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Old 10-23-2002, 06:17 PM
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Default fluttering blow off valve?

i have a SOHC vtec/turbo set up. D16y7/8 motor. .0020 mm thicker head gasket, ported head, 5 angle valve job, adjustable cam gear, high flow fuel pump, adj. fuel regulator, exhaust. When i boost, my blitz ssqv flutters when it purges. is it supposed to sound like that? I purge it at any boost level, and its the same..flutter flutter. <shrug>
Old 10-23-2002, 06:18 PM
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Default Re: fluttering blow off valve? (JDMB16ACRX)

Have you tried loosening it?
Old 10-23-2002, 06:24 PM
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Default Re: fluttering blow off valve? (Etylorcen)

yup loosened, tightened. same o same o.
Old 10-23-2002, 06:55 PM
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Default Re: fluttering blow off valve? (JDMB16ACRX)

mine does the exact same thing only on like 1 lbs or 2 lbs
Old 10-23-2002, 06:59 PM
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Default Re: fluttering blow off valve? (Devin17)

do you have a air filter connected to your turbo?
Old 10-23-2002, 07:10 PM
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Default Re: fluttering blow off valve? (JDMB16ACRX)

I think its just the noise that it was meant to make...kinda like psshs shhs shhhs shhsh shs

edit: here I have this video of a gsx-r bike pushing 30 psi on my school webbysite...does your bov sound like this? This is what my Blitz ss sounds like...

http://students.salisbury.edu/~sas0661/gsxr.mpeg

RIGHT CLICK, THEN SAVE TARGET AS...


[Modified by B18EG6, 11:12 PM 10/23/2002]
Old 10-23-2002, 07:43 PM
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Default Re: fluttering blow off valve? (B18EG6)

yea...that is what it sounds like...sorta....i guess its the way it is
Old 10-23-2002, 07:49 PM
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Default Re: fluttering blow off valve? (JDMB16ACRX)

Sounds like it's not opening soon enough and the turbo is backing up a little. Check your vacuum source. You might need to give the bov it's own source without anything tee'd in to it.
Old 10-23-2002, 08:04 PM
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Default Re: fluttering blow off valve? (tony1)

hmm...thats a good idea...i will check that
Old 10-23-2002, 09:46 PM
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Default Re: fluttering blow off valve? (JDMB16ACRX)

I used to have one it wouldnt open at all. I actually had to take it apart and relube it and it worked fine after that.
Old 10-23-2002, 09:49 PM
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Default Re: fluttering blow off valve? (drealboostedhybrid)

My vortech did that for months, tried ALOT of different methods of tight/loose... eventually I loosened it nearly all the way and now it sounds REAL nice, no more dead bird under the hood sound...
Old 10-23-2002, 10:52 PM
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Default Re: fluttering blow off valve? (shadowdawn)

sometimes that fluttering is just the wastegate.. u might have ur spring in ur blow off valve too tight and it's not opening up.. i had the same problem.. i thto something was wrong w/ my bov until i loosened the spring.. it turned out the whole time i was hearing a wastegate..
Old 10-24-2002, 06:54 AM
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Default Re: fluttering blow off valve? (xjdm94x)

if its the wastegate....what can i do to remedy that?
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