Could this be a bad turbo? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Psycho 240 Freak · 07-07-2008, 10:29 PM

HKS GT2530 on a S13 SR20 @ 17 psi

Symptoms:
1. Makes a grinding like sound from the turbo when I hit full throttle
2. Does not build boost but I didn't keep my foot on the gas for too long either
3. Blue smoke came from around the turbine and turbo elbow area, once that I noticed
4. After hitting full throttle for about a second and the rpms drop back down, the turbo would make a grinding noise for about a second
5. Rattling noise coming from the turbo during idle and normal driving

Things I've already checked:
1. Turbo is not loose from the manifold or elbow
2. All hoses are secure and tighten
3. Shaft play about 1 to 2 mm
4. Turbo spins freely

Anything else I should check? So do you guys think the turbo's done? I need to be sure before I go out and get a new one.

Clowny · 07-07-2008, 10:35 PM

is the shaft play side to side, front to back, or both?

SexPanda · 07-07-2008, 10:39 PM

thats alot of shaft play man...

sr20boostn20 · 07-07-2008, 10:52 PM

that turbo is shot,

if there really is 1 to 2 mm of shaft play it is defiantly done past the point of a rebuild probably.

shaft play should be in the .05 of a mm .

SoguRacing · 07-07-2008, 10:54 PM

turbo needs rebuild. though, check to see if the turbine has hit the inside of the outlet

Psycho 240 Freak · 07-07-2008, 11:27 PM

Quote:

Originally Posted by Clowny

is the shaft play side to side, front to back, or both?

It's side to side. I should've checked front to back to but didn't. I'll do that tomorrow.

Sileighty_85 · 07-08-2008, 05:20 AM

Quote:

Originally Posted by Psycho 240 Freak

It's side to side. I should've checked front to back to but didn't. I'll do that tomorrow.

Dont Bother Its toast, Rebuild it

jsasrsr · 07-08-2008, 05:34 AM

trash it... you can try to send it to blaast and get it rebuilt, but holy crap 1 to 2mm, its probably finished with its useful life...

shmiddy · 07-08-2008, 05:56 AM

check for oil down the exhauhst pipe, also see if any of the fins are cracked.. my sr stck turbo was shitted and those were some signs that i saw

Addicted2Kouki · 07-08-2008, 02:01 PM

This is like a 200 lb boulder falling on your arm and you look at your arm and see your bone sticking out and asking us if its broken.

Either way, just get it rebuilt.
Slap on a t25 if you need to get around.

07-07-2008, 10:29 PM	#1
Psycho 240 Freak Zilvia Member Join Date: May 2006 Location: Northern California Posts: 227 Trader Rating: (0) Feedback Score: 0 reviews	Could this be a bad turbo? HKS GT2530 on a S13 SR20 @ 17 psi Symptoms: 1. Makes a grinding like sound from the turbo when I hit full throttle 2. Does not build boost but I didn't keep my foot on the gas for too long either 3. Blue smoke came from around the turbine and turbo elbow area, once that I noticed 4. After hitting full throttle for about a second and the rpms drop back down, the turbo would make a grinding noise for about a second 5. Rattling noise coming from the turbo during idle and normal driving Things I've already checked: 1. Turbo is not loose from the manifold or elbow 2. All hoses are secure and tighten 3. Shaft play about 1 to 2 mm 4. Turbo spins freely Anything else I should check? So do you guys think the turbo's done? I need to be sure before I go out and get a new one.

07-07-2008, 10:39 PM	#3
SexPanda Post Whore! Join Date: Jun 2007 Location: Where ever there is free beer Posts: 3,239 Trader Rating: (0) Feedback Score: 0 reviews	thats alot of shaft play man... __________________ BRAND NEW GReddy PRofec E-01 EBC for sale, Cheap!

07-07-2008, 10:54 PM	#5
SoguRacing Post Whore! Join Date: Nov 2007 Location: (714) Age: 38 Posts: 2,967 Trader Rating: (23) Rides Gallery: SoguRacing Feedback Score: 23 reviews	turbo needs rebuild. though, check to see if the turbine has hit the inside of the outlet __________________ Pre Tune Checkup! Compression,LeakDown,Vacuum Test $80. Cams Install: $180

07-08-2008, 05:56 AM	#9
shmiddy Zilvia FREAK! Join Date: Nov 2007 Location: nyc Age: 38 Posts: 1,279 Trader Rating: (2) Feedback Score: 2 reviews	check for oil down the exhauhst pipe, also see if any of the fins are cracked.. my sr stck turbo was shitted and those were some signs that i saw __________________ i fully de-volved

07-07-2008, 10:35 PM	#2
Clowny Leaky Injector Join Date: Nov 2006 Location: STL Age: 39 Posts: 56 Trader Rating: (0) Feedback Score: 0 reviews	is the shaft play side to side, front to back, or both?

07-07-2008, 10:52 PM	#4
sr20boostn20 Zilvia Junkie Join Date: Nov 2006 Location: Lake Tahoe, CA/ LI NY Age: 37 Posts: 425 Trader Rating: (1) Feedback Score: 1 reviews	that turbo is shot, if there really is 1 to 2 mm of shaft play it is defiantly done past the point of a rebuild probably. shaft play should be in the .05 of a mm .

07-08-2008, 05:34 AM	#8
jsasrsr Zilvia Junkie Join Date: Feb 2008 Location: Stationed in...Germany Age: 34 Posts: 419 Trader Rating: (6) Feedback Score: 6 reviews	trash it... you can try to send it to blaast and get it rebuilt, but holy crap 1 to 2mm, its probably finished with its useful life...