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Location:
Balranald
Registered:
May 2002
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Blow Off Valve ~ What type is this one?
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Tue, 06 May 2003 08:49
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I just downloaded a great video of an R34 Skyline and it had the best BOV i've ever heard.
The video is from.....
http://www.racingflix.com/getvideo.asp?v=293&p =6
It's 22.5meg but a really cool video that shows how hard a mildly modded Skyline goes...and that BOV!!
I'd love to find out what kind it is or one that makes the same noise.
Cheers
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I supported Toymods
Banned User
Location:
Brisbane
Registered:
May 2002
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Re: Blow Off Valve ~ What type is this one?
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Tue, 06 May 2003 10:53
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Can we have a login and password so we can download it?
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Location:
Brisbane
Registered:
January 2003
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Re: Blow Off Valve ~ What type is this one?
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Tue, 06 May 2003 13:35
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Problem is you don't hear the police sirens when they come up behind you to pull you over, or the sound of someone taking a shovel to your car when they find out its yours making all the noise 
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Location:
Southern Sydney
Registered:
August 2002
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Re: Blow Off Valve ~ What type is this one?
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Wed, 07 May 2003 00:12
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I think I've seen this one before.... I believe the brand was..ummm Rice. Yes that was definetly it. 
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Location:
Balranald
Registered:
May 2002
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Re: Blow Off Valve ~ What type is this one?
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Wed, 07 May 2003 03:57
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| Cool1 wrote on Tue, 06 May 2003 20:53 |
Can we have a login and password so we can download it?
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I put my password and username in the day I signed up and they haven't asked for it again. I don't know what it is.
It only takes 2 seconds to sign up anyway.
Then you can d/l all the vids. There are some great ones in there.
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Location:
Balranald
Registered:
May 2002
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Re: Blow Off Valve ~ What type is this one?
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Wed, 07 May 2003 03:59
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| Remedy wrote on Wed, 07 May 2003 10:12 |
I think I've seen this one before.... I believe the brand was..ummm Rice. Yes that was definetly it.
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Yeah I hate rice boys as much as the rest of you. But hey gotta love a good BOV. I hate the ones that go psssh. They are RICE.
This one doesn't....it's just great
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I supported Toymods
Location:
south of the big smoke
Registered:
May 2002
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Re: Blow Off Valve ~ What type is this one?
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Wed, 07 May 2003 04:19
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is it the super squential that go psst psst pst?
remedy i thought u were dead!! turn ya icq on once in a while!
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Location:
Balranald
Registered:
May 2002
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Re: Blow Off Valve ~ What type is this one?
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Wed, 07 May 2003 05:47
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I think my friends car came with a Super Sequential....it's a HKS one anyway.
It screaches....not a good sound at all.
When you go 1/2 gas and take off it's ok but not all the time.
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Location:
Balranald
Registered:
May 2002
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Re: Blow Off Valve ~ What type is this one?
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Wed, 07 May 2003 05:48
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The one in this video makes more of a Woo Woo Woo sound
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I supported Toymods
Banned User
Location:
Brisbane
Registered:
May 2002
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Re: Blow Off Valve ~ What type is this one?
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Wed, 07 May 2003 09:04
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I couldnt even hear it  It is most likely that it is a a HKS item though. Just remember that you can tighten it up and it gives a much lower pitch noise 
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Registered:
December 2002
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Re: Blow Off Valve ~ What type is this one?
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Thu, 08 May 2003 04:00
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sounds like an ARC blow off valve...I know because I run one in my vr4 and its venting to atmo
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Location:
Melbourne.
Registered:
June 2002
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Re: Blow Off Valve ~ What type is this one?
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Thu, 08 May 2003 04:28
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Its not a BOV, its flutter (compressor surge).
If you want this noise, just block or take off your BOV.
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Blow Off Valve ~ What type is this one?
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Thu, 08 May 2003 04:44
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Nah, it sounds like a recirculating BOV dumping a lot of boost with a pod filter.
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Location:
Melbourne.
Registered:
June 2002
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Re: Blow Off Valve ~ What type is this one?
