View Full Version : Wastegate chatter
Scotty_b
02-09-2004, 07:54
I want to here my waste gate chatter like a good en! i have a quick shift induction kit, a baily re-circ DV and she is going to be revoved.
Any ideas on how to get this noise louder?? my mates cupra bezzer makes a little chatter every so often and he has just got a turbo smart DV.
Another mate has a fiesta RS turbo and he put a filter on and the noise the waste gate mad was emense!
Please jim could you fix it for me!!!! :roflmao: :thumbup:
Ruddmeister
02-09-2004, 08:02
Thought I read in EVO this month (or last) that Wastegate Chatter doesn't actually exist. That the sounds from turbo cars can often be the turbo stalling which is not good. I'll try and find the article......
What have you done with the cold air intake on the induction kit? problem is kits like the AEM CAI that are quite loud don't fit the LCR.
ibizacupra
02-09-2004, 08:42
chatter/flutter sound is not a healthy thing for your turbo.... (unless its built for it WRC styleee - ker-ching$$$)
Compressor stall and watsegate flutter... Just disconnect your DV vacuum pipe... (joking btw!!) and you will get it. - NOT ADVISED. BAD for Turbo
slim_boy_fat
02-09-2004, 09:06
Are you thinking of an atmospheric DV?
Ruddmeister
02-09-2004, 09:31
Scotty
Is this the sound you want (Clip #15) ??????
http://www.20v-turbo.co.uk/media.html
That's a Golf I assume remapped with a AEM type CAI and DV.
I think the remap will give you more sound and playing around with the cold air feed / induction will also help.
If you want a Scooby style Blow off valve..................well it's your car
http://www.seatcupra.net/forums/showthread.php?t=31563
to get the sound you are after you need to get an uprated actuator ie group a spec .correct me if im wrong but i think forge do one....
Scotty_b
02-09-2004, 12:21
Yeah ive seen the forge one, the only difference i now about is that the ford has an external wastegate????
Ap_coupe
02-09-2004, 16:13
How does a external wastegate work? Cau u have 1 on the mk3 cupra. And are there any real reason 2 have an externall wastegate
slim_boy_fat
02-09-2004, 16:20
How does a external wastegate work? Cau u have 1 on the mk3 cupra. And are there any real reason 2 have an externall wastegate
Probably just frees up space around the turbo.
External wastegates are surprisingl big BTW.
Scotty_b
02-09-2004, 17:58
i wasnt sure if that was the reson why it made the noise, but it was the only difference spec wise i new of the engine
CupraR-Rog
03-09-2004, 09:56
You WANT to hear waste gate chatter??
WHY do you Want to KILL your Turbo??
It's not like they're penny items to replace!!
Scotty_b
03-09-2004, 12:07
How is waste gate cahtter gona kill the turbo? maybe im not talking about the rite thing, im after the noise it makes that goes like DDDDDDDIIIIIIIRRRRRRRRRRLLLLLLL. !!!
cuprabaz
09-09-2004, 15:40
buy a pulsar, if you fit a certain dv to them they make this noise!
Sounds like a Hks ssq with added chirping chattery noise!! :confused:
Or you could just go and watch a rally and listen to all the wastegates chirping and be happy with that!! ;)
Scotty_b
10-09-2004, 08:35
buy a pulsar, if you fit a certain dv to them they make this noise!
Sounds like a Hks ssq with added chirping chattery noise!! :confused:
Or you could just go and watch a rally and listen to all the wastegates chirping and be happy with that!! ;)
No i want min eto make this noise!!!!!
I could do but i odnt like nissan micras!!!!!!!!!
CupraR-Rog
10-09-2004, 17:06
Then remove your DV, and bung up all the tubes.
While you're at it, get a price for a new turbo, as yours really won't last long!!
Ap_coupe
13-09-2004, 11:54
Could someone explain why does a rally car use the wastegate so much? Why is it not doing damage to there turbo?
Ruddmeister
13-09-2004, 12:14
Could someone explain why does a rally car use the wastegate so much? Why is it not doing damage to there turbo?
AFAIK the chirp is the turbo stalling and it is a problem for the WRC cars, it has a 360 degree bearing to help with this and the turbo is changed and/or refurbished per rally if not sooner, the road going turbo has a longer life span....we hope.
Does anyone know if they still fit anti-lag systems to WRC cars and does this help or hinder??
ibizacupra
13-09-2004, 13:40
Could someone explain why does a rally car use the wastegate so much? Why is it not doing damage to there turbo?
Do you think WRC cars, running antilag run turbos like our cars?
I think you know the answer to that...
Special, very tough materials (ker ching$$) in theirs and they still bin them at the end of an event and during events cos they dont last.
You need to get an external waste gate from an audi S2 / Urs4 / Urs6 / or Ur quattro RR 20v.
Then you need to have it venting down its own pipe instead of through the exhaust system to get maximum noise.
Then unhook your BOV / DV to make the WG bounce and smile, for around 30 miles untill you pull a turbine blade into cylinder 1, that then snaps a valve which ends up through your number 1 piston.
Then call the AA / RAC and wait an hour in the rain.
When you finally get the car home and spend big money and time fixing it, act realy smart trying to convince everyone it was worth it.
