370Z oil consumption

katillidie · 10-22-2010, 05:44 PM

well didn't get the vq done today but letting everyone know that not only does the gasket kit contain every freaking o ring and gasket on the engine... but also contains new valve seals... lol sooo i guess nissan never actually figured out the exact problem and or its a combination of the two (piston rings and valve seals) that make the vq's eat oil like its their job...

antennahead · 10-22-2010, 05:46 PM

Quote:

Originally Posted by katillidie

well didn't get the vq done today but letting everyone know that not only does the gasket kit contain every freaking o ring and gasket on the engine... but also contains new valve seals... lol sooo i guess nissan never actually figured out the exact problem and or its a combination of the two (piston rings and valve seals) that make the vq's eat oil like its their job...

New valve seals, interesting

cab83_750 · 10-22-2010, 07:41 PM

Are you/have you worked on the 370z engine? What do you think the cause of the oil consumption? Is the OC issue gone on the engine that you personally worked on?

Still wondering why there are no details on why these engines drink oil.

ChrisSlicks · 10-22-2010, 09:01 PM

Quote:

Originally Posted by katillidie

i take great offense to this statement...i am a nissan tech, tomorrow i will be performing the oil consumption bulletin on an o6 350z... i follow all guidelines and torque specs that nissan has provided in the service manual... as for nissan and the short block instead of a long block.. the bulletin specifically states if the vehicle fails oil consumption test it gets a short block and full gasket set, and honestly i think the only way to get a long block would be to complain to nissan directly, the dealer really doesn't have any say, because there is a specific billetin for the problem...

It wasn't meant to be offensive, just a statement. I'm sure you are a very good tech but for engine assembly I would would prefer an engine builder, i.e. someone that does it day in and day out, not once a month or more.

blackflag · 10-25-2010, 01:16 PM

Wow! Just wow.

WarmAndSCSI · 10-25-2010, 01:42 PM

Every engine rebuild gasket set contains new valve stem seals. It's not usually those which leak on new engines, it's the brass valve guides with too loose of clearances around the valve stems.

Not sure what's going on with the VHR, but if it's the valve guides, Nissan should be replacing cylinder heads and short blocks (due to oil consumption build up). I'm assuming this is a problem with the cylinder wall finish or piston ring wear/lapping if Nissan is replacing short blocks only.

cab83_750 · 10-25-2010, 10:50 PM

What ever happened to the PDF doc with the Nissan logo?

katillidie · 10-28-2010, 11:19 PM

Quote:

Originally Posted by cab83_750

What ever happened to the PDF doc with the Nissan logo?

it is locked and i cant get it....

cab83_750 · 10-29-2010, 12:33 AM

Quote:

Originally Posted by katillidie

it is locked and i cant get it....

AK370Z · 10-29-2010, 03:23 AM

Quote:

Originally Posted by cab83_750

What ever happened to the PDF doc with the Nissan logo?

this pdf?

TSB: 2009-2010 Nissan 370Z: Engine Oil Level Is Low

spearfish25 · 10-29-2010, 10:28 PM

^Nice. It's incredible just how generous Nissan is with 'acceptable' oil consumption. I've never seen my dipstick reading drop anywhere close to 18mm over 3k miles on any car!

blackflag · 10-30-2010, 02:13 AM

Quote:

Originally Posted by spearfish25

^Nice. It's incredible just how generous Nissan is with 'acceptable' oil consumption. I've never seen my dipstick reading drop anywhere close to 18mm over 3k miles on any car!

I have.

gorillanismo · 10-30-2010, 11:54 AM

finally, nobody know exactly what is the root of the problem???

dlmartin81 · 10-30-2010, 09:25 PM

Thanks AK! I'm definitely going to the dealer with this in the near future.

katillidie · 10-30-2010, 10:30 PM

Quote:

Originally Posted by gorillanismo

finally, nobody know exactly what is the root of the problem???

well as of nissan wont tell us nor do they give reasons for the oil consumtion, but. i have asked some older 30 year master techs at nissan training about it, and it supposivly has always been a problem with nissan engines with the rings not seating correctly... with either the manufacturer of the rings or the cylinder wall surface. no body really knows except for the higher ups at nissan who wont disclose any info

10-25-2010, 01:42 PM	#186 (permalink)
WarmAndSCSI A True Z Fanatic Join Date: May 2010 Location: SLC, UT Posts: 1,671 Drives: '08 Evo X \| '10 370Z Rep Power: 17	Every engine rebuild gasket set contains new valve stem seals. It's not usually those which leak on new engines, it's the brass valve guides with too loose of clearances around the valve stems. Not sure what's going on with the VHR, but if it's the valve guides, Nissan should be replacing cylinder heads and short blocks (due to oil consumption build up). I'm assuming this is a problem with the cylinder wall finish or piston ring wear/lapping if Nissan is replacing short blocks only. __________________ '10 PW 370Z 7AT - wife's car - Project Raspberry Cheesecake '08 Evo X - built motor+trans \| BB-X @ 32 psi \| CH3OH \| self-built+tuned - ??? WHP '01 Galant V6 - built motor \| GT35R \| self-built+tuned - 550+ WHP (retired)

10-29-2010, 10:28 PM	#191 (permalink)
spearfish25 A True Z Fanatic Join Date: Mar 2009 Location: Naples, FL Posts: 4,117 Drives: to work Rep Power: 1856	^Nice. It's incredible just how generous Nissan is with 'acceptable' oil consumption. I've never seen my dipstick reading drop anywhere close to 18mm over 3k miles on any car! __________________ 2013 Cadillac V-Wagon, RIP Z

10-30-2010, 11:54 AM	#193 (permalink)
gorillanismo Base Member Join Date: Jun 2009 Location: Puerto Rico Posts: 112 Drives: 03Chevrolet Cavalier Rep Power: 15	finally, nobody know exactly what is the root of the problem??? __________________ SHIFT: The Future NISSAN

10-30-2010, 09:25 PM	#194 (permalink)
dlmartin81 Track Member Join Date: Dec 2008 Location: Chalfont, PA Age: 42 Posts: 923 Drives: 09 370Z Rep Power: 607	Thanks AK! I'm definitely going to the dealer with this in the near future. __________________ Dan F.I. SS CBE 18-R \|\| Llumar 40% tint

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10-22-2010, 05:44 PM	#181 (permalink)
katillidie Base Member Join Date: Oct 2010 Location: pa Posts: 13 Drives: hardbody Rep Power: 14	well didn't get the vq done today but letting everyone know that not only does the gasket kit contain every freaking o ring and gasket on the engine... but also contains new valve seals... lol sooo i guess nissan never actually figured out the exact problem and or its a combination of the two (piston rings and valve seals) that make the vq's eat oil like its their job...

10-22-2010, 07:41 PM	#183 (permalink)
cab83_750 Track Member Join Date: Apr 2009 Location: CA Posts: 887 Drives: 09 NISSAN 370Z Rep Power: 417	Are you/have you worked on the 370z engine? What do you think the cause of the oil consumption? Is the OC issue gone on the engine that you personally worked on? Still wondering why there are no details on why these engines drink oil.

10-25-2010, 01:16 PM	#185 (permalink)
blackflag Base Member Join Date: Jan 2010 Location: US Posts: 121 Drives: 2009 Z 6M base. Rep Power: 15	Wow! Just wow.

10-25-2010, 10:50 PM	#187 (permalink)
cab83_750 Track Member Join Date: Apr 2009 Location: CA Posts: 887 Drives: 09 NISSAN 370Z Rep Power: 417	What ever happened to the PDF doc with the Nissan logo?