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Thu, 08 May 2003 05:44
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Mate, its flutter no questions about it.
It basically is an aural phenomenon that happens when you have the following mods:
a: Run NO BOV (or are running too tight an adjustment)
b: Run a large intercooler with large pipes (resonates the sound)
c: Run a Pod filter.
What is happening is that Boost is hitting the closed throttle, instead of venting that pressure thru a BOV (which u dont have), it forces its way back through the compressor, resulting in compressor surge. The noise produced can be described from anything to a cricket/pidgeon.
Most noticeable flutter would have to come from RB30ET's (VL Turbos) with large truck intercoolers, large pipes, pod and a highflowed t03 or t04. Go down Chapel St on the weekends and you'll see VL T after VL T fluttering away! And its damn loud 
You can get BOVs that sound high pitched (HKS SSQ), but anybody SHOULD be able to tell the difference between a BOV and flutter.
A recirculating BOV does not sound that loud! U need a big ass recirculating pipe do make a recirculating BOV sound that loud.
Besides, if u look at the MinesR34 website, there aint no BOV on that r34.
[Updated on: Thu, 08 May 2003 05:46]
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Location:
Balranald
Registered:
May 2002
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Re: Blow Off Valve ~ What type is this one?
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Thu, 08 May 2003 05:49
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| LowRollaBoy wrote on Thu, 08 May 2003 14:28 |
Its not a BOV, its flutter (compressor surge).
If you want this noise, just block or take off your BOV.
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Blocking mine off today if that is the case. ha ha
I love the sound!
I would like a BOV but some of the ones friends have do sound mega rice. Type 2 Turbosmart ones are good examples. I don't want loud....i just want that "woo woo" sound
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Location:
Melbourne.
Registered:
June 2002
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Re: Blow Off Valve ~ What type is this one?
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Thu, 08 May 2003 05:54
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Yer flutter rocks! My friends have run bovless for 2 years, myself i ran my mr2 without a BOV for 10 months, no damage to our turbos whatso ever. I mean there is increased pressure there, but theres so much more that can damamge an turbo over its life. Besides, compressor surge/flutter isnt proven to damage your turbo, its like saying a BOV increases performance, but no dyno tuner has shown a difference in HP with a BOV.
I used to have a Turbosmart Type III Supersonic, u can imagine what a Type II sounds like, but a Type III is just too stupidly loud!! Very cool though lol.
But flutter is legal lol!!!
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Location:
Melbourne.
Registered:
June 2002
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Re: Blow Off Valve ~ What type is this one?
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Thu, 08 May 2003 06:03
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Belive it or not... BOVs dont come standard in some cars.
FJ20ET's, RB20DET's, RB30ET's, 15ET's, 12A T, 13b T etc etc didnt run BOVs in the early days, these cars lasting to today are proof that u dont need a BOV to increase turbo life.
Its the same with turbo timers. You dont need them, their for lazy people. Its actually proven better to cruise slowly 1-2 mintutes before your destination, rather than to let your car sit there and idle away for 5 minutes.
My brothers Rx3 sat there idleing away for 5 mins everytime he took it for a drive, the engine/oil temp/water temp all ROSE!
Which is why most of our mates now just drive sedately, let some nice cool air to cool the engine down then pull up and turn the car off.
One theory was that BOVs basically there to prevent flutter and to quieten down a motor vehicle. Cars these days are designed to be quiet. I mean most imports and car tuners these days in the aftermarket scene esp in japan dont use BOVs anymore. I know that their engines and turbos are rebuilt more frequently, but if you choose to keep one on then by all means try!
im just saying that theres no proof that running BOV-less is damaging in the long run, when the main culprit of failing turbos is poor filtration, upping boost close to a turbos efficiency range, and poor maintenence (oil changes).
Anyways IMHO, externally vented BOVs are ghey
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Blow Off Valve ~ What type is this one?
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Thu, 08 May 2003 06:06
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I can understand what you mean by not all turbo engines are made with them, but name one thats currently produced that didn't have one?
As for the aftermarket not using them, I don't know anyone who has rebuilt one and has chosen to remove it altogether from their engine.
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