Boost What Boost?

[Gamble]

Pretty simple question here.

 

I am going to put together a BLDC.  (boost leak detection contraption) as I feel I have a small leak in the upper boost pressures (only seeing about 24psi)  What do you use, how did you build it and what parts are used to build it?

[Mopar1973Man]

Here is my test boot.

 

4" sewer boot

small piece of 4" pipe

one ABS sewer cap

one air chuck fitting

[Gamble]

Thanks Mike, 

 

I had actually just watched your video and it made me ask "what did Mike use?"  

[dorkweed]

Are you sure that you're getting the "fueling" to produce the "boost" that you want???

 

Boost is a "resistance to flow" ………to quote AH64ID………………..you need fuel to produce boost.  Make sure you've got it!!

[Gamble]

I would imagine I have enough fuel to get over 24 psi. I'm running a hot unlocked edge comp with plenty of fuel pressure. But maybe your right.

[hex0rz]

Do you have lots of black smoke and high EGT's?

[Gamble]

No sir, I have some black smoke (very little) but EGT's never get over high 1100's.

[dripley]

do you have a boost elbow on the turbo or something else to keep the waste gate closed until higher pressures are reached?

[Gamble]

I do have a non adjustable boost elbow from industrial injection.

[dripley]

Sounds like it is time for a trip to the hardware store and make a BLDC.

[volkswagon]

I would imagine I have enough fuel to get over 24 psi. I'm running a hot unlocked edge comp with plenty of fuel pressure. But maybe your right.

I have the same setup and can hold 35 psi. Without my boost elbow I could spike 45.

[Gamble]

That's what I would expect. I am sure there are many possible factors, I may have an injector or two getting tired, may have a boost leak. Not sure but as always the mopar family helps narrow things down. Thanks guys. Any other input is appreciated.

Edited February 5, 2014 by Gamble

[Mopar1973Man]

That's what I would expect. I am sure there are many possible factors, I may have an injector or two getting tired, may have a boost leak. Not sure but as always the mopar family helps narrow things down. Thanks guys. Any other input is appreciated.

 

This why I typically suggest the compression test and pop testing of the injectors together. Because if your going to yank the injectors out to pop test you might as well test the cylinder health too by running the compression test too. Now you know the cylinder health and the injector health in one pass with two tests.