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Author baarrrppppp... tistt.... baaarrrrrpppppppp tisst...
Batmanman
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Registered: 19th Jun 07
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17th Aug 07 at 15:38   View User's Profile U2U Member Reply With Quote
what makes the "tisst" noise on cars? sorry if i sound like a bit of a n00b do infact know nob all about cars

i love the sound, and want my car to make it.. is it expensive/hard to do? or... doable at all.. i have a 1.2 corsa B, i realise i will look like a twat with my car making that noise when it is slow as poo, but.. what ya gunna do?

Any help would be greatly appreciated
Steve
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Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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17th Aug 07 at 15:39   View Garage View User's Profile U2U Member Reply With Quote
dump valve, you need a turbo
Bram
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Registered: 25th Mar 02
Location: Derby
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17th Aug 07 at 15:39   View User's Profile U2U Member Reply With Quote
Joff?
Superlite Ltd.
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Registered: 9th Jan 07
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17th Aug 07 at 15:39   View User's Profile U2U Member Reply With Quote
You need a turbo.

The sounds is made by boosted air being dumped. Your engine has no boosted air im afraid.
Daimo B
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Registered: 20th Mar 00
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17th Aug 07 at 15:39   View User's Profile U2U Member Reply With Quote
Dump valves do the tissshhhhh
Actuators do the "diddlydiddlydoooooo"
Blow off valves (BOV) sound like the world is getting a gale force wind.
mattk
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Registered: 27th Feb 06
Location: St. Helens
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17th Aug 07 at 15:39   View User's Profile U2U Member Reply With Quote
called a dump valve, only on turbo cars (unless you get a fake one )

some one will elabourate on what they do, im unsure
Prowler
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Registered: 26th Jan 06
Location: Scotland,Paisley
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17th Aug 07 at 15:39   View User's Profile U2U Member Reply With Quote
its a dumpvalve that relese pressure off a turbo
Superlite Ltd.
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17th Aug 07 at 15:40   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Prowler
its a dumpvalve that relese pressure off a turbo


Batmanman
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Registered: 19th Jun 07
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17th Aug 07 at 15:42   View User's Profile U2U Member Reply With Quote
aww... damn my lack of turbo... anyone wanna turbo my car for free?

A fake one you say?.. nahh... that's slightly TOO boy racerish for me i think.. *secretly contemplates it*

Cheers ya'll
Kurt
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Registered: 23rd Oct 05
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17th Aug 07 at 15:44   View User's Profile U2U Member Reply With Quote
do dumpvalves release the air between the inlet valves and the turbo to stop backspin (spooling)?
Batmanman
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17th Aug 07 at 15:44   View User's Profile U2U Member Reply With Quote
oh my... a fake dump valve is just a big speaker, oui? that's pretty terrible... *stops contemplating it*
Superlite Ltd.
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17th Aug 07 at 15:44   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by VXR
Dump valves do the tissshhhhh
Actuators do the "diddlydiddlydoooooo"
Blow off valves (BOV) sound like the world is getting a gale force wind.


DV and BOV is the same thing mate

wategate is different mind
Superlite Ltd.
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17th Aug 07 at 15:45   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Kurt
do dumpvalves release the air between the inlet valves and the turbo to stop backspin (spooling)?


between the throttle plate and the turbo mate
Kurt
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Registered: 23rd Oct 05
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17th Aug 07 at 15:46   View User's Profile U2U Member Reply With Quote
yeah thats what i meant
Steve
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Registered: 30th Mar 02
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17th Aug 07 at 15:47   View Garage View User's Profile U2U Member Reply With Quote
stop turbo stall yes, which is why i find it funny when people block off there dump valve pipes and think the pigeon sound of air coming back out the wastegate is a good thing
Daimo B
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Registered: 20th Mar 00
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17th Aug 07 at 15:48   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Superlite Ltd.
quote:
Originally posted by VXR
Dump valves do the tissshhhhh
Actuators do the "diddlydiddlydoooooo"
Blow off valves (BOV) sound like the world is getting a gale force wind.


DV and BOV is the same thing mate

wategate is different mind


Im doing the noises.... BOV has a different sound to it.
Kurt
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17th Aug 07 at 15:49   View User's Profile U2U Member Reply With Quote
whats a wastegate then?
Daimo B
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17th Aug 07 at 15:51   View User's Profile U2U Member Reply With Quote
Someone just link some youtube stuff. So much easier
Superlite Ltd.
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17th Aug 07 at 15:51   View User's Profile U2U Member Reply With Quote
wastegate dumps exhaust gases so they dont go through the turbo.

[Edited on 17-08-2007 by Superlite Ltd.]
Steve
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Registered: 30th Mar 02
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17th Aug 07 at 15:52   View Garage View User's Profile U2U Member Reply With Quote
it regulates how much pressure the turbo is beinig given, opens up when to much pressure is being forced through it
Steve
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Registered: 30th Mar 02
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17th Aug 07 at 15:53   View Garage View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Superlite Ltd.
wastegate dumps exhaust gases so they dont go through the turbo.

[Edited on 17-08-2007 by Superlite Ltd.]


exhaust gases have to go through the turbo thats what drives it to spool up, however it dump excess exhaust gases when the pressure gets too much
Superlite Ltd.
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17th Aug 07 at 15:53   View User's Profile U2U Member Reply With Quote
Most turbos will have a wastegate inside them. Some need an external wastegate...these are the ones that make a really loud noise. Even more so if you add a screamer pipe. Guess what sound they make
Vaux Lad
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Registered: 15th Dec 04
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17th Aug 07 at 15:54   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Kurt
whats a wastegate then?

Exactly what it says.
Its a gate that "wastes" exhaust gases by letting them bypass the turbine wheel.

An actuator makes no noise, it just has a arm that is forced to move by boost pressure, which then opens the wastegate.

Im not a big fan of DV Tiiishh,, compressor stall sounds much cooler

[Edited on 17-08-2007 by Vaux Lad]
Kurt
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17th Aug 07 at 15:56   View User's Profile U2U Member Reply With Quote
i love threads like this, you learn loads, so how do twin turbos work? is it just a turbo feeding a turbo?
Ste L
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Registered: 3rd Jul 06
Location: Manchester Drives: 106 16v Rallye
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17th Aug 07 at 15:56   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Vaux Lad

Im not a big fan of DV Tiiishh,, compressor stall sounds much cooler


but causes more damnage..

rather have a re-cirulating dv

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