Whooping turbo. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

LovetoSlide · 10-08-2012, 07:32 PM

Hi guys I recently bough an s13 hatch with an SR20DET swapped into it. Basic mods stock rebuilt turbo, HKS intake, HKS Bov, s15 side mount FMIC, and MINE's ECU. Recently after putting 600 miles on it, the turbo makes some whooping noise when spooling. It was only doing it a little but now it's spooling at like 2k-3k and makes a lot whooooop and then blows off. Was the turbo broken in or what's happening? Thanks guys.

*fliprayzin240sx* · 10-08-2012, 08:49 PM

BOV is too tight...thats compressor surge.

LovetoSlide · 10-08-2012, 09:24 PM

Am I losing power?

bkt808 · 10-08-2012, 11:03 PM

Quote:

Originally Posted by fliprayzin240sx

BOV is too tight...thats compressor surge.

i dont think its compressor surge, this is happening while the turbo is spooling not when he lets off throttle. correct?

bkt808 · 10-08-2012, 11:04 PM

you should post a vid of the sound

LovetoSlide · 10-08-2012, 11:14 PM

Yes exactly, when it's spooling. I'll upload one now.

Edit: http://www.youtube.com/watch?v=nsUNmWMVK_g

Here's the link to the video. 0:20 and 0:25 etc.

EricM · 10-08-2012, 11:24 PM

that would be the hks ssqv bov, mine always opened when letting off the throttle even at a few lbs of boost. I had a redtop with T25
Edit: I listened to it louder again and this time i can hear something else but i cant tell what it is.

LovetoSlide · 10-08-2012, 11:29 PM

Yeah, as soon as I hit boost it gives a Whoooooop~ then continues boosting. Can't seem to figure it out.

EsChassisLove · 10-09-2012, 01:32 AM

Idk man. Sounds like its angry lol.

Mine made a high pitched whining noise when the coolant seals went out. Who rebuilt the turbo?

!Zar! · 10-09-2012, 01:58 AM

Check your for a hole/leak near the turbo.

That whistle is probably the turbo sucking in, or expelling a small amount of air.

Jesse@PureTurbos · 10-10-2012, 01:20 PM

If you don't have a boost leak or other obvious problem, it's possible the turbo could be out of balance. If someone did a DIY turbo rebuild and didn't have it balanced, turbos can get really loud if it's an imbalance issue. Probably not your issue, but it's a possibility. Food for thought... Hope you get it figured out.

RalliartRsX · 10-10-2012, 01:48 PM

Quote:

Originally Posted by bkt808

i dont think its compressor surge, this is happening while the turbo is spooling not when he lets off throttle. correct?

Compressor surge can occur both DURING spoolup as well as DECEL!

pacotaco345 · 10-10-2012, 05:09 PM

I thought compressor surge can't happen until the turbo is outputting more air than the engine can take in and wastegate can get rid of.. Or slamming the throttle shut without a bov.. Anyways your turbo sounds like a slide whistle if that's the noise you're talking about. Idk what it is but if I were to guess I'd say the noise is coming from the piping pressurizing

LovetoSlide · 10-11-2012, 03:45 PM

I think it may be possible that one of the clamps around the hotpipes aren't tightened properly. I'm going to have it evaluated tomorrow. Thanks for the input guys!

GroundPerformance · 10-11-2012, 05:57 PM

Are you using aluminum turbo intake pipe? SOunds reminds me of my previous KA-T.

ATLspeed · 10-11-2012, 06:13 PM

True Compressor surge happens only while spooling. Compressor flutter is the sound you hear when you run no blow off valve or improperly adjustable bov.

Compressor surge is just the general used term

rcdad123 · 10-11-2012, 11:35 PM

sounds to me that your compressor wheel is rubbing against the compressor housing. check the compressor shaft for side to side play. remove turbo inlet pipe and grab the shaft nut and then move it side to side. if you can move it considerately, turbo needs a rebuild.

Taylor008 · 10-11-2012, 11:49 PM

Could just be some weird vacuum resonance?

LovetoSlide · 11-05-2012, 10:29 PM

Hey guys. After merely moving the intake pipe around; the noise has gone away. I think I just have a small disconnection in it. Thanks for everyone's input!

10-08-2012, 07:32 PM	#1
LovetoSlide Zilvia Member Join Date: Jul 2012 Location: Glendale Posts: 172 Trader Rating: (2) Feedback Score: 2 reviews	Whooping turbo. Hi guys I recently bough an s13 hatch with an SR20DET swapped into it. Basic mods stock rebuilt turbo, HKS intake, HKS Bov, s15 side mount FMIC, and MINE's ECU. Recently after putting 600 miles on it, the turbo makes some whooping noise when spooling. It was only doing it a little but now it's spooling at like 2k-3k and makes a lot whooooop and then blows off. Was the turbo broken in or what's happening? Thanks guys. __________________

10-08-2012, 08:49 PM	#2
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	BOV is too tight...thats compressor surge. __________________ If you think Zilvia has too many assholes... CLICK HERE!!!

