Nissan 370Z Forum - Official Nissan 370Z Synchro Rev Match Transmission thread

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I wonder what will happen with the dreaded issue of money shifting aka mis shifting?

Once in a great while, you will hear a story of how someone wants to downshift from say, 5th gear down to 4th, but accidentally put it in 2nd gear, causing the car to over rev and damage the engine.

With the synchro feature, will it lock you out from going into the 2nd gear?

Quote:

Originally Posted by wj4 (Post 17757)

That's the only problem. It will overrev and may damage the engine if you're not watching the tach but if you downshift to 2nd from 5th manually(without S mode) by accident , same damage will occur.

^ Very true.

It will just happen quicker if you have S mode on and putting in the clutch while in gear will just return the revs to redline if the rev-match is still working. (unless there is a saftey feature that deactivates this once in overrev).

On the other hand, it could save the day...

Lets say your on track, heavy on the brakes while downshifting to fourth, you suddenly hear engine cut-off (redline) due to the rev-match feature trying to match your engine speed to the road.

"Oh SNAP! I was about to downshift into second and blow my motor!" you say, as you immediately stop and go into fourth instead = Synchro-Rev Match (and rev-limiter) saves the day!

The problem is finding a track guy with a humble enough ego to get use to it.

2009 Nissan 370Z: Is Synchro RevMatch the Way of the Future?

http://blogs.edmunds.com/roadtests/Zshift01.gif

Quote:

Every once in a while an automotive technology will come along that has me yearning for it to trickle down into other cars. Sometimes it's a small thing (satellite radio) and other times it's a game changer like the Synchro RevMatch manual transmission found in our long-term Nissan 370Z.

The ease of making rev-matched downshifts differs based on pedal placement, throttle tip-in, driver's foot size, position of the moon, familiarity with the car, and of course, driver skill. I don't claim to be a heal-toeing maestro, but I find our M3 and Mini Cooper S to be incredibly easy ... the Challenger not so much.

But none of that matters in the Zed (which is spelled as such for my fellow Canadians out there). Once I got beyond the initial trepidation of dropping the clutch without matching revs, I found myself downshifting a lot more. At traffic lights, I'll go down through the gears just for the hell of it rather than coasting in whatever gear I was in. Sure, there could be a "lost art" element to this new technology, but I think it makes shifting your own gears more fun.

Now if only it was attached to a more pleasant engine. So here's hoping that the remaining purveyors of manual transmissions develop their own Synchro RevMatch. As Howard Hughes said 1,988 times at the end of The Aviator, "it's the way of the future."

James Riswick, Automotive Editor @ 6,470 miles

Source: 2009 Nissan 370Z: Is Synchro RevMatch the Way of the Future? | Long-Term Road Tests Blog on Edmunds' Inside Line

Even though some of my friends don't like the Z but they have all praised about the synchroRev match technology. One of them (who drives a bmw) is totally amazed by the SRM and wishes if BMW would adapt this technology on the upcoming vehicle. I personally love the feature and still haven't turned off since I left the dealer lot. I gotta say, thanks Nissan to bring something new to the table. :worship:

Does DRM (or synchrorev) work with 7-Speed Automatic using Manual Paddle shift?

Quote:

Originally Posted by glueShoe (Post 102246)

Does DRM (or synchrorev) work with 7-Speed Automatic using Manual Paddle shift?

Of course. Every automatic transmission by default has "synchro rev match"

Quote:

Originally Posted by gatorfast (Post 102263)

Of course. Every automatic transmission by default has "synchro rev match"

You may have misunderstood my question. I know automatics will syncrev and the 370 has DRM in Automatic mode. However, what happens if you paddle shift the 7-Speed Automatic - Manually -? Do you still get the benefit of DRM (or syncrev matching)?

Quote:

Originally Posted by glueShoe (Post 102361)

It's all a smooth transition whether up or down. Paddle shifters or not.

Quote:

Originally Posted by KingDavid (Post 102378)

It's all a smooth transition whether up or down. Paddle shifters or not.

Ok, excellent. Thanks for the answer.

Does anyone know yet whether a change in the final drive gear (from the stock 3.69 to say, 4.08) would affect the function of SRM?

Hmm, with this upshift feature...changing to lighter flywheel wont have much impact then??? Usually most people worry the RPM will drop much quicker with lighter flywheel and it would be harder to shift-up (have to shift quick enough) so the RPM wont drop that much...?!?! :confused:

Does this mean you can just dump the clutch when up or down shifting?

And does it stay on even when the engine is turned off, you get out of the car, turn on the alarm, come back the next day, turn off the alarm, get in the car, and start the engine?

Quote:

Originally Posted by wj4 (Post 17757)

Synchrorev match does not prevent mis-shifting. If you over-rev, it won't help. Just make sure you pray to the car gods when that needle starts flying deep into that red zone.

When lapping at the race track, I often hit the Rev-limiter will downshifting... Besides the "wheelhopping" effects, I do not understand why this will cause a blown engine???
Done this more than 300 times on my previous car without any engine issues... Is the Rev Matching disabling the engine cut-off sensors???

Quote:

Originally Posted by Philipp (Post 172292)

Mmmm... Never heard of wheelhop while moving, but wheelhop from a standstill is by far more dangerous to your rear end then wheelhop from a roll. Traction control helps eliminate wheelhop as well as deflating the tires somewhat. If you don't want traction control on, I suggest solid rear bushings.

It's also wierd that you are red-lining while down shifting even with synchro-rev match. I don't know how to fix that other than telling you to downshift sooner.