A question about turbo noises.

Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
A question about turbo noises.
#1
Why is it that when a petrol turbo revs it goes bwarp chu chu chu yano that epic noise i cant make. But a diesel just whistles if we're lucky or maybe sneezes when you load it up? I know some of the vnt diesels make epic noises but not like a petrol.

Im guessing its to do with the throttle butterfly shutting?
Doesnt even own a 306.
Reply
Thanks given by:
#2
Wastegate chatter?
[Image: 00000000-0000-0000-0000-00000000014E_zpsprynorkl.jpg]
Reply
Thanks given by:
#3
Nope.

Mine chatters n chuffs n pwooshes Smile

Ill try n get a video sorted for noises
Wishes for more power...
Reply
Thanks given by:
#4
You mean compresser stall it's because pervs have a throttle body the turbo compressors the air against it and it has no where to go so it flows back and stalls the compressor wheel creating the noise. Hence why pervs have recirc/bovs
Perv 106 1.4 xs First Pug Love - Scrapped
Perv 306 1.6 5 Door Hore - Sold
110bhp 207 Hdi Sport - Used as a Brake
173bhp T25 Ph1 Diablo Dturbo - Scrapped
Thirsty Bitch Volvo 850 Estate - Sold
51bhp Berlingo Nad DT Van - Sold
Slow as f*ck Dispatch Work Horse

www.prestige-auto-care.co.uk
Reply
Thanks given by:
#5
^^ Thats bang on what i thought it was.
Doesnt even own a 306.
Reply
Thanks given by:
#6
You can make epic compressor stall noises on a diesel but compressor stall is a turbo killer.

Wastage chatter is a myth and is usually compressor stall.
Reply
Thanks given by:
#7
www.youtube.com/watch?v=6jzUFdUc8nY&feature=youtube_gdata_player
[Image: IMG_20130925_181339_zps95df48fa.jpg]
Reply
Thanks given by:
#8
If you run unfiltered onto the turbo ( silly thing to do but sounds good ) they will do it if your going along hard and put ya foot on clutch hard but don't do ya turbo much good
[Image: mike_sig_zpsd438fb98.jpg]


Reply
Thanks given by:
#9
I'll sort a video today if I can to show GT20 epic chatter
Wishes for more power...
Reply
Thanks given by:
#10
Waste gates don't make any noise at all other than when they open the engine just gets much louder...

It's the throttle plate shutting that causes that noise... It's not a good noise by any means, it's the sound of the compressor flow becoming Un stable and forcing itself ways it doesn't want to go because the compressor is spinning too slowly to support the pressure created and airflow demanded...
(16-05-2016, 10:45 AM)Toms306 Wrote: Oh I don't care about the stripped threads lol, that's easily solved by hammering the bolt in. Wink
Nanstone GTD5 GT17S - XUD9TE
Volvo V50 D5 R-Design SE Sport - Daily cruise wagon.
Reply
Thanks given by:
#11
so as I aint got a throttle plate...whats all me noises!?
Wishes for more power...
Reply
Thanks given by:
#12
As said, compressor spinning too slow for the amount of pressure produced and air demanded. This is the problem with turbos that are very efficient, they move so much air at low engine speeds and spin up so fast, that as soon as the exhaust gas flow slows, it instantly causes it to begin to surge..

The biggest problem lies when those noises happen on the throttle, that's because it's making so much air, even with the exhaust flow, there's no way it'll stay stable, so then starts making horrible noises... A lot of pressure is placed on the compressor shaft when it happens, combined with the exhaust gas spinning the turbine, it's a situation for snapping turbine shafts... It's like the compressor trying to do one thing, and the turbine doing another...
(16-05-2016, 10:45 AM)Toms306 Wrote: Oh I don't care about the stripped threads lol, that's easily solved by hammering the bolt in. Wink
Nanstone GTD5 GT17S - XUD9TE
Volvo V50 D5 R-Design SE Sport - Daily cruise wagon.
Reply
Thanks given by:
#13
sounds like I need a bigger turbo lol

its only when throttling off I get the choo choo sounds.

Just a lot of WOOOOSH when Im accelerating
Wishes for more power...
Reply
Thanks given by:
#14
sorry about the poor position of me camera...insulation taped me phone to me rear view!


