Welcome to the North American Subaru Impreza Owners Club Saturday April 29, 2017
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC General > General Community

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 04-21-2017, 07:43 AM   #26
rtv900
Scooby Specialist
 
Member#: 428511
Join Date: Aug 2015
Location: philadelphia
Vehicle:
2016 STI

Default

Quote:
Originally Posted by SoapBox View Post
That's assuming that he puts the car in neutral and steps off the clutch before quickly shifting into reverse, which would seemingly be rare.

More likely, he's got the clutch in, so the input shaft isn't seeing even idle RPM.
I'd say 90% of the time I go to reverse is from idling in a spot, clutch out in neutral, and then clutch in and throw it right in reverse. No grind which is why I know it is synchronized.
My truck has no reverse synchro. It grinds like hell if I do that (from a dead stop!!). I have to either clutch in and wait 4 or 5 seconds (annoying as hell), or simply flick the shifter in 3rd for a half second to use it's synchro to stop the shaft and then jump right over to reverse. Works perfectly.
Reverse being spur gears is totally irrelevant.

There's no way in hell he's going to damage a trans by dropping it in going a few mph
* Registered users of the site do not see these ads.
rtv900 is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 04-21-2017, 08:26 AM   #27
SoapBox
Scooby Guru
 
Member#: 204578
Join Date: Mar 2009
Chapter/Region: MAIC
Location: Philadelphia
Vehicle:
S54 E46, N54 E82,
N55 E84, AKA REX8

Default

Quote:
Originally Posted by rtv900 View Post
I'd say 90% of the time I go to reverse is from idling in a spot, clutch out in neutral, and then clutch in and throw it right in reverse.
I find thatodd. It seems most people would be using reverse in one of two ways:

1. Starting car; so clutch in, start, shift to reverse from whatever gear you parked in. So no neutral/clutch out time.

2. Pulling in somewhere, in gear; clutching in, braking to a stop, shifting to reverse. So again, no in neutral, clutch out time.

Edit: I suppose some portion of the time I'm starting the car and letting it warm up a bit, so then I'm in neutral with the clutch out. But certainly not anything close to 90% of the time.
SoapBox is offline   Reply With Quote
Old 04-21-2017, 08:29 AM   #28
SoapBox
Scooby Guru
 
Member#: 204578
Join Date: Mar 2009
Chapter/Region: MAIC
Location: Philadelphia
Vehicle:
S54 E46, N54 E82,
N55 E84, AKA REX8

Default

Quote:
Originally Posted by Charlie-III View Post
I can't say I have ever heard of a synchro'd reverse either.
I've never owned a car with one either.
SoapBox is offline   Reply With