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Waste gate chatter / turbo stall. What ever you want to call it , its certainly not a good noise to have on your daily driver.
Now if your running standalone and can tune things to the n th degree then there might be some advantages to it. But buy a much better trubo first
acidstrato
23-01-2007, 17:08
newbie certainly dredged this from the lake
oh sorry do i need permission to reply to old posts. I will ask next time.
I too am going to drag this up from the past.
My friend has a Volvo S40, we fitted a halfords peice of crap induction kit for a laugh and the wast gate sound it makes is cool.
I assume it was a waste gate, it may be a recirc valve making a weird noise, but its not the standard "Pssshhh" of a DV/RDV. Its like a chirp, or a double or even triple "Tchss" almost, I am sure you all know this noise anyway. When I went to the roaling road in oxford, some1 with a MK3 had it then, and it sounded awesome.
Who were you, tell me your secrect!! :)
something else, you can hear a bit of "Chatter" in my friends totally standard gold GTi. Which has the same engine. So why is it bad for our turbos, if my two friends cars do it without messing around with the cars?
Thanks chaps.
cuprabaz
19-06-2008, 18:40
Both their dv's are shagged??
hehe, perhaps you are correct. haha
no idea. I switched over some pipes as they were perishing.
Anyway when i drove to get the mrs later, it was making a fair amount of chatter, sounded cool, but i obviously know now this is very bad, so pulled over and it was a split in the hose coming off the top of the dump valve (the smallest one).
My question is, what does this particular tube do? What when this was unplugged did it chatter? does this open and close the valve or something? Im just trying to get an idea of what does what in relation to boost and VAC hoses.
thanks
Focus RS with DV removed and blanked off:
http://www.youtube.com/watch?v=RsO1HpDVwWs
Trying to force boost pressure back through your turbo = dead turbo very quickly.
Yes Rob, that was the noise, My car started doing it so pulled over straight away, and it was the little pipe coming off the top of the DV.
I had no idea that it was a bad thing untill reading it on here, im just glad I did read it, otherwise I wouldnt have known to pull over.
Pipe is replaced now.
Its kinda a shame though, coz i think it sounds kinda cool compared with standard "Pssh" lol
DaNnY_LaD
06-07-2008, 22:42
turbo Chatter is bad...My mates got a high spec Fezza RST and he put a wooden broom stick handle were the dv should go..
The chatter is seariously loud and but does sound awesome
a fly by off my mates rst
http://s122.photobucket.com/albums/o265/ShanSnaps/?action=view¤t=DSCF3231.flv
dave-20vt
07-07-2008, 19:33
lol at that last reply :)
just reading this old post, my car makes some sort of chatter running the forge dumpvalve, ive had it checked and its 100% working fine and ive had it for nearly a year with no problems, would'nt mind it a bit louder haha
I ran my CT9 turbo on my Glanzav for a year without a DV and there was absolutely no shaft play - loads of compressor surge when lifting off (as there's nothing to dump the air to atmosphere)
It will damage the bearings eventually but in my case running 16psi on the turbo for a year like that never did anything! Maybe I was just lucky eh? 'll let you guys decide.
ChrisGunn11
04-03-2010, 22:05
Hey all!
I'm new to owning a Cupra and was also interested in the chatter noise untill reading all these posts, just wanted to say thanks for potentially saving my turbo!
have learned a lot.
Cheers Guys
Chris
TubbyTwo
12-03-2010, 16:20
there is no such thing as wastegate chatter. Wastegates are either open or closed.
The chattering your talking about is called compressor surge or compressor/turbo stall.
This happens when boost is produced when the accelerator pedal is pressed, when you lift off the throttle the intake throttle body closes the flap. Usually at this point the excess boost is either vented to atmos via a BOV or its recirced back into the system before the turbo. When your hearing the "chattering noise its air being forced back through the turbine blades the wrong way causing it to slow (stall).
this can put strain on the turbine itself and the shaft and isn't generally recommended if you want a decent lifespan from the turbines.
Alot of jap cars make this noise (my previous MR2 turbo included), usually its down to the type of BOV used many of them are sequential 2 stage ones that under medium to full boost if will make this chattering noise.
There is no reason you cant go out and fit a HKS SSQV or Apexi BOV to any car and get the same results.
TubbyTwo
12-03-2010, 16:25
I ran my CT9 turbo on my Glanzav for a year without a DV and there was absolutely no shaft play - loads of compressor surge when lifting off (as there's nothing to dump the air to atmosphere)
It will damage the bearings eventually but in my case running 16psi on the turbo for a year like that never did anything! Maybe I was just lucky eh? 'll let you guys decide.
a lot of it depends on the turbo as well i think. 90% of Japanese import turbo cars will come with ceramic turbos so there is a lot of potential worry about putting excess stress on them.
like antilag, chuffing awesome to hear and look at, not so great for the turbo!
the way i look at it is i want the modifications i do to the car to have the largest but safest possible performance gains.
Removing an item that serves a purpose like a BOV to force the car to make this noise in my books isn't a great idea. ITs there for a reason.
unless your a rally team of course and can change the turbo after each stage lol
a lot of jap cars run no blow off at all. if you look over at drifting forums, 200sx forums etc they think that turbo chatter being bad is nothing more than a myth.