Mazda Rotary Club

Cars by Model Type => 3rd generation RX-7's => Topic started by: Kevin on March 02, 2008, 04:23:53 PM

Title: Blow off valves....
Post by: Kevin on March 02, 2008, 04:23:53 PM
This is a gay thread about blow off sounds.....

Ok every car I seem to import has a HKS super sequential valve on it, and indeed even my own car has one on and frankly im sick of the sound of the high pitched chirping bird.

So im wondering who has what on there car?  As im after a change.

I\'ve got a few options:

1.) Blitz Supersound
2.) Greddy Type RS (the new one)
3.) Apexi Supersound (although whenever i\'ve had these the ring to adjust it has always seemed loose and never stayed in the set position
4.) HKS new super sequential...... but I assume it still has the same sound as original?
Title: Blow off valves....
Post by: Jono FD3 on March 02, 2008, 05:04:27 PM
I\'ve got the HKS one & it has got one single dump of pressure..... if you are getting a chirping more than likely it is turbo surge (wastgate chatter as it is more comanly known) basicaly the pressure spring is too tight & it is not venting to atmosphere!

Jono
Title: Blow off valves....
Post by: Jin Kazama on March 02, 2008, 05:15:51 PM
I have a Sard R2D2 - does the job, doesn\'t chirp and makes an ok sound.
Title: Blow off valves....
Post by: rx7veilside on March 02, 2008, 05:59:54 PM
all hks one chirp..cheapest i have found and used is the bailey one but any other type will do the job..just they can be a bit pricey for the jap ones
Title: Blow off valves....
Post by: strange_days_uk on March 02, 2008, 06:47:52 PM
I have greddy RS and I love it.  Makes a slightly dampened woosh
Title: Blow off valves....
Post by: Kevin on March 02, 2008, 09:22:40 PM
Quote from: strange_days_ukI have greddy RS and I love it.  Makes a slightly dampened woosh

Funnily enough im leaning towards this type!
Title: Blow off valves....
Post by: m4drx on March 02, 2008, 09:36:35 PM
not too sure on the type rs as i had a brand new one and didnt really sound great at all.

i have an old HKS SSV on mine and its a very loud WHOOSH.

there are alot of vids on youtube which may help you decide but boost is a bif factor.

Also if you get a vented bonnet the sound increases so much that i think you end up not caring as much about the sound as its so loud its great.

:)
Title: Blow off valves....
Post by: J.j. on March 03, 2008, 12:07:10 AM
i have a brand new still in box turbo smart plumb back BOV for sale if you are interested?
Title: Blow off valves....
Post by: monkey-fd3s on March 03, 2008, 12:21:58 AM
(http://www.turbosmart.com.au/images/985.jpg)

I\'ve got one of these :) Turbosmart raceport :)
Title: Blow off valves....
Post by: rx7veilside on March 03, 2008, 05:40:19 PM
monkey did u weld this onto pipe and did u use the standard spring it came with..thks paul
Title: Blow off valves....
Post by: monkey-fd3s on March 04, 2008, 12:59:38 AM
Yeap & Yeap :)

No pics yet because the intake tube isn\'t fitted to the car yet :)  They do a sleeper series one now as well....