man but he has a 2013 G. if they had pre assembled motors just waiting to get put into a car, i would think they would run through their stock in the 2012 run.

 

Yeah, just spitballing here, really seems shocking if it was the improved gasket blowing out though.

 

If it does have the metal gasket, maybe it's an issue of the cover itself warping over time. Man, we just added another VQ to our stable (QX70) and I swore to my better half it's a reliable car...

 

It seems like there's plenty of screws holding that plate down, but from the pics I've seen that gasket appears to be tearing and coming out at the same place IIRC, so maybe there is an issue there too???*****Another scenario here, possible that since Nissan/Infiniti replaces the whole assembled cover when doing this R&R they have all these covers assembled (w/ the crap gaskets) and ready to install on new VQs. Rather than getting all the covers retrofitted w/ the new gaskets they just installed whatever inventory they had???

 

From what I can find, there were three different revisions made of the timing cover assembly. Does anyone know if there is any way to determine which revision you are looking at? Is there something stamped on the piece itself?

 

I have heard that you can order the gasket for the 3.5 and it works but the 3.7 only comes as a full assembly. Perhaps that's how they installed the gasket only. Roughly 7 hours labor vs 18 hours labor... Probably still no warranty though

 

From what I've been reading from various sources the two different metals (the aluminum timing cover and the steel oil gallery covers) are the main culprit since they are expanding different from each other. This causes the crappy paper gasket to get exposed on the edges when the gasket cover & timing case have the most gap, oil starts to soak into the gasket from the inside out weakening the gasket and the high oil pressure eventually pushes the gasket to the point where it tears and comes out from under the cover. Wonder if it's possible that even the metal gasket gets to a point where there is a gap between both metals and that gasket just starts leaking (rather than blowing out). Victory, hopefully they can let you inspect that cover they removed and see what that gasket is made of, they at least owe you that.

 

+1

I'm following this thread closely as I too am very curious to see what the real culprit is!

 

Subscribed, 2011 with elite warranty to 100k.. debating whether to extend it or just save for this work

 

Wouldn't this be covered by the factory powertrain warranty, 6 year/70000 miles?

 

Yes but honestly who wants to go through it? Plus it could happen outside the warranty period.

 

Has anyone noted the mileage range that this happens or the percentage of cars affected? Could make a difference when looking to factory coverage.

 

Mine happened a little over 60,000

 

Mileage is all over the place and the percentage seems low.

In my opinion the overall design of the rear timing cover is flawed. It has been revised a total of 3 times, with a total of 4 different versions.

13500-EY00B: 08/2007-11/2009 (2008-2009 Models - some early 2010 models)

13500-EY01B: 11/2009-06/2011 (2010-2011 Models)

13500-EY02B: 06/2011-06/2014 (2012-2013 Models)

13500-EY03B: 06/2014- (2014-present)

The 3.5 HR has 1 revision and a total of 2 designs.

So looks like the real safe model is the Q40 version of the G37.

 

rsingerG37 I gotta wonder what makes some bust and others not?