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-   -   Transmission Issues Resolved? (http://www.the370z.com/engine-drivetrain/44554-transmission-issues-resolved.html)

ImportConvert 10-26-2011 03:20 AM

Transmission Issues Resolved?
 
A while back a lot of people were talking about how the 370Z's transmission (Manual) had issues, and even was it Edmund's or Motortrend's or someone's? long-term test Z had the transmission go out.

Anyway, I have not heard hide nor hair of that complaint for quite some time.

Did Nissan upgrade the syncro's quietly?

I know GM (Sorry, it's what I own, so what I relate everything else to) was having a few complaints and they changed the synchro's in all their cars out in '11 that had the TR6060 transmission. They made a pretty good deal of it, too. Just wondering it Nissan slipped a quick one in and fixed the problem while everyone was worrying about another shade of gray and the back-up camera?

I just have not seen anyone complaining about their transmission going out who owns an '10 or later. Is fixed?

FL 4Motion 10-26-2011 09:10 PM

no idea if nissan made updates but sub'd for possible answer(s).

Red__Zed 10-26-2011 09:59 PM

lemers and fromG2Z both had issues in their 2010s. I think Lemer's is in the early stages, and From's was as well.

ImportConvert 10-26-2011 10:01 PM

Quote:

Originally Posted by Red__Zed (Post 1379348)
lemers and fromG2Z both had issues in their 2010s. I think Lemer's is in the early stages, and From's was as well.

As in, late CY2009 production/early YM2010, or as in, early stages of being addressed/fixed, or as in, occurred early in the car's life?

What were the issues? Anything can have issues, but were they the grinding that people with '09's complained about in 5th gear, etc?

Red__Zed 10-26-2011 10:04 PM

Quote:

Originally Posted by ImportConvert (Post 1379355)
As in, late CY2009 production/early YM2010, or as in, early stages of being addressed/fixed, or as in, occurred early in the car's life?

What were the issues? Anything can have issues, but were they the grinding that people with '09's complained about in 5th gear, etc?

early stages, ie, trans hasn't failed. Both cars are 2010's.

To my knowledge, Nissan has not changed the synchros. It is a tad questionable how much of an issue it is though...


http://www.the370z.com/engine-drivet...-into-5th.html

ImportConvert 10-27-2011 02:14 AM

Quote:

Originally Posted by Red__Zed (Post 1379360)
early stages, ie, trans hasn't failed. Both cars are 2010's.

To my knowledge, Nissan has not changed the synchros. It is a tad questionable how much of an issue it is though...


http://www.the370z.com/engine-drivet...-into-5th.html

Quote:

Originally Posted by Lemers (Post 1347298)
My was an early 2010. Built Oct 09? Bought Jan 10

Falls in line with what I was suspicious of. I have yet to see this with an '11, or a late-build '10. I think Nissan did a silent change. Can you point me to a post where a '11 or late '10 build shat the bed?

Rui Z 10-27-2011 02:44 AM

Ya I would be most concerned about the synchros and oil consumption. This is probably the biggest reason why I'm not keeping my 2010 model year car beyond the powertrain warranty period.

ImportConvert 10-27-2011 04:21 AM

Quote:

Originally Posted by Rui Z (Post 1379529)
Ya I would be most concerned about the synchros and oil consumption. This is probably the biggest reason why I'm not keeping my 2010 model year car beyond the powertrain warranty period.

If your car makes it past 60K miles, it's not going to just suddenly start drinking oil and grinding.

Nissan addressed the oil consumption issue, and I think may have silently addressed synchro's.

m4a1mustang 10-27-2011 06:59 AM

I have observed far fewer transmission complaints from 2010+ owners. We had a lot of issues back in 2009 with the first model year, with a number of transmissions being replaced (often multiple times), but that seems to have stopped.

ImportConvert 10-27-2011 07:21 AM

Quote:

Originally Posted by m4a1mustang (Post 1379596)
I have observed far fewer transmission complaints from 2010+ owners. We had a lot of issues back in 2009 with the first model year, with a number of transmissions being replaced (often multiple times), but that seems to have stopped.

Just browsing the forum and antagonizing a few people here and there as it were, my observation mirrors your own as stated. I would be curious to know for fact. I know most auto manufacturers make "silent changes" to problem areas, and I think this was one for Nissan. I drove a couple of '10 370Z's and had nothing ill at all to say about the shifter and what it stirred. Then, my experience with manuals is limited to Tremec models TR3650,TR6060,TKO500, and T56. Notchiness is something I am incapable of noticing anymore.

Rui Z 10-27-2011 12:05 PM

Quote:

Originally Posted by ImportConvert (Post 1379537)
If your car makes it past 60K miles, it's not going to just suddenly start drinking oil and grinding.

Nissan addressed the oil consumption issue, and I think may have silently addressed synchro's.

That's probably true for the oil. However, I'm a slow driver, so it will take longer for the synchros to wear out for me. Mine was a December 2009 build date.

ImportConvert 12-07-2011 06:14 AM

Quote:

Originally Posted by Rui Z (Post 1380196)
That's probably true for the oil. However, I'm a slow driver, so it will take longer for the synchros to wear out for me. Mine was a December 2009 build date.

I don't think it's necessarily wear related to slow vs. fast driving (unless by fast you mean a lot of powershifting, etc), but rather a tolerance/defect issue. When tolerances are off, mechanical things wear very fast. In my experience, either it will break ASAP, or it will last until the end of its normal service-life unless something occurs during that timeframe.

Parts in moving assembly seem to have a lot of wear initially, then the wear will taper off after the parts are lapped in, and slowly/steadily continue to wear until tolerances open up beyond spec, and once again the wear accelerates rapidly toward decline/end of service-life. This is of course barring any changes during that service-life, such as a hard launch tweaking a pinion bearing, etc.

IDZRVIT 12-07-2011 06:23 AM

Quote:

In my experience, either it will break ASAP, or it will last until the end of its normal service-life unless something occurs during that timeframe.
Engineers express this as a 'bathtub' curve. Probability of a failure is high when new. If it doesn't fail then the probability for failure throughout its life drops until the end of its normal service life whereupon it rises again. Hence, a bathtub shaped curve.

ImportConvert 12-07-2011 07:34 AM

Quote:

Originally Posted by IDZRVIT (Post 1439503)
Engineers express this as a 'bathtub' curve. Probability of a failure is high when new. If it doesn't fail then the probability for failure throughout its life drops until the end of its normal service life whereupon it rises again. Hence, a bathtub shaped curve.

Yep. It has been my experience with everything I have owned with 2 or more moving parts.

Notsud 13 12-08-2011 06:35 PM

i have a 2009 model, not sure if its an early or late model but everything seems fine to me. the transmission is a lot harsher than most of the newer manual transmissions out there, but its not all that bad. It definitely makes more noticeable clunking noises compared to other cars, but I actually like it....it feels more like a machine lol.


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