Roller bearing turbos - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

richardr33 · 19th July 2008, 03:53 PM

Hi guys, if you have roller bearing turbos like HKS 2510s when you have taken the car out and then turned it of, the turbos sound like they are still spinning for about 5 to 10 seconds is this right.
I am i being thick

Smokey 1 · 19th July 2008, 04:40 PM

yes mate spot on, they will keep spinning for a while after the engine is switched off. Perfectly normal

Smokey

SamuraiSam · 19th July 2008, 07:04 PM

Ball bearing.

Roller bearings are like elongated cylinders. Balls are perfectly spherical. You won't see flat or taper roller bearings in any turbocharger.

richardr33 · 20th July 2008, 02:06 AM

Thats what I meant.

SamuraiSam · 20th July 2008, 02:13 AM

I know, i was just being an ass as usual

cheers

seve7 · 21st July 2008, 08:29 PM

Quote:

Originally Posted by SamuraiSam

Ball bearing.

Roller bearings are like elongated cylinders. Balls are perfectly spherical. You won't see flat or taper roller bearings in any turbocharger.

you saved having to try and figure out who made roller bearing turbos.

Paul Hackley · 23rd July 2008, 01:55 PM

Mines the same, even if you let it idle for an hour before you switch it of you get the slow down whine

19th July 2008, 03:53 PM	#1 (permalink)
richardr33 GTR Register Member Join Date: Oct 2007 Posts: 152	Roller bearing turbos Hi guys, if you have roller bearing turbos like HKS 2510s when you have taken the car out and then turned it of, the turbos sound like they are still spinning for about 5 to 10 seconds is this right. I am i being thick

19th July 2008, 04:40 PM	#2 (permalink)
Smokey 1 GTROC Member Join Date: Nov 2005 Location: The big SMOKE 574 Posts: 1,512	yes mate spot on, they will keep spinning for a while after the engine is switched off. Perfectly normal Smokey __________________ It's all about driving a race car on the street !!! 10.59@133 mph TOTB Handling 52.026 sec Snetterton Super Battle 2008 "No story sits by itself. Sometimes stories meet at corners and sometimes they cover one another completly, like stones beneath a river"

20th July 2008, 02:06 AM	#4 (permalink)
richardr33 GTR Register Member Join Date: Oct 2007 Posts: 152	Ball bearing Thats what I meant.

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19th July 2008, 07:04 PM	#3 (permalink)
SamuraiSam GTR Register Member Join Date: Oct 2007 Posts: 390	Ball bearing. Roller bearings are like elongated cylinders. Balls are perfectly spherical. You won't see flat or taper roller bearings in any turbocharger.

20th July 2008, 02:13 AM	#5 (permalink)
SamuraiSam GTR Register Member Join Date: Oct 2007 Posts: 390	I know, i was just being an ass as usual cheers

23rd July 2008, 01:55 PM	#7 (permalink)
Paul Hackley New Users Join Date: Jan 2003 Location: Devon Posts: 462	Mines the same, even if you let it idle for an hour before you switch it of you get the slow down whine