Nissan 370Z Forum
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Nissan 370Z Forum (http://www.the370z.com/)
-   Engine & Drivetrain (http://www.the370z.com/engine-drivetrain/)
-   -   370Z oil consumption (http://www.the370z.com/engine-drivetrain/7827-370z-oil-consumption.html)

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 (Post 777539)
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 :icon08:

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 (Post 776196)
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 (Post 781586)
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 (Post 786924)
it is locked and i cant get it....
:) :) :)

AK370Z 10-29-2010 03:23 AM
Quote:
Originally Posted by cab83_750 (Post 781586)
What ever happened to the PDF doc with the Nissan logo?
this pdf?

http://www.the370z.com/370z-technica...level-low.html

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 (Post 788375)
^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 (Post 788808)
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


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