10-08-2012, 09:24 PM	#3
LovetoSlide Zilvia Member Join Date: Jul 2012 Location: Glendale Posts: 172 Trader Rating: (2) Feedback Score: 2 reviews	Am I losing power? __________________

10-08-2012, 11:14 PM	#6
LovetoSlide Zilvia Member Join Date: Jul 2012 Location: Glendale Posts: 172 Trader Rating: (2) Feedback Score: 2 reviews	Yes exactly, when it's spooling. I'll upload one now. Edit: http://www.youtube.com/watch?v=nsUNmWMVK_g Here's the link to the video. 0:20 and 0:25 etc. __________________

10-08-2012, 11:29 PM	#8
LovetoSlide Zilvia Member Join Date: Jul 2012 Location: Glendale Posts: 172 Trader Rating: (2) Feedback Score: 2 reviews	Yeah, as soon as I hit boost it gives a Whoooooop~ then continues boosting. Can't seem to figure it out. __________________

10-08-2012, 11:04 PM	#5
bkt808 Zilvia Member Join Date: Feb 2010 Location: Wailuku, Maui, Hawaii Age: 36 Posts: 245 Trader Rating: (1) Feedback Score: 1 reviews	you should post a vid of the sound

10-08-2012, 11:24 PM	#7
EricM Join Date: Feb 2011 Location: St.George UT Age: 28 Posts: 8 Trader Rating: (0) Feedback Score: 0 reviews	that would be the hks ssqv bov, mine always opened when letting off the throttle even at a few lbs of boost. I had a redtop with T25 Edit: I listened to it louder again and this time i can hear something else but i cant tell what it is.

10-09-2012, 01:32 AM	#9
EsChassisLove Nissanaholic! Join Date: Jan 2011 Location: San Diego Age: 35 Posts: 2,090 Trader Rating: (26) Feedback Score: 26 reviews	Idk man. Sounds like its angry lol. Mine made a high pitched whining noise when the coolant seals went out. Who rebuilt the turbo? __________________ IG/TikTok-ThatS14_Z06guy

10-09-2012, 01:58 AM	#10
!Zar! Post Whore! Join Date: Nov 2004 Location: North Korea Posts: 14,579 Trader Rating: (27) Feedback Score: 27 reviews	Check your for a hole/leak near the turbo. That whistle is probably the turbo sucking in, or expelling a small amount of air. __________________

10-10-2012, 01:20 PM	#11
Jesse@PureTurbos Leaky Injector Join Date: Aug 2012 Location: Oceanside CA Posts: 92 Trader Rating: (0) Feedback Score: 0 reviews	If you don't have a boost leak or other obvious problem, it's possible the turbo could be out of balance. If someone did a DIY turbo rebuild and didn't have it balanced, turbos can get really loud if it's an imbalance issue. Probably not your issue, but it's a possibility. Food for thought... Hope you get it figured out. __________________ PURE TURBOS 760.721.7669

10-10-2012, 05:09 PM	#13
pacotaco345 Zilvia FREAK! Join Date: Jan 2010 Location: SoCal/Ft Worth TX Age: 30 Posts: 1,563 Trader Rating: (5) Feedback Score: 5 reviews	I thought compressor surge can't happen until the turbo is outputting more air than the engine can take in and wastegate can get rid of.. Or slamming the throttle shut without a bov.. Anyways your turbo sounds like a slide whistle if that's the noise you're talking about. Idk what it is but if I were to guess I'd say the noise is coming from the piping pressurizing __________________

10-11-2012, 03:45 PM	#14
LovetoSlide Zilvia Member Join Date: Jul 2012 Location: Glendale Posts: 172 Trader Rating: (2) Feedback Score: 2 reviews	I think it may be possible that one of the clamps around the hotpipes aren't tightened properly. I'm going to have it evaluated tomorrow. Thanks for the input guys! __________________

10-11-2012, 05:57 PM	#15
GroundPerformance Zilvia FREAK! Join Date: Oct 2008 Location: Socal Posts: 1,479 Trader Rating: (44) Feedback Score: 44 reviews	Are you using aluminum turbo intake pipe? SOunds reminds me of my previous KA-T. __________________ SoCal KA24DET/KA24ET Owners << Join the FB Group >>

10-11-2012, 06:13 PM	#16
ATLspeed Zilvia Addict Join Date: Jan 2007 Location: Eden, MD, USA Age: 37 Posts: 921 Trader Rating: (14) Rides Gallery: ATLspeed Feedback Score: 14 reviews	True Compressor surge happens only while spooling. Compressor flutter is the sound you hear when you run no blow off valve or improperly adjustable bov. Compressor surge is just the general used term __________________ 93 s13 Vert - 2jz/cd009 -- parted/sold 95 Supra Turbo

10-11-2012, 11:35 PM	#17
rcdad123 Zilvia Addict Join Date: Jul 2011 Location: san diego Posts: 639 Trader Rating: (0) Feedback Score: 0 reviews	sounds to me that your compressor wheel is rubbing against the compressor housing. check the compressor shaft for side to side play. remove turbo inlet pipe and grab the shaft nut and then move it side to side. if you can move it considerately, turbo needs a rebuild.

10-11-2012, 11:49 PM	#18
Taylor008 Leaky Injector Join Date: Feb 2008 Location: Utah Age: 32 Posts: 135 Trader Rating: (1) Feedback Score: 1 reviews	Could just be some weird vacuum resonance?

11-05-2012, 10:29 PM	#19
LovetoSlide Zilvia Member Join Date: Jul 2012 Location: Glendale Posts: 172 Trader Rating: (2) Feedback Score: 2 reviews	Hey guys. After merely moving the intake pipe around; the noise has gone away. I think I just have a small disconnection in it. Thanks for everyone's input! __________________