gay question about turbo 'flutter'

[bnollie]

Would never put a bov on it,there too glanza for me personaly! Dnt mistake me it does flutter nice,just wondering why some other standardish rb's are so loud!

Ps there isnt even a place for a bov on the rb's that came in cefiros

ya i no they dont sound great but if it helps wear on the turbo. The flutter in the videos sounds shit tho. they could have bigger turbos fitted causing bigger boost pressure which will be louder. also what kind of air filter have you fitted?

[thegosson]

put on an apexi induction kit and bobs be your uncle

[Administrator]

I think it sounds hilarious

http://www.youtube.com/watch?v=HpLMk...eature=related

Most SRs sound nice with a bit of flutthhherrrr

http://www.youtube.com/watch?v=LZUbo_mNDZM

[cork kouki]

http://www.youtube.com/watch?v=LZUbo_mNDZM

My yolk sounds like this
Is it actually a bad idea to have no dump valve (recirc or aftermarket jobbie)

[nissan_doctor]

My yolk sounds like this
Is it actually a bad idea to have no dump valve (recirc or aftermarket jobbie)

In what way?

Nissan didn't fit one to some models of 180sx from the factory.

The vast majority of people with sr's remove them with no bad effects and I know serveral people including myself who have run without one on an rb without issue for long periods of time.

[cork kouki]

In what way?

Nissan didn't fit one to some models of 180sx from the factory.

The vast majority of people with sr's remove them with no bad effects and I know serveral people including myself who have run without one on an rb without issue for long periods of time.

Oh right iv just heard from some poeple thats its supposed to be bad for the turbo dont know why
Just woundering since the standard one was taken out of my car before i got it.
But i suppose it cant be bad if nissan dont bother on sr's in some models

[PeterT]

ya i no they dont sound great but if it helps wear on the turbo. The flutter in the videos sounds shit tho. they could have bigger turbos fitted causing bigger boost pressure which will be louder. also what kind of air filter have you fitted?

that flutter sounds deadly i think! better than any chavalistic dumpvalve imo!

its got some trust mushroom jobby with a sponge element

[cork kouki]

that flutter sounds deadly i think! better than any chavalistic dumpvalve imo!

+1 dump valve = fail imo

[will_c]

i looked into this before for my old s13,gem and nissandoctor are dead right!flutter volume depends on length of ic pipework,how much boost and what kind of air filter you use.what kind of hard induction pipe your using can have an effect too with pipe lengths and shit!as for running no bov being harmful for your turbo,unless your running a turbo that produces massive airflow maybe on an engine producing circa 450bhp plus,its gonna be fine.that said,some engines have been seen to push out quite a bit more than that and no negative effects..that said it brings up the other question of the effects of a bov on lag,i never noticed any difference on mine really..but i did notice the difference in overfuelling on the overrun..which meant big flame time!

Still,id rather be going down the road sounding like a pigeon than a starlet =)

[nissan_doctor]

As above. running a high boost road car without a dump valve can cause issues like turbo stall(the much higher pressure goes back through the turbo and actually stops the blades spinning suddenly, leading to damage over time) and even issues keeping the pipes sealed.


Where it really came from was with drag racing, if your car has a gearbox/ecu which allows flat shifting then there is no need for a dump valve as there is no reduction in revs when changing up and therefor no pressure to be released.

As I said I ran my R32 without one(standard turbo) and on track or any situation where there happened to be someone driving quickly beside me it was really noticable when quick shifting as there was no lag at all when I changed up to the next gear.