how best to "prime" a new turbo? - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

Listerofsmeg · 2nd October 2008, 07:41 PM

How exactly do you do this? do you fit it and turn the engine over (without firing) to push oil through it?

or do you put some oil up the oil drain to lube the bearings up first??

any other suggestions?

Ironically given that ive probably used about 8 different turbos on various cars, ive never owned a brand new one....!!

Mookistar · 2nd October 2008, 08:51 PM

unplug the CAS and turn it over for 30 seconds AFAIK

mook

Listerofsmeg · 2nd October 2008, 08:51 PM

yup, got my answer

think my battery would die after 30 secs though :P

cokey · 2nd October 2008, 09:15 PM

I primed the new turbo's by injecting best quality synthetic into the cartridge and same for the feed tube before fitting. I also span the wheels during this. it may be considered anal by some but my thinking was they would at least be lubricated whilst the oil system got round to pressurising the system. Even though there would be no boost on tickover they would still spin.I thought it would be stupid not to bearing the cost of the new turbos !
I await be-ration from all the internet experts on here.

Seemed to work fine in my opinion.
cokey

minifreak · 2nd October 2008, 09:20 PM

you could unplug the CAS and remove the plugs meaning no compression so the turbos would spin very little and due to the higher speed of the engine turning over id imagine a little more oil pressure.

just an idea

cokey · 2nd October 2008, 10:29 PM

I unplug the cas routinely when I go to the batcave and spin the motor till I have 4 bar oil pressure before I start it.
Thats because the batsignal does not go off that often up here, and it only takes a few seconds thanks to my Tomei pump.
Maybe my paranoia stems from this being the 3rd engine in my car and its special !
This compulsive behaviour may change once I fit the accusump thats in the boot ?
Cant be good to run new turbos dry out the box till the oil pump gets to pressure the system and feed them can it ?
Only my opinion though, cokey

Piggaz · 3rd October 2008, 03:31 AM

Plugs out, unplug CAS and crank.
Cant see there being any other way.

ecoshardcore · 3rd October 2008, 05:45 AM

unplug cas, pull the fuel pump fuse and crank for 30 seconds. reinsert fuel pump fuse and plug cas back in.

turbotim1980 · 3rd October 2008, 09:40 AM

I recently changed turbos on my gtr i did the take out the fuse in the boot trick, started the car for ten seconds at a time till oil pressure light extinguished. obviously you must change the engine oil when doing turbos, well i did anyway best to prime them with fresh clean oil.
when you are happy that oil has circulated everywhere and every time you start without the fuse in the oil pressure gauge starts to read then it should be fine.
re-insert the fuse start the car let idle for 5 -10 minutes without revving once this is done you may gradually rev the car i did this and let it run for about 30 minutes and drove around for 20 minutes on light throttle.

job done now bring the turbos in gradually away you go .

miragev · 3rd October 2008, 01:16 PM

Quote:

Originally Posted by cokey

I primed the new turbo's by injecting best quality synthetic into the cartridge and same for the feed tube before fitting. I also span the wheels during this. it may be considered anal by some but my thinking was they would at least be lubricated whilst the oil system got round to pressurising the system. Even though there would be no boost on tickover they would still spin.I thought it would be stupid not to bearing the cost of the new turbos !
I await be-ration from all the internet experts on here.

Seemed to work fine in my opinion.
cokey

i did exactily the same mate when i fitted my 2530's

better safe than sorry for the sake of 10 minutes running oil through them ..

Madden · 3rd October 2008, 02:06 PM

Just unplug the Cas as that also turns the fuel system off. So the injectors wont work.

Removing the plugs will be good as that will not put any air out the exhaust to spin the turbo's.

ecoshardcore · 3rd October 2008, 06:25 PM

Quote:

Originally Posted by Madden

Just unplug the Cas as that also turns the fuel system off. So the injectors wont work.

Removing the plugs will be good as that will not put any air out the exhaust to spin the turbo's.

Doh! I forgot about that

GT-R Glenn · 4th October 2008, 03:54 AM

I think pretty much everything everyone has said is correct, but dont underestimate how good ball bearings are(Im assuming its a bb turbo)
Im 99.9% sure you could just stick them on the engine and start it, with it idling and let the oil find its own way to the turbo.
It would only take a fraction of a second to get oil into the cartridge.
Remember its no differerent than any other time you start it....
Except it might not have residual oil in the bearings.
But I bet it has ....

minifreak · 4th October 2008, 07:24 AM

see what your saying glenn, but im sure youll agree. for safety, it takes 2 secs to unplug the CAS and nomore than 5 mins to remove plugs.

GT-R Glenn · 5th October 2008, 03:32 AM

Yep definatley,
But, if the car sat around for 4 months without being started, it wouldnt be any different.

2nd October 2008, 07:41 PM	#1 (permalink)
Listerofsmeg GTROC Member Join Date: Jul 2006 Location: Shefford, Beds Posts: 1,694	how best to "prime" a new turbo? How exactly do you do this? do you fit it and turn the engine over (without firing) to push oil through it? or do you put some oil up the oil drain to lube the bearings up first?? any other suggestions? Ironically given that ive probably used about 8 different turbos on various cars, ive never owned a brand new one....!! __________________ White R33 GTR Its working!! 10.908 @ 128mph on pump fuel and full trim!

