Mazda Rotary Club

General => General Technical => Anything Engine/Performance/Tuning related => Topic started by: Casanova21 on July 15, 2007, 04:30:11 PM

Title: dump valve question
Post by: Casanova21 on July 15, 2007, 04:30:11 PM
this may seem a silly question but i am after a dump valve 4 my rex and wanted to know what the best ones are and whether or not u need 2 of them since it is a twin turbo???
Title: dump valve question
Post by: DC-TYPER on July 15, 2007, 04:38:03 PM
they have a bov as standard mate...
 
you only need the one if you do mod it
Title: dump valve question
Post by: Casanova21 on July 15, 2007, 04:39:10 PM
cheers 4 that mate :)
Title: dump valve question
Post by: rx7veilside on July 15, 2007, 06:24:47 PM
they  dont have a vent to atmo as standard if u want the dump valve noise u will need to mod it..bailey are cheap and do the job fine..dont waste money on hks etc they are too pricey
Title: dump valve question
Post by: peterwolds on July 15, 2007, 06:44:48 PM
i got twin forge vent to air on mine from forge motorsport
Title: dump valve question
Post by: Ricco_04 on July 15, 2007, 07:46:40 PM
You can mod the standard one to vent to atmosphere, but you can hear it vent all the time on partial throttle.

I have tried several aftermarket ones but not really any advantage that I have found for me TBH.
Title: dump valve question
Post by: shaggy on August 09, 2007, 11:50:09 PM
I just replaced my bov\'s with bailey examples but like ricco 04 said when on partial throttle you can hear it venting and with the bailey that becomes a squeak. It\'s a bit annoying. Can anybody recommend a cheapish dump valve that has more of a whoosh noise that i can try out. What does a forge sound like?
Title: dump valve question
Post by: m4drx on August 09, 2007, 11:59:03 PM
shaggy if you come to rs4 listen to mine and ill listen to yours and maybe we can swap. i have a HKS big metal trumpet and i love it but its too wooshy in the sense that is vents easily and wooshes loud when boosting but im after a certain sound sqeeky tbh so if its it ill swap
Title: dump valve question
Post by: shaggy on August 14, 2007, 02:25:56 PM
Sounds like a good idea but i need two.