|Broken Nissan GT-R rear differential|
Here is a video of one 9 second Nissan GT-R from the Middle East that snapped a rear differential on a pass.
|EK's broken rear differntial|
|Willall Racing rear differential brace|
There have been a few rear differential breaks recently, and there have been several that have not been talked about on the forums. One other continuing issue with the GR6 is the lack of service parts. In this case, it should be possible to just replace the differential, but from Nissan the GR6 still an entire assembly. That assembly includes the clutch, the transfer case, the transmission control, the rear differential, and the transmission gears themselves. There are now aftermarket replacement parts, and several shops that are able to work on the transaxles, but it still remains a daunting item for most Nissan GT-R owners.
One other spoken of issue related to the rear differential is temperature. From statements from Mizuno, and Nismo, the rear differential contributes greatly to the overall temperature of the transmission. A few companies have worked on coolers for the rear differential, but its not a very common item to see. Out at the Targa New Zealand, Steve Millen's Nissan GT-R had a rear differential failure of an undetermined nature so far, but there were metal shavings in the oil. It seems like a rear differential, and transmission cooler are important for a car that is road raced. I am working on a guide to the various cooling options, plus some track recommendations for a Nissan GT-R. Check back to the site to see some of the options soon.