-
Hey Guest one of our sponsors Progressive Parts is running Black Friday and Cyber Monday offers - more details here
advantages of a dv?
- Thread starter jason-jm
- Start date
-
- Tags
- advantages
my understanding is that a recirc is quieter. and therefore more to the taste of non-petrol heads.
a dump valve to atmosphere i think may technically have less resistance to the action of dumping, and would also avoid introducing air already worked by the turbo back into the inlet.
as for WRC, they use a different system that you wouldnt want on a road car unless you want to change the turbo every few weeks.
i believe they run anti-lag systems, so that the turbo doesnt slow down when changing gears. you get a funny squeeling sound which i think is something to do with the turbo as it continues to spin but the engine momuntarily is not using this charged air.
technically any air dumped is effort wasted, so from a performance point of view WRC cars avoid this. However when you consider what a DV does, its there for reliability, which IS something you want on a road car.
im sure someone will give you a more scientific answer shortly.
a dump valve to atmosphere i think may technically have less resistance to the action of dumping, and would also avoid introducing air already worked by the turbo back into the inlet.
as for WRC, they use a different system that you wouldnt want on a road car unless you want to change the turbo every few weeks.
i believe they run anti-lag systems, so that the turbo doesnt slow down when changing gears. you get a funny squeeling sound which i think is something to do with the turbo as it continues to spin but the engine momuntarily is not using this charged air.
technically any air dumped is effort wasted, so from a performance point of view WRC cars avoid this. However when you consider what a DV does, its there for reliability, which IS something you want on a road car.
im sure someone will give you a more scientific answer shortly.
Last edited:
im sure even WRC cars dont use anti lag as its too loud??? and there is certain noise restrictions in different comps!! could be wrong though
Plenty of rally cars Ive heard use anti lag...
If doesnt get that loud until the car is going properly and they'd pass the restrictions with ease if it was only a small rev..
So as a conclusion..
Motorsport = avoid DV
everyday use = use one
thanks people
If doesnt get that loud until the car is going properly and they'd pass the restrictions with ease if it was only a small rev..
So as a conclusion..
Motorsport = avoid DV
everyday use = use one
thanks people
Crowder
Guest
btcc cars dont run dv either as they are banned
the purpose of a dv is to release the built up back pressure caused when the throttle plate closes. if this pressure is not released it causes the turbo to slow quicked than designed and possibly stall indefinately it WILL eventually cause you turbo to fail and basically cost you a lot of money
the purpose of a dv is to release the built up back pressure caused when the throttle plate closes. if this pressure is not released it causes the turbo to slow quicked than designed and possibly stall indefinately it WILL eventually cause you turbo to fail and basically cost you a lot of money
Crowder
Guest
yyeh sorry i understand that i've had a coupel of turbo cars last being a 300bhp focus rs. i just meant i read somewhere on the forum then turn the valve around so its the wrong way... i'd love to remove but yeh i guess forcing it back through the blades isnt idea but sounds good lol!
So its all done to reliability, dont understand why they aren't on cars as standard then
Crowder
Guest
they are on standard cars the recirc valve is the same as ur orginal in design and looks its just uprated and not plastic. it dumps the boost back into ur intake thus the recirculation. a load dv vents it to the air hence the noise assosiated with them!!
Similar threads
