2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Which BOV has a pretty shrill sound to it?

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Old Aug 3, 2005 | 03:43 PM
  #26  
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how much for the inserts?
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Old Aug 3, 2005 | 03:55 PM
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the inserts are 50 bucks on ebay i think, i thought there was two tho, the gold and the purple, which is what i have, the gold is apprently much louder.
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Old Aug 3, 2005 | 04:15 PM
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the SARD R2D2 has very distictive sound.. not overly 'shrill' more like a soft sounding air brake purge. But the sound Db. is based more on the ammount of high press. air your pushing through the outlet at a given moment.
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Old Aug 3, 2005 | 04:20 PM
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i think im gonna go with the HKS SSQV
cause it comes in a kit. And i like the sound from what ive heard.
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Old Aug 3, 2005 | 04:23 PM
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$370 for the FC kit @ www.hksusa.com
$25 for the inserts
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Old Aug 3, 2005 | 04:31 PM
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do i have to have the inserts?
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Old Aug 3, 2005 | 04:33 PM
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it comes with a silver insert.......you only need them if you want to change the sound.

The HKS SSQV silver triple-fin discharge design produces a powerful and unique aggressive blow-off sound along with added visual distinction. Additional triple-fin inserts are available in gold (standard high frequency sound) for visual appeal and in purple metallic (emits a lower frequency sound than both the standard and gold SSBV inserts) for an alternate sound and appearance. SSQV inserts are easily interchangeable within minutes.

Last edited by Madrx7racer; Aug 3, 2005 at 04:36 PM.
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Old Aug 3, 2005 | 04:41 PM
  #33  
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I see. well for now i can live with the sound. I need that money for shipping lol
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Old Aug 3, 2005 | 04:43 PM
  #34  
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what are your mods? Do you KNOW what a BOV is used for btw?
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Old Aug 3, 2005 | 04:47 PM
  #35  
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I dont have this motor yet. Im pricing all the parts. And will buy and install all of them soon. That should be interesting....
A blow off valve is used to relieve pressure created in the turbo system. Does it not regulate PSI desired as well?
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Old Aug 3, 2005 | 04:57 PM
  #36  
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relieves the pressure when you let off the gas and keeps it from making the turbine spin the opposite way (which reduces the life of the turbo)....the screw in the back is used to set the relief PSI....good luck.....I'd focus on everything else aout the TII swap and THEN worry about the BOV
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Old Aug 3, 2005 | 05:10 PM
  #37  
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thanks for the helpful info
exactlly how hard is this swap. Cause when the motor is out of the car its easy to hook up all this stuff right?
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Old Aug 3, 2005 | 05:13 PM
  #38  
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just for the love of god, whatever you unplug or disconnect, label it or something. don't forget where sstuff goes.
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Old Aug 3, 2005 | 05:19 PM
  #39  
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I was planning on it. I'm doing this right. I want it to be organized and clean.
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Old Aug 3, 2005 | 07:18 PM
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I'm going to have to agree with the HKS being the most annoying sounding bov... I live next to a big street and all I hear is HKS day and night...
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Old Aug 3, 2005 | 07:45 PM
  #41  
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I LOVE the HKS...it's loud and sounds sexy. ...The ONE thing keeping my from getting it is EVERYONE I know who has a turbo has it Even another 10th ae JUST like mine. I don't want to sound the same as his.
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Old Aug 3, 2005 | 09:47 PM
  #42  
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im going to conduct a lil study on the hks ssqv. i have a lil ebay bov that has a brass piston i ported that holes bigger and clipped the spring a lil to make sure it was doing its job. i think my ebay butcherd special removed more air than my ssqv. the reasoning? well i have yet to let off a backfire with the new HKS SSQV (has no adjustment screw) . to me this just says its not getting rid of air fast enough. also in order to make that loud *** whistle LOUD i think it has a reduced exit size which increases the velocity increasing the pressure on that cool(sometimes annoying) whistle also means more backpressure. something else that makes me think that its not releasing enough air fast enough is the fact that i can hear it whistle blipping the throttle at low rpms and releasing throttle deep into vacuum. I think im hearing the increased velocity of a smaller hole making noise. i have datalogging im going to test pressure release with.. i have other things to worry about right now. but id say get the original ssqv or some other valve that everyone else doesnt have. i bought mine becuase i already had the piping for it.....
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Old Aug 3, 2005 | 11:58 PM
  #43  
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i hav ethe blitz super sound and it sounds great, probably one of the loudest valve that i have heard, or you can get fancy and get a forge blow off valve so you can sound like a rally car =)
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Old Aug 4, 2005 | 12:35 AM
  #44  
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I was running 14 psi on the Type-R with std. spring. Has a nice hisss under no to low boost and a great whoosh under higher boost.
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Old Aug 4, 2005 | 01:36 AM
  #45  
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My rule of thumb when performing a swap is, it will be 3x harder then you think no matter how much NFO you read. Second it will cost twice as much as thought and planed :-D

The Type S and SSQV sound annoying as hell! I would use ear plugs if I drove a car daily with them. :-/ Using type RS here sounds great. Anyways it dos not really mater unless you are running a EMS basing MAF on manifold pressure. If not you should recalculate it therefore sounds make no matter.

https://www.rx7club.com/showthread.p...&highlight=BOV
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Old Aug 4, 2005 | 12:45 PM
  #46  
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well I finished my swap in 8 (8hr.) days.......it took me a whole 3 days to completely gut my old TII (to the frame) for a total of 11 days.......label everything and take plenty of pictures. should be plug and play if it is within the same series.
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Old Aug 4, 2005 | 01:33 PM
  #47  
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Type RS is nice and woosh sounding. Louder then stock, but not annoying to drive on a daily basis. That's what I wanted.
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Old Aug 4, 2005 | 02:19 PM
  #48  
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I have the Apexi BOV. I love the sound.

A deep PSSSHHHHHHHHHH sound. I woudl get annoyed quick with the bird chirpish BOV.
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Old Aug 4, 2005 | 02:53 PM
  #49  
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^ thats why I went with the RS and posted them sound clips :-) I love that BOV. The chirp ones give me a headach.
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