Notices
2009+ 370Z General discussion and news for the Z34 (2009+) Nissan 370z with the new 3.7-liter V6

SycnroRev Matching vs Traditional Double Clutching

Thread Tools
 
Search this Thread
 
Old Apr 3, 2009 | 11:21 AM
  #21  
morepower2's Avatar
morepower2
Registered User
 
Joined: Dec 2002
Posts: 126
Likes: 0
From: california
Default

Syncro rev is so much better that doing it yourself, its not even worth trying, and I am an experianced driver-maunal transmission guy.

Syncro-revs perfect matching is easier on the clutch and driveline.
Reply
Old Apr 3, 2009 | 11:40 AM
  #22  
BrianV's Avatar
BrianV
Registered User
 
Joined: Apr 2004
Posts: 224
Likes: 0
From: Austin, TX
Default

Actually double-clutching does provide one advantage over heel toe downshifing/rev-matching.

I studied it some time ago and there is some component in the drivetrain that doesn't get its input/output speed matched when you do a regular rev-match.

I double-clutch only because it's what I originally learned and I don't have a desire to start over. I've got over a decades of double-clutch experience so I'll stick with it.
Reply
Old Apr 4, 2009 | 12:58 AM
  #23  
bauertt's Avatar
bauertt
Registered User
 
Joined: Sep 2005
Posts: 121
Likes: 0
From: Vancouver
Default

'back in the day' ?

dude. You're 28. There is no back in the day to you unless you're referring to when you were 8 and used to spin donuts on your radio flyer.

but to answer your question, isn't this obvious? I mean, especially if you were an engineer and what not. You'd know the SyncroRev isn't trying to double clutch. Like Mcarther101 said... buy some old school vehicle if you want to be fast, and furious.
Reply
Old Apr 4, 2009 | 06:01 AM
  #24  
dkmura's Avatar
dkmura
General & DIY Moderator
MY350Z.COM
Premier Member
20 Year Member
Liked
Loved
Community Favorite
iTrader: (64)
 
Joined: May 2002
Posts: 8,623
Likes: 1,392
From: Aurora, Colorado
Default

I've read the comments here with interest and as a racer with over 20+ years of experience, I think SyncroRev offers some technological advantages for both downshifts AND upshifts. While I also use heel-toe technique on a regular basis, it wouldn't stop me from using SyncroRev to be more precise in blipping the throttle. I experimented with this when testing the 370Z at Spring Mountain Motorsports Ranch for Nissan Sport Magazine and found SyncroRev worked in harmony with my technique.

One disadvantage not mentioned here is the potential for mechanical/electronic failure. Anytime you add another mechanism, such as SyncroRev, to an already complex transmission there's a higher possibility that something could malfunction. That's the only downside I can see to this technology.

David Muramoto
Editor-in-chief
Nissan Sport Magazine
Reply
Old Apr 5, 2009 | 04:41 PM
  #25  
OZ-Z's Avatar
OZ-Z
Registered User
 
Joined: Jan 2003
Posts: 295
Likes: 0
From: DELAWARE USA
Default Rev match sucks

The rev match gets real annoying. good thing you can turn it off. Besides the challenge of doing it yourself is all the fun. I learned when my VW bug had a broken clutch cable. Could drive the damn thing with no clutch after a while, Starts fron stop was tricky though
Reply
Old Apr 5, 2009 | 06:28 PM
  #26  
davidv's Avatar
davidv
Registered User
iTrader: (2)
 
Joined: Jun 2004
Posts: 42,753
Likes: 11
From: Tucson, AZ
Default

Originally Posted by OZ-Z
The rev match gets real annoying. good thing you can turn it off. Besides the challenge of doing it yourself is all the fun. I learned when my VW bug had a broken clutch cable. Could drive the damn thing with no clutch after a while, Starts fron stop was tricky though
LOL. I drove a VW Bug through the entire state of Oklahoma without a clutch. Downshifting was easy. Starting in first gear was a little rough.
Reply
Old Apr 5, 2009 | 09:18 PM
  #27  
WildWes's Avatar
WildWes
Registered User
iTrader: (11)
 
