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Oil gallery gasket repair 350z HR and 370z


Richf

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Seems to be a few questions on this so thought I'd post this to try and clarify the problem

 

The later 350Z HR 2007-2009 engine and the 370Z engines can suffer from low oil pressure at hot idle (less than 1 bar / 15psi).

 

This is often caused by oil gallery gasket failure, Nissan improved these gaskets in 2011 and post MY2012'on 370z's should have the uprated gaskets from the factory

 

The pics show the failed gasket.You can see where the bolt holes have elongated as the gasket gets pushed out

 

13010892_10153948824010831_991739962606557901_n_zpsuxyj26hy.jpg

 

13076536_10153948823750831_2005039165522552972_n_zpsr5so1mg6.jpg

 

 

At idle the engines oil pump cant supply enough oil to maintain a good oil pressure because a lot of oil is pouring out of the galleries back into the sump.

 

You wont experience any oil loss but you may have a poor idle, jerky driving at low rpm and low idle oil pressure.

 

 

We keep these uprated gasket sets in stock and they are available on our web site. http://h-dev.co.uk/?...sket-repair-kit

 

To replace these gaskets we charge £799 inc vat and that includes all parts, oil and coolant

 

If you are concerned at all we are happy to check your car and can also check the 370'z since they do not come with a factory oil pressure gauge. After fitting the new gaskets with fresh 5w30 oil we typically see 28-30psi at idle when hot

 

 

13087403_10153948823675831_8185619710615363579_n_zpshf6lsby7.jpg

 

13076714_10153948823855831_7838281624685333083_n_zpsf7vrlgkx.jpg

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I don't suffer from this on my HR (AFAIK) but I'm tempted to get it done when Adrian finally TTs my car... I guess the parts are fairly cheap and it's the time that's the main cost? I'm guessing if the engine is out anyway for the TT kit the swap is fairly easy?

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  • 7 months later...

How do you check the oil pressure on the 370z? I think I might have this issue as idle is a bit erratic, car is 2010 so falls in the age range of affected cars. I'm down in Poole and it is a it of a trek to get the pressure read. I'd happily visit for the work if it did have the issue though. Thanks.

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I am from Bristol and was wondering if this is a 1 day fix. Also being on 70k miles do you think it would be worth replacing the timing chain whilst your practically there obviously depending on whether it is slack as i drive it pretty hard :lol:?

Edited by Dire
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