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Viewing Topic: Dumpvalve noise?

#90443
PostSat Sep 27, 2008 5:02 pm
ben_harmer32
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Location:Horsham, West Sussex
Drives: 1995 Toyota Celica GT4
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Fitted an HKS replica one to my car today. It makes a noise but not what i expected, it sort of chatters rather than the traditional Psssssst! Is this ok? Cheers! Thumbs Up!


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#90444
PostSat Sep 27, 2008 5:24 pm
rhamps
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yeh they sound cool if it sounds like i think it does
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#90446
PostSat Sep 27, 2008 5:46 pm
ben_harmer32
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Yeah it does sound good. it's not messing up my turbo then?


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#90447
PostSat Sep 27, 2008 5:48 pm
rhamps
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well it might be that the spring is too weak but im not sure without seeing it or hearing it
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#90448
PostSat Sep 27, 2008 5:53 pm
ben_harmer32
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Bit like this

http://www.youtube.com/watch?v=Hmvi2rMS6JM



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#90449
PostSat Sep 27, 2008 6:08 pm
Andy_Boy
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thats waste gate chatter because the dump valves not working which is making the turbo stop suddenly which is not good for it!
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#90450
PostSat Sep 27, 2008 6:10 pm
rhamps
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no that isnt good for it. STOP dont kill your poor turbo. The real HKS ones are expensive but they do work really well.
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#90451
PostSat Sep 27, 2008 6:13 pm
Administrator AdamR
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if your turbo has steel blades, it wont cause much of a problem, you're basically stalling the wheels. If you have ceramic blades then it wont last too long, although it'll depend on what boost you're running etc.


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#90452
PostSat Sep 27, 2008 6:14 pm
SCOOBYDOO
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never heard that noise from one before ? they either woosh or like the hks they whistle (like noise on fast furious films) . yours sounds like wastegate chatter after an induction kit has been fitted ! those cheap copy ones have been known to mess up turbos and not last long as ive read on scooby/skyline forums ! i would get rid of it asap before you do damage
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#90453
PostSat Sep 27, 2008 6:30 pm
rhamps
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sorry about the bad news mate here is something to chear you up Boobies
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#90455
PostSat Sep 27, 2008 6:35 pm
ben_harmer32
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Drives: 1995 Toyota Celica GT4
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rhamps wrote:
sorry about the bad news mate here is something to chear you up Boobies


Thanks for that Laughing

It's now been removed from the car. Back to standard until i can afford a proper one. Cheers peeps


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#90457
PostSat Sep 27, 2008 6:47 pm
andybob
Location:Lymington
Drives:r33 gtst
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thats turbo stall your hearing if you dont have an external wastegate which it not good at at sounds great tho you'll hear it on most s13's with induction kits

eventually the blades will grind fine filings from the outer wall which slowly end up in the the block sawing away at your bigends etc(s13's are notorious for chocolate bearings this is why) so either get a recirc adaptor or clean the sump once a month
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#90460
PostSat Sep 27, 2008 6:55 pm
andybob
Location:Lymington
Drives:r33 gtst
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ben_harmer32 wrote:
rhamps wrote:
sorry about the bad news mate here is something to chear you up Boobies


Thanks for that Laughing

It's now been removed from the car. Back to standard until i can afford a proper one. Cheers peeps


the price of the bov wont change the fact its stalling just tighten the spring with the 10mm bolt on the back of the bov you got to make it shut faster i run a hks fake and have no problem it shuts just as fast as the real thing only difference is that its not set up for any specific car unlike the hks one which the load is already set
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#90461
PostSat Sep 27, 2008 6:55 pm
RedRummy
Location:Hove
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it sounds like its not dumping properly... can you get a good pssshhhht as well as the chatter?

Mine makes a similar sound, but only if i lift off at about half boost.

If you hit full boost and lift off you should get a proper whoosh noise no?
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#90462
PostSat Sep 27, 2008 6:58 pm
ben_harmer32
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Location:Horsham, West Sussex
Drives: 1995 Toyota Celica GT4
Joined:21 Sep 2006
Posts:523

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It chattered all the time. and the bolt on the back is done up as far as it goes


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