Joined: May 2008
Posts: 2,624
Likes: 0
From: Bay Area, SF
Default

Originally Posted by flintgauge
I always double clutch while shifting, and always pump the brakes during emergency stops to keep them from locking, and I always always signal with my hands so other drivers can clearly anticipate my lane changes!


owned by advancing technology....
+1
Reply
Old Apr 6, 2009 | 11:38 AM
  #28  
Salvatorey's Avatar
Salvatorey
Registered User
 
Joined: Jul 2007
Posts: 148
Likes: 0
From: NY
Default

The synchro-rev match feature is the best all around because it allows you to apply the break while simultaneously upshifting without having to hit the gas. This makes for easier operation while going around a sharp corner on the downshift.

Technically, the synchro-rev match is easier on your drivetrain aswell. Because the synchro rev always perfectly matches the engine speed to the transmission speed by blipping the throttle, it results in almost no clutch wear, engine drag, or rocky shifts.

Last edited by Salvatorey; Apr 6, 2009 at 11:41 AM.
Reply
Old Apr 27, 2009 | 08:24 AM
  #29  
STLZ's Avatar
STLZ
Banned
 
Joined: Sep 2002
Posts: 208
Likes: 0
From: St. Louis
Default

I don't see why you bought a vehicle with Syc-rev matching if you aren't going to use it???
Reply
Old Apr 27, 2009 | 10:19 AM
  #30  
spearfish25@gma's Avatar
spearfish25@gma
Thread Starter
Registered User
 
Joined: Mar 2009
Posts: 9
Likes: 0
From: Chicago
Default

The hostlity in this forum blows my mind. I see that I'm posting a question that 16 year olds whose 'daddy' bought their cars could never understand.

To reply to some of the above comments:

No, I don't lie about being 28. Moron.

As you can see from a few posts throughout this thread, some knowledgable individuals also note that there is an inherent benefit to double-clutching that SRM has nothing to do with. While it's not necessary to double-clutch, it does in fact remove additional work from the synchros.

Finally, STLZ...find me a Nissan 370Z with 6MT and the sport package that DOESN'T have sychro-rev matching. Doesn't exist. That being said, I really enjoy the SRM as it does a better job matching revs than I'll ever be able to accomplish.

Last edited by spearfish25@gma; Apr 27, 2009 at 10:22 AM.
Reply
Old Apr 27, 2009 | 10:43 AM
  #31  
Flee0588's Avatar
Flee0588
New Member
iTrader: (4)
 
Joined: Apr 2005
Posts: 1,218
Likes: 14
From: Chicago, IL
Default

I double clutch when skipping gears and sometimes going from 1st to 2nd, saves your syncros. Double clutching is not completely worthless like a lot of people assume. That being said I've driven the Z clutchless plenty of times just for the hell of it. If you enjoy manually shifting and you can rev match WELL, then go for it. The strain on the trans compared to SRM should be negligible. But overall the new automatic matching system will be easier on the trans.
Reply
Old Apr 27, 2009 | 11:01 AM
  #32  
Sensi09's Avatar
Sensi09
Sponsor
Works Concepts
 
Joined: Jul 2006
Posts: 3,029
Likes: 1
From: So Cal
Default

With modern synchros, there's no need to double clutch, so in terms of wear, there should be no appreciable difference.

With that said, I do enjoy double clutching in certain gears, especially into 2nd gear. Just as fast as a regular rev-match downshift IMO and tends to be consistently smoother for myself as it "flows" a little more. Generally I'll double clutch when moving down multiple gears or going into a low gear.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
sherm
Engine & Drivetrain
15
Apr 11, 2020 05:21 PM
sales@czp
Engine
33
Sep 23, 2019 03:30 PM
EnjukuRacing
Engine
0
Sep 30, 2015 06:55 AM
Tochigi_236
Feedback & Suggestions for Our Forum
8
Sep 27, 2015 03:40 PM




All times are GMT -8. The time now is 05:45 PM.