Mazda Rotary Club

General => General Technical => Anything Engine/Performance/Tuning related => Topic started by: KrisD1 on April 19, 2011, 09:04:03 PM

Title: Gt35r bearing noise
Post by: KrisD1 on April 19, 2011, 09:04:03 PM
I\'ve got a brand new gt35r from Clive but when the car idles you can hear the bearing, like it doesn\'t get oil, but I checked and it gets enough oil through the restrictor. Is this normal?
Title: Gt35r bearing noise
Post by: steve garbutt on April 19, 2011, 09:09:06 PM
Make sure your oil return is ok as well
Iv seen blocked oil return pipes destroy turbos.
Title: Gt35r bearing noise
Post by: KrisD1 on April 19, 2011, 09:17:29 PM
ok,will check this tomorrow, but it\'s brand new, should it make any noise at all?
the gt28Rs don\'t make this noise on my friends silvia.
Title: Gt35r bearing noise
Post by: clive on April 19, 2011, 10:01:16 PM
Hi Kris,

A turbo will die literally in just a few minutes with no oil feed, I would suggest this is just the turbo itself spinning that you can hear.

I fitted a GT series to my own FD as soon as these ball bearing Turbos came out and it always amused me that when the engine was turned off you could hear the turbo spinning as it slowed to a stop which I can see would be a worry if you didn\'t know what is going on

Hope this helps
Title: Gt35r bearing noise
Post by: billybobbooth on April 21, 2011, 06:50:21 PM
If its a ball bearing turbo it will make like a grinding sort of noise. Easy way to check is if you start the car and rev it slightly then turn it off and the grinding noise slowly stops then its a normal ball bearing turbo noise if there is no grinding after you switch off there is a problem.
Title: Gt35r bearing noise
Post by: Kenji on April 21, 2011, 08:33:46 PM
Ball bearing turbo\'s always make a bit of sound when spinning.
 
 
Still spinning after shutdown? Really?
http://www.youtube.com/watch?v=H1MryAt1dw8
Title: Gt35r bearing noise
Post by: m1tch on April 21, 2011, 09:44:14 PM
Check out long and loud this GT4088R turbo takes to spool down and the noise of the bearings:

http://www.youtube.com/watch?v=H1MryAt1dw8

Haha same video :P
Title: Gt35r bearing noise
Post by: KrisD1 on September 04, 2012, 09:45:36 PM
yep that\'s the sound :-), but is it normal that there\'s a little oilmist in the intake?
Does this go away once it\'s run in?
Title: Gt35r bearing noise
Post by: Ed_RX7parts on September 04, 2012, 11:44:24 PM
Wow...over a year late!!!
Title: Gt35r bearing noise
Post by: KrisD1 on September 05, 2012, 03:35:45 PM
yep, not the fastest one :-p
Title: Gt35r bearing noise
Post by: fil_auto on September 05, 2012, 04:48:20 PM
That\'s awesome... I gotta get myself one of those :)

presumably the tub is Ok then, after a year! :O
Title: Gt35r bearing noise
Post by: boosted on September 05, 2012, 07:03:24 PM
Quote from: fil_auto;835053That\'s awesome... I gotta get myself one of those :)

presumably the tub is Ok then, after a year! :O

...have to wait a year to find out.....?:Giggle