thegsi
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Registered: 3rd Feb 07
Location: Kidderminster Drives: Evo (you can't afford one)
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What's the best dump valve for my LET? I need to upgrade mine from standard and just need some advice. I believe to run an external wastegate, I'll need a different manifold? I'm totally open to all types of blow off valves so give me some hints! Cheers 
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Minty_Fresh
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Registered: 1st May 08
Location: westmidlands
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just no lol...
sound so much better if you just run it without nothing on it then you can hear the chatter rather then a tshhhhh that the chav boys have.....
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Iain M
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Registered: 18th Aug 05
Location: Wigan - Drives 272bhp corsa ZLET
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Chatter kills turbo's, sounds good but is deadly to a turbo.
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thegsi
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Registered: 3rd Feb 07
Location: Kidderminster Drives: Evo (you can't afford one)
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quote:
Originally posted by Iain M
Chatter kills turbo's, sounds good but is deadly to a turbo.
That was my point of this thread! I found out that its really no good for the turbo so I need to sort a dump value out.
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thegsi
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Registered: 3rd Feb 07
Location: Kidderminster Drives: Evo (you can't afford one)
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quote:
Originally posted by mk4_boy
just no lol...
sound so much better if you just run it without nothing on it then you can hear the chatter rather then a tshhhhh that the chav boys have.....
But turbos really do benefit from them. Now can anyone actually give me some advice? Come turbo boys!
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FruitBooTeR
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Registered: 18th Jan 07
Location: Wolverhampton Drives: S15
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Baily twin piston
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luke85
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Registered: 26th Nov 07
Location: Chesterfield
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Nothing wrong with the standard dump valve for protecting the turbo, there is one built into the K16.
If you want to go for a different sound like an atmospheric one the a bailys DV26 is fine
Edit to add, what are you talking about external wastegates and different manifolds? I thought this was a thread about fitting a dump valve?
[Edited on 10-10-2008 by luke85]
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Minty_Fresh
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Registered: 1st May 08
Location: westmidlands
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how does no dumpvalve kill the turbo? surely they would have a dumpvalve on as standard if it kills the turbo :S
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luke85
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Registered: 26th Nov 07
Location: Chesterfield
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They do have a dump valve on as standard and not having a dump valve at all will kill your turbo quicker. When you close the throttle without a dump valve the compressor wheel stalls and can even be forced to spin backwards
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Iain M
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Registered: 18th Aug 05
Location: Wigan - Drives 272bhp corsa ZLET
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On a turbo car, when you come of the throttle the tb closes, the noise is the air that is in a "pocket" between the now closed tb (obv a blow of valve/dump valve relases this pressure, hence the noise) , and the turbo, the back pressure forces the air back through the turbo, hence the noise not good for your turbo, but sounds 
[Edited on 10-10-2008 by Iain M]
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Minty_Fresh
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Registered: 1st May 08
Location: westmidlands
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fair enough, learn something new everyday
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craig_s
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Registered: 5th Mar 06
Location: Birmingham Drives: mk4 astra gsi
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ive got a bailey dv26 twin piston one on mine,sound's ok,i would like to hear the difference between mine and a trumpet type one though.
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luke85
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Registered: 26th Nov 07
Location: Chesterfield
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Recirculating one sounds best IMO, had a DV26 on and it annoyed me after a few weeks
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andyc1234
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Registered: 7th Nov 06
Location: Lancashire
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i got a bailey twin piston one. never heard it go ptssssch yet though  still need to fit the engine.
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thegsi
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Registered: 3rd Feb 07
Location: Kidderminster Drives: Evo (you can't afford one)
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quote:
Originally posted by luke85
Nothing wrong with the standard dump valve for protecting the turbo, there is one built into the K16.
If you want to go for a different sound like an atmospheric one the a bailys DV26 is fine
Edit to add, what are you talking about external wastegates and different manifolds? I thought this was a thread about fitting a dump valve?
[Edited on 10-10-2008 by luke85]
If you read the heading, it says wastegate too. The thread is generally about how i can dump turbo air. Whether it be from a dump valve or wastegate. To those of you who have helped, thanks a lot. I would like more of a whistle high pitch sound psssh than a normal dump valve pssshh! If that makes any sense! How can i achieve that do you think?
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luke85
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Registered: 26th Nov 07
Location: Chesterfield
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I get what your saying but you cant dump "turbo air" with a wastegate, the wastegate sits in the exhaust.
But yes if you want to run an external wastegate you will need a new manifold and a new turbo, assuming you still have the standard k16 one fitted 
[Edited on 10-10-2008 by luke85]
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Corsa_Scotty
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Registered: 8th Aug 07
Location: Scottish Borders
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Bailey's DV26
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craig_s
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Registered: 5th Mar 06
Location: Birmingham Drives: mk4 astra gsi
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my dv26 makes quite a high pitch noise,as luke said a waste gate let's exhaust gasses by pass the turbo to control turbo speed/boost pressure.
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thegsi
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Registered: 3rd Feb 07
Location: Kidderminster Drives: Evo (you can't afford one)
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quote:
Originally posted by craig_s
my dv26 makes quite a high pitch noise,as luke said a waste gate let's exhaust gasses by pass the turbo to control turbo speed/boost pressure.
Oh right OK I understand. New to turbo's so I think I'm getting confused! Cheers lads for your help.
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thegsi
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Registered: 3rd Feb 07
Location: Kidderminster Drives: Evo (you can't afford one)
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Also, do I need to buy a blanking kit for the standard dump valve?
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andyc1234
Member
Registered: 7th Nov 06
Location: Lancashire
User status: Offline
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no just pull the vac pipe of it so it stays closed all the time
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