2nd October 2008, 08:51 PM	#2 (permalink)
Mookistar ADMINISTRATOR Join Date: Feb 2004 Location: Living life 8min 50 secs at a time Posts: 10,128	unplug the CAS and turn it over for 30 seconds AFAIK mook __________________ WANTED - TEIN FLEX for R33 GTR FOR ALL GTR FORUM RELATED ISSUES CONTACT THE ADMIN TEAM 'MOOKISTAR' OR 'MOLEMAN' SKYLINE FAQ'S!

2nd October 2008, 08:51 PM	#3 (permalink)
Listerofsmeg GTROC Member Join Date: Jul 2006 Location: Shefford, Beds Posts: 1,694	yup, got my answer think my battery would die after 30 secs though :P __________________ White R33 GTR Its working!! 10.908 @ 128mph on pump fuel and full trim!

3rd October 2008, 05:45 AM	#8 (permalink)
ecoshardcore GTR Register Member Join Date: Nov 2007 Location: US Posts: 231	unplug cas, pull the fuel pump fuse and crank for 30 seconds. reinsert fuel pump fuse and plug cas back in. __________________ For all your turbocharged desires! Dealers for: Garrett,HKS,OS Giken,Defi,Aem,ATI Psi Supply sales@psi-supply.com www.psi-supply.com Garrett GT2860-5, -7, -9 and -10 turbos instock! TO4Z's are incoming Click below for screaming deals http://www.gtr.co.uk/forum/104035-80...ping-sale.html

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2nd October 2008, 09:15 PM	#4 (permalink)
cokey GTR Register Member Join Date: Sep 2003 Location: edinburgh Posts: 1,120	I primed the new turbo's by injecting best quality synthetic into the cartridge and same for the feed tube before fitting. I also span the wheels during this. it may be considered anal by some but my thinking was they would at least be lubricated whilst the oil system got round to pressurising the system. Even though there would be no boost on tickover they would still spin.I thought it would be stupid not to bearing the cost of the new turbos ! I await be-ration from all the internet experts on here. Seemed to work fine in my opinion. cokey

2nd October 2008, 09:20 PM	#5 (permalink)
minifreak New Users Join Date: Mar 2006 Location: North East London Posts: 757	you could unplug the CAS and remove the plugs meaning no compression so the turbos would spin very little and due to the higher speed of the engine turning over id imagine a little more oil pressure. just an idea

2nd October 2008, 10:29 PM	#6 (permalink)
cokey GTR Register Member Join Date: Sep 2003 Location: edinburgh Posts: 1,120	I unplug the cas routinely when I go to the batcave and spin the motor till I have 4 bar oil pressure before I start it. Thats because the batsignal does not go off that often up here, and it only takes a few seconds thanks to my Tomei pump. Maybe my paranoia stems from this being the 3rd engine in my car and its special ! This compulsive behaviour may change once I fit the accusump thats in the boot ? Cant be good to run new turbos dry out the box till the oil pump gets to pressure the system and feed them can it ? Only my opinion though, cokey

3rd October 2008, 03:31 AM	#7 (permalink)
Piggaz GTR Register Member Join Date: Sep 2002 Location: Sydney, Australia Posts: 747	Plugs out, unplug CAS and crank. Cant see there being any other way.

3rd October 2008, 09:40 AM	#9 (permalink)
turbotim1980 GTR Register Member Join Date: May 2007 Location: Enfield Posts: 48	I recently changed turbos on my gtr i did the take out the fuse in the boot trick, started the car for ten seconds at a time till oil pressure light extinguished. obviously you must change the engine oil when doing turbos, well i did anyway best to prime them with fresh clean oil. when you are happy that oil has circulated everywhere and every time you start without the fuse in the oil pressure gauge starts to read then it should be fine. re-insert the fuse start the car let idle for 5 -10 minutes without revving once this is done you may gradually rev the car i did this and let it run for about 30 minutes and drove around for 20 minutes on light throttle. job done now bring the turbos in gradually away you go .

3rd October 2008, 02:06 PM	#11 (permalink)
Madden New Users Join Date: Nov 2004 Location: Berkshire Posts: 2,054	Just unplug the Cas as that also turns the fuel system off. So the injectors wont work. Removing the plugs will be good as that will not put any air out the exhaust to spin the turbo's.

4th October 2008, 03:54 AM	#13 (permalink)
GT-R Glenn GTR Register Member Join Date: Nov 2002 Location: Waiuku NZ Posts: 1,170	I think pretty much everything everyone has said is correct, but dont underestimate how good ball bearings are(Im assuming its a bb turbo) Im 99.9% sure you could just stick them on the engine and start it, with it idling and let the oil find its own way to the turbo. It would only take a fraction of a second to get oil into the cartridge. Remember its no differerent than any other time you start it.... Except it might not have residual oil in the bearings. But I bet it has ....

4th October 2008, 07:24 AM	#14 (permalink)
minifreak New Users Join Date: Mar 2006 Location: North East London Posts: 757	see what your saying glenn, but im sure youll agree. for safety, it takes 2 secs to unplug the CAS and nomore than 5 mins to remove plugs.

5th October 2008, 03:32 AM	#15 (permalink)
GT-R Glenn GTR Register Member Join Date: Nov 2002 Location: Waiuku NZ Posts: 1,170	Yep definatley, But, if the car sat around for 4 months without being started, it wouldnt be any different.