2nd Generation Specific 1986-1992 Discussion

Stock Bov Not Opening?

Old 03-22-2004, 10:57 PM
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Join Date: Jul 2003
Location: MN
Posts: 392

I'm getting the fluttering sound from my bov when I release the throttle under boost. I am boosting up to 10 #s right now on the stock turbo. My old apexi unit fluttered and so does my used blitz unit. I have it hookedup to a vacuum/psi source, and I have played with the spring settings on it to no avail. I have heard the flutter sound before on other stock turbo cars with upgraded bovs. I think its the sound of compressor surge. My old stock bov sounded right.So whats going on?
TII777 is offline  
Old 03-23-2004, 05:36 AM
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Join Date: May 2003
Location: Dover DE
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Make sure the vacuum source is behind the throttle plate, when the plates close a vacuum is created which should open the valve, if you have the source before the plates you are providing a boost source to the BOV and all you are doing is holding it closed real well
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Old 03-23-2004, 12:58 PM
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Location: Peoria, AZ
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opps. We shall try that.
1Revvin7 is offline  
Old 03-25-2004, 04:00 PM
Join Date: Mar 2004
Location: Coon Rapids, MN
Posts: 84

Yea, we shall check that out.
turbo2fc90 is offline  
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