| BOV hiss - Click HERE for Original Thread |
| brandon |
| How does a BOV work and why dont all turbo cars have that hiss noise at shift? My buddies 89 Probe Gt makes no BOV noises. |
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| Alpha Gangsta |
| from my understanding BOV's let off excess pressure from the Turbo. Not necessary at all but something cool to have. Its supposed to improve response for the turbo too I htink. Its just not necessary for a Turbo car....but cool to have. I could be wrong though. I'm not the most knowledgeable about this subject. |
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| CYA |
| the "hiss" comes from the BOV venting to atmosphere. _most are not set up this way. _BOV's are not limited to turbo cars... supercharged cars also use BOV's.<p>BOV's are basically a valve which prevents the compressor from "backing up" when the throttle is closed. they open when vacuum is present.<p>cya<p>(Edited by CYA at 8:20 am on Sep. 18, 2001) |
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| Alpha Gangsta |
well...there goes what i said.
shiet.
oh well.....learn somethign new everyday I guess. |
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| CYA |
<!--QuoteBegin--></span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote </td></tr><tr><td id="QUOTE"><!--QuoteEBegin-->Quote: from Alpha Gangsta on 8:50 am on Sep. 18, 2001
well...there goes what i said.
shiet.
oh well.....learn somethign new everyday I guess.[/b][/quote]<p>actually your post is correct as well. not too sure on what you meant by letting off excess pressure but you're right in that BOV's aren't always necessary and that they improve response times. <!--emo&:)--><img src="http://www.asianet.ca/images/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'><!--endemo--><p>cya |
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| smooth |
<!--QuoteBegin--></span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote </td></tr><tr><td id="QUOTE"><!--QuoteEBegin-->Quote: from CYA on 8:18 am on Sep. 18, 2001
the "hiss" comes from the BOV venting to atmosphere. _most are not set up this way. _BOV's are not limited to turbo cars... supercharged cars also use BOV's.<p>BOV's are basically a valve which prevents the compressor from "backing up" when the throttle is closed. _they open when vacuum is present.<p>cya<p>(Edited by CYA at 8:20 am on Sep. 18, 2001)
[/b][/quote]<p>Not entirely correct either. Not all BOV's are open during vaccum. The HKS one I have is closed at vacuum. Several new design BOV's are made the same way. |
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| CYA |
| <!--QuoteBegin--></span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote </td></tr><tr><td id="QUOTE"><!--QuoteEBegin-->Not entirely correct either. _Not all BOV's are open during vaccum. _The HKS one I have is closed at vacuum. _Several new design BOV's are made the same way.[/b][/quote]<p>oh yes... correct. the backwards design. hehe. just kidding ya. <!--emo&;)--><img src="http://www.asianet.ca/images/iB_html/non-cgi/emoticons/wink.gif" border="0" valign="absmiddle" alt=';)'><!--endemo--><p>cya |
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| brandon |
| So which BOV's make noises? And can you install one on any turbo car? |
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| CYA |
| all bov's make noise.<p>yes you can install one on any turbo car. installing one to make "noise"... see my post above. <!--emo&:)--><img src="http://www.asianet.ca/images/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'><!--endemo--><p>cya |
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| TurboBlueNX |
| Heheh, my intake is large enough to hear my BOV even though I have recirculated it <!--emo&:)--><img src="http://www.asianet.ca/images/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'><!--endemo--><p>That's nice to know <!--emo&:)--><img src="http://www.asianet.ca/images/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'><!--endemo--> |
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| Alpha Gangsta |
techniclly.....you can make any car have the BOV noise. They have the BOV Speaker available for all the Naturally aspirated ricers now. hehe. And don;t forget the plastic front mount intercooler too!
I heard that the Blitz BOV is one loud mofo. Anyone have any comments? I'm usign a Type H BOV from TurboXS and I love it. |
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| TurboBlueNX |
| Ah geez, y'know I had the japanese website that manufactured those products sent to my from my buddy in Japan. <p>They have a sample of the BOV sound and it really, REALLY sucks... You'd do better yelling out a Bullhorn.<p>I have the Greddy type S BOV, it's adjustable so I can make it sound like: <PSSSHHHEEeeeooooo> or <PSSSSEEEoooOOOoooEEooo> It's pretty cool.<p>But I think I need to change it out for an OEM style recirculation valve. because my car stalls alot when I stoop for redlights (yes, I do stop) |
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| CYA |
<!--QuoteBegin--></span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote </td></tr><tr><td id="QUOTE"><!--QuoteEBegin-->Quote: from TurboBlueNX on 12:48 pm on Sep. 18, 2001
But I think I need to change it out for an OEM style recirculation valve. because my car stalls alot when I stoop for redlights (yes, I do stop)[/b][/quote]<p>andy you have the cobra mass air meter don't you? if you're having problems idling, surging, bucking... try clocking the meter. it's common on FI fords to do this if the meter isn't clocked to it's liking. just turn it 90 degrees until you find a spot which runs better. if not... you might have to look at where the metered air is being introduced after circulating throught the BOV.<p>as for hearing your BOV... yeah i was wondering about that last time you left wayne's place... yours is the first set up i've heard do that when not venting to atmosphere. must be that pop can construction of jap cars. hahaha! KIDDING!! <!--emo&:)--><img src="http://www.asianet.ca/images/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'><!--endemo--><p>cya |
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| TurboBlueNX |
| I haven't had surging, bucking problems, but I spoke to the master programmer Clark Stepplar at JWT and he said because at idle, the valve should be open to allow the air to flow freely. An OEM style one will do this.<p>But I will try rotating the meter, thanks! <!--emo&:)--><img src="http://www.asianet.ca/images/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'><!--endemo--> Heck if I can do something to improve the drivability for free, what the #### <!--emo&:)--><img src="http://www.asianet.ca/images/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'><!--endemo--> |
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| TurboBlueNX |
<!--QuoteBegin--></span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote </td></tr><tr><td id="QUOTE"><!--QuoteEBegin-->Quote: from CYA on 1:46 pm on Sep. 18, 2001
<!--QuoteBegin--></span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote </td></tr><tr><td id="QUOTE"><!--QuoteEBegin-->
as for hearing your BOV... yeah i was wondering about that last time you left wayne's place... yours is the first set up i've heard do that when not venting to atmosphere. _must be that pop can construction of jap cars. _hahaha! _KIDDING!! _<!--emo&:)--><img src="http://www.asianet.ca/images/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'><!--endemo--><p>cya
[/b][/quote]<p>Oh such great hilarity the jokes that are yours <!--emo&:)--><img src="http://www.asianet.ca/images/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'><!--endemo--><p>I dunno why it's so loud, it's only popping at about 10 to 12 PSI... Just imagine what it sounds like vented to atmosphere? <!--emo&:)--><img src="http://www.asianet.ca/images/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'><!--endemo--> |
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