Wishes for more power...
Reply
Thanks given by:
#15
Are you de-filtered piggy? Looks like that goes extremely well! Think more boost your gonna take off Wink



Reply
Thanks given by:
#16
(21-12-2013, 05:18 PM)Chris_90 Wrote: Are you de-filtered piggy? Looks like that goes extremely well! Think more boost your gonna take off Wink

Nope. Gearbox mounted turbo with about a 400mm pipe to 'cross filter mounted almost behind passenger headlamp

Only at 1.3bar...lots to go yet Big Grin
Wishes for more power...
Reply
Thanks given by:
#17
(21-12-2013, 05:37 PM)Piggy Wrote:
(21-12-2013, 05:18 PM)Chris_90 Wrote: Are you de-filtered piggy? Looks like that goes extremely well! Think more boost your gonna take off Wink

Nope. Gearbox mounted turbo with about a 400mm pipe to 'cross filter mounted almost behind passenger headlamp

Only at 1.3bar...lots to go yet Big Grin

What's that in a propa measurement? (psi) lol



Reply
Thanks given by:
#18
(21-12-2013, 06:02 PM)Chris_90 Wrote:
(21-12-2013, 05:37 PM)Piggy Wrote:
(21-12-2013, 05:18 PM)Chris_90 Wrote: Are you de-filtered piggy? Looks like that goes extremely well! Think more boost your gonna take off Wink

Nope. Gearbox mounted turbo with about a 400mm pipe to 'cross filter mounted almost behind passenger headlamp

Only at 1.3bar...lots to go yet Big Grin

What's that in a propa measurement? (psi) lol
I think 1.3 bar is like 18psi?
MG ZR TD+ - gone and easily forgotten
Fabia vRS PD130 - New daily
Astra H VXR - new toy!
Reply
Thanks given by:
#19
Around that yeah ^^

Mine actually made a choo choo noise earlier. I didnt here it the gopro did. And it wasnt even full boost just a gentle pull away into second and goes chooooo.
Doesnt even own a 306.
Reply
Thanks given by:
#20
All these choooo'ing sounds are the sounds of turbos slowly killing them self's Wink

18psi wouldn't have thought there's much more in the gt2056? Maybe 22psi



Reply
Thanks given by:
#21
My 2052 is pretty sweet at 24-26psi
Peugeot 206 GTI HDI
Volvo V50 2.0d
Volvo XC90 D5







Reply
Thanks given by:
#22
My little gt15 did it at 30+psi. Not healthy at all, but sounded class.
Reply
Thanks given by:
#23
(21-12-2013, 06:58 PM)Anton Wrote: My 2052 is pretty sweet at 24-26psi


Oooo thought they started to shit there self's over 25psi.... You had yours dynoed Anton?



Reply
Thanks given by:
#24
http://s112.photobucket.com/user/w1n_200...8.mp4.html
[Image: Untitled-1_zpsc57da38e.jpg]
Reply
Thanks given by:
#25
(21-12-2013, 07:14 PM)anto Wrote: My little gt15 did it at 30+psi. Not healthy at all, but sounded class.

Little older turbos can manage that but they aint moving any more air over 25psi....just making heat

(21-12-2013, 06:58 PM)Anton Wrote: My 2052 is pretty sweet at 24-26psi

Thats my aim...about 24psi

And do remember the GT2052 and 56 's' are both very efficient and move a lot more air at low psi that a t2 or gt15 would ever provide even at twice the psi
Wishes for more power...
Reply
Thanks given by:
#26
(21-12-2013, 07:33 PM)padge Wrote: http://s112.photobucket.com/user/w1n_200...8.mp4.html

What car/turbo was that?



Reply
Thanks given by:
#27
my old xud, T2 @ 28psi de-filter.
[Image: Untitled-1_zpsc57da38e.jpg]
Reply
Thanks given by:
#28
My old t2 made funky noises...didnt last long tho
Wishes for more power...
Reply
Thanks given by:
#29
Mine did as soon as is fitted a fmic. Wachacha when coming off boost in 4th
Reply
Thanks given by:
#30
Runs to ebay to buy a gt series


Thanks Piggy appreciate those vids mate you can really here it!
Doesnt even own a 306.
Reply
Thanks given by:


Possibly Related Threads…
Thread Author Replies Views Last Post
  Kkk turbo question Saloon306 1 1,083 10-06-2016, 02:22 AM
Last Post: bashbarnard
  Turbo question carlukepeugeot 2 1,199 03-06-2016, 10:19 PM
Last Post: carlukepeugeot
  Noises from under the bonnet knocking/rattling? Potta_91 7 2,249 29-05-2013, 01:25 PM
Last Post: doogle-d turbo

Forum Jump:


Users browsing this thread: 1 Guest(s)