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Old Mar 11, 2004 | 10:55 PM
  #1  
homesauce's Avatar
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From: Los Angeles, CA
Default no boost

Well here's the situation, after all this time diagnosing this and that, I finally got my car running. BUT:

As I finally got the car to a dyno, we found that I was only hitting 3.5 psi, and 167whp on a dynopack (the guy claims it reads 15% lower than dynojets but even so still really low). So my wallet is running thin, so we just tuned it at 3.5 psi, and called it a day, and it's where I'm at now, driving it around.

But now, it doesn't make any boost at all, and this is what I think:
Since I have essentially a fmax kit, I probably have a air leak where the 2 MF2 extra injectors go by the throttle body or by the intercooler rubber clamping points since i just put some plastic caps on there for the time being. I haven't found anything good to seal up those holes, any suggestions? They also told me to put T-clamps on the intercooler piping, but I'm not familiar with those.
The wastegate is a 35mm tial and the spring is set at 7psi, so I'm not really sure what's goin on, I should at least be making SOME boost. Not all of the boost would be lost from a small leak correct, i cannot reach any positive pressure whatsoever? Vacuum line is run from FPR to BOV, and from turbo compressor to wastegate. Could it possibly be a vacuum line routing problem?

Turbo sounds good, so I dont think it's that, wastegate seal ring is in there (finally), and timing is retarded 2 degrees via distributor rotation. Stock H22A1, compression good. Check valve installed.
Suggestions are very much appreciated.



Modified by homesauce at 8:06 AM 3/12/2004
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Old Mar 12, 2004 | 07:04 AM
  #2  
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From: rotterdam, the Netherlands
Default Re: no boost (homesauce)

Can you see if the wastegate is stuck open or not??

Try to go over the piping and take it apart piece by piece(from turbo to intercooler etc etc) and try to "feel" the air traveling trough the piping.

Do you actually see the wheel in the turbo spinning(air inlet side).

You can T the FPR to the BOV sure, but you can also use another vacuum point on the intake manifold if you'd like. Intake to FPR.....T piece......BOV is that how you installed it?? Cause you've written down vacuum line from FPR to BOV. If you installed like that, then your BOV wouldn't work and the FPR would be closed, and would up the fuel pressure a little bit.

Goodluck
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Old Mar 12, 2004 | 12:36 PM
  #3  
homesauce's Avatar
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Default Re: no boost (musclefella)

Yes it's T-ed from the FPR to the BOV, yea, I will try to take a closer look at the turbo and wastegate, although I doubt it's stuck open.
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Old Mar 12, 2004 | 01:06 PM
  #4  
musclefella's Avatar
 
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From: rotterdam, the Netherlands
Default Re: no boost (homesauce)

Let The guys here know how things go, we are bound to find out the problem for you.

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Old Mar 12, 2004 | 01:56 PM
  #5  
sharkcohen's Avatar
 
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From: East Bay, CA, USA
Default Re: no boost (homesauce)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by homesauce &raquo;</TD></TR><TR><TD CLASS="quote">by the intercooler rubber clamping points since i just put some plastic caps on there for the time being. I haven't found anything good to seal up those holes, any suggestions? They also told me to put T-clamps on the intercooler piping, but I'm not familiar with those.</TD></TR></TABLE>
What do you mean you just put plastic caps on them? Sounds like the piping is your problem, or these "holes" your are talking about. All the connections need to be tightly sealed, or you will blow all the boost right out the joints.

It's pretty much a no-brainer that if you have holes or unsealed joints that the boost is going to blow right out of them.
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