Hello friends! new G37s owner. Curious what kind of issues do we see?

State mileage, type of driving, and mechanical break downs.

Every used car at high mileage I have ever bought was crap. But when i buy low mileage cars and drive them, they dont seem to have break downs, leaks, or major issues or at least until after 150k. I have owned BMW's that have proven really good cars, and my last car a maxima I bought at 40k,and drove until 150k. It ended up having catalytic converter issues that were not worth fixing to.me cus I live in CA and the state rules often require buying over priced emission parts "51 state leagal"

Also I commute a lot of freeway miles, dont hit curbs, roll past stop signs, and drive slow in the city streets.

But I have been known to floor it on occasions, even burn a little rubber. But never see weird issues.

 

The most common failure in these cars is the main differential bushing, which is fluid filled. Look for a persistent stain running down your diff cover.

 

My 2011 G37 Sport is at 110,000 miles and it does track days and drag racing.

I have only had 2 things that needed to be fixed:
(1) Concentric slave cylinder - replaced twice (manual trans only)
(2) Rear diff bushing (as Rochester mentioned)

Generally if your change the oil every 5,000 - 7,000 miles (and use a synthetic) it should run a very long time.

 

I really hope you went with the CMAK the second time around.

 

I think if the OP had a 6MT, he would have put that out there.

AT owners assume the rest of the world is AT. Not so much the other way around.

 

No I didn't.
With the CMAK, the throwout bearing fork doesn't have a rubber boot and there is an ~1" x 1/2" opening in the side of the transmission.
With the salt brine used on the roads, I would like the bell housing sealed as much as possible.

The next time, I will be putting in a JWT heavy duty CSC.

 

Sonic, RJM has been making this claim for years: "Reduces or Eliminates OEM Slave & CSC Failures on these cars."

Is it true? But I like to think it is, if only for peace of mind. When my CSC blew out 7 years ago, it was under warranty and I had them replace it with OEM, but I also bought the RJM assembly shortly after.

 

I wouldn't worry about it however they come with a rubber boot now.

 

That's good to know!

Pic from their site:

 

If I remember correctly, their theory was the CSC being "over extended" . JWT has a different theory:
I'll figure it out when it fails again

 

That's good reading from JWT. I'd not seen that before. Sure would be interesting to get RJM's take on that opinion.

Bet you $5 we are way-y-y off topic from the OP's original intent. Like I said about 7AT vs 6MT owners... And here we are.

 

How about this to get back on topic:

Additional issue to watch for:
• Plugged sun roof drains, resulting in water on the BCM (resulting in possible damage), wet floor mats and a 2" deep pool of water under the carpet.


That's all I got

 

The cmak is just reverting back to more analog tech like the cd006 brought which is a standard throwout bearing moved by a fork and slave cylinder.

A CSC (concentric slave cylinder) is just a hydraulic throwout bearing which incorporates the bearing and the slave. It's tech that most manual folks upgrade to, in Nissans case if they had done a better job with the designing of their CSC the CMAK would have never been made.


OP:
Cats will fail at one point
PCV/Breather hoses crap out
Valve cover leaks will hapen
They dont like exhaust leaks at all
Transmission fluid change can improve your shifting
Denso spark plugs only for maintenance (Please refrain from ebay/amazon plugs)
Sunroof leaks
Bluetooth has a mind of it's own

 

in 3 years:
Sunroof leaked
chrome flaking from back-up light reflectors
slave cyl on clutch system died
rust on wheel hubs caused brake and wheel shimmy
volume **** on stereo skipping
leather on seats has cracks (that were there when I bought it)
hard to fill with gas when below 1/4 tank

I've fixed all but the seats and gas issue, and I have leather for the seats in the garage.

 

Z1 just confirmed Nissan has went to a CMAK design on the hydraulics for the 400z