Hamish
Member
Registered: 4th Apr 05
Location: Ashtead, Surrey Drives: 100bhp Mint with Hole
User status: Offline
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quote:
Originally posted by scottyp1989
http://cgi.ebay.co.uk/SAXO-CORSA-ASTRA-GOLF-ANY-EXHAUST-TURBO-SOUND-WHISTLE_W0QQitemZ320152081112QQihZ011QQcategoryZ9895QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
thats what the whistle is if you havent got a turbo. my mates got one on his vr6 an my other mate on his astra and they dont sound bad
excuss me while i point and laugh and you and your mates 
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Ben ev
Member
Registered: 23rd Oct 05
Location: kingslynn / torquay
User status: Offline
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you'l find alot of wasted charge pressure will exit the compressor housing through the intake without a blowoff valve hense the wheel stalling
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Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
User status: Offline
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quote:
Originally posted by Ben ev
you'l find alot of wasted charge pressure will exit the compressor housing through the intake without a blowoff valve hense the wheel stalling
yes exactly
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Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
User status: Offline
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quote:
Originally posted by Superlite Ltd.
quote:
Originally posted by Steve
quote:
Originally posted by Superlite Ltd.
wastegates and dump valves are not dumping the same pressue steve
You can have both fitted to your car
[Edited on 30-08-2007 by Superlite Ltd.]
yes i know, people force more pressure back through the turbo out the wastegate though by sealing off there dump valve
[Edited on 30-08-2007 by Steve]
Oh! 
Why the hell do people do that
[Edited on 30-08-2007 by Superlite Ltd.]
because apparently it sounds good
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Ben ev
Member
Registered: 23rd Oct 05
Location: kingslynn / torquay
User status: Offline
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quote:
Originally posted by Steve
quote:
Originally posted by Ben ev
you'l find alot of wasted charge pressure will exit the compressor housing through the intake without a blowoff valve hense the wheel stalling
yes exactly
no exactly. your saying it all exits through the wg
you wont get charge pressure going through the exhaust housing.
[Edited on 30-08-2007 by Ben ev]
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jr
Member
Registered: 20th May 02
Location: Kent
User status: Offline
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quote:
Originally posted by P1CK4D
Why would spinning too fast be a bad thing? Wouldn't it just make you go faster? I actually do enjoy learning new things
spinning faster = more boost = could be bad
[Edited on 30-08-2007 by jr]
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Nic Barnes
Member
Registered: 5th Apr 04
Location: nowhere near ginger people
User status: Offline
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quote:
Originally posted by Steve
quote:
Originally posted by Superlite Ltd.
quote:
Originally posted by Steve
if your achieveing this by blocking off the dump valve, you cause the turbo to stall
What the fuck has fitting an external wastegate and screamer pipe got to do with blocking off the dump valve?
well if you dont seal off the dump valve pressure will be lost through that route
screamer pipe has nothing to do with dump valve, or technically the external waste gate, can be on internal waste gate aswell. all that it does, is as turbo reaches pre set boost level wastegate opens, now either its back into exhaust system like normal, or, to atmosphere making screaming noise. it has no relevance to dump valve. infact that stutter noise is fuck all to do with screamer pipe anyway. i have screamer pipe, and dump valve, they dont work at the same time for obvious reasons
also regarding the illegal part. it only opens when engine is on desired boost, so, as far as mot test goes, there will be no gasses coming out from it, hence it not being able to fail on it.
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Damian_666
Member
Registered: 28th Sep 06
Location: essex: Drives: Mitsubishi Evo 2 RS
User status: Offline
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quote:
Originally posted by P1CK4D
quote:
Originally posted by fro-dizzle
How comes its illegal?
When I went to a Jap night a Ace Cafe I believe a Supra had one. Flames coming out from both the exhaust and under neath the engine, turbo area! Now that was Loud! Could be a reason...
this is the ace cafe night with the supra! 
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Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
User status: Offline
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what happens if you scream down a screamer pipe?
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Robin
Premium Member
Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
User status: Offline
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you look like a tool
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Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
User status: Offline
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anything else?
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Robin
Premium Member
Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
User status: Offline
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Bit of soot round your mouth
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Mattb
Member
Registered: 2nd Feb 03
Location: Under your sisters bed
User status: Offline
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quote:
Originally posted by Steve
quote:
Originally posted by Superlite Ltd.
quote:
Originally posted by Steve
quote:
Originally posted by Superlite Ltd.
wastegates and dump valves are not dumping the same pressue steve
You can have both fitted to your car
[Edited on 30-08-2007 by Superlite Ltd.]
yes i know, people force more pressure back through the turbo out the wastegate though by sealing off there dump valve
[Edited on 30-08-2007 by Steve]
Oh!
Why the hell do people do that
[Edited on 30-08-2007 by Superlite Ltd.]
because apparently it sounds good
Sounds like you are talking about compressor stall. The wastegate in on the other side of the turbo.
From what i recall 'wastegate chatter' is a completely different thing to compressor stall. Wastegate chatter is caused mainly on cars running lots of boost with a weak wastegate actuator that cant keep the wastegate closed under full boost but is still strong enough to prevent wastegate creep. The sound is the wastegate 'penny' opening then closing very quickly
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Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
User status: Offline
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compressor stall can cause wastegate chatter, for the very reasons you point out.
close off the dv, and the actuator wont able to cope with the pressure being forced back through the turbo
[Edited on 30-08-2007 by Steve]
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SportBoy
Member
Registered: 5th Oct 01
Location: Retford, Nottinghamshire
User status: Offline
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Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
User status: Offline
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do you want a fight? lips off
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Welsh Dan
Member
Registered: 23rd Mar 00
User status: Offline
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I had one on my RX7 single turbo. It sounded the bollocks, apart from it was a bit loud as it exited underneath the drivers feet 
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SportBoy
Member
Registered: 5th Oct 01
Location: Retford, Nottinghamshire
User status: Offline
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*chinese voice* ahhh you wanna fight ... fight me
[Edited on 30-08-2007 by SportyBoy]
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cunningham
Member
Registered: 25th May 05
Location: Lochore, Fife
User status: Offline
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is the chatter your on about the noise the rally prep turbo cars make? or am i thinking of something else?
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scottyp1989
Member
Registered: 29th Jul 07
Location: Warley, West Midlands
User status: Offline
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quote:
Originally posted by Hamish
quote:
Originally posted by scottyp1989
http://cgi.ebay.co.uk/SAXO-CORSA-ASTRA-GOLF-ANY-EXHAUST-TURBO-SOUND-WHISTLE_W0QQitemZ320152081112QQihZ011QQcategoryZ9895QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
thats what the whistle is if you havent got a turbo. my mates got one on his vr6 an my other mate on his astra and they dont sound bad
lol i havent got one an never would just a couple of people that i now have them. the vr6 dosent sound bad but really its just a chavvy piece of shit to make your car sound like a turbo an one would never go anywhere near my car just dont see the point of them.
excuss me while i point and laugh and you and your mates
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Ben ev
Member
Registered: 23rd Oct 05
Location: kingslynn / torquay
User status: Offline
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quote:
Originally posted by Steve
compressor stall can cause wastegate chatter, for the very reasons you point out.
close off the dv, and the actuator wont able to cope with the pressure being forced back through the turbo
[Edited on 30-08-2007 by Steve]
its not the pressure that goes out steve, understand.
its the exhaust gases taking the easy way out. charge pressure aint gona go through the turbine wheel. how do you think it gets there? back to the turbo through the compressor oil seal through the shaft housing through the turbine oil seal and then forces itself out the gate? er no
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taylorboosh
Member
Registered: 3rd Apr 07
User status: Offline
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my corsa is louder than that
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P1CK4D
Member
Registered: 19th Jun 06
Location: Around Essex Somewhere
User status: Offline
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A dump valve is recommend by you lot then? Most of the ford people I know, prefer not to run a dump valve as they can sometimes go wrong and have the air filter chattering instead.
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Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
User status: Offline
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no run a dv or recirc, the ford people do it because it sounds cool, and the chatter doesnt come out the airbox lol.
like i said earlier doing this adds strain on the turbo and means it loses momentum when it stalls thus affecting its performance
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P1CK4D
Member
Registered: 19th Jun 06
Location: Around Essex Somewhere
User status: Offline
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quote:
Originally posted by Steve
and the chatter doesnt come out the airbox lol.
Where does the "chatter" come from then. As this is what ive been told.
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