 15psi on my system and it takes about 1 1/2 minutes to get there...I sprayed the whole system down with soapy water (from air hose to intake) and could not find any other leaks...but I can still hear air moving into the system and my compressor kicks in and out...and just for giggles, I went to the tail pipe and listened...maybe I'm crazy but I thought I could hear the air flow... or maybe it was just conducting through the exhaust pipe from the turbo, not sure didn't have time to finish my test cause it was starting to rain...
I guess my main questions are if I should be able to maintain pressure on the system without feeding a lot of air pressure to it constantly and if so, could I have intake valves that are leaking?

 

If you have done injectors or lines and not replaced all the manifold bolts that could be your leak.

 

Replaced injectors twice...275's and Mach 4's...all bolts seem to be in place and the soapy water did not show any leaks...???

 

I had one that would set up a deafening whistle at boost pressures above 20 PSIG. I would have sworn it sounded like it was coming from the left side of the engine - like the intake elbow. After changing elbow/grid heater gaskets, checking and tightening intercooler piping clamps, etc. for days, I finally checked the back of my boost gauge - bingo! The hose was pulling out of the clamp. Reclamped it with double clamps and problem solved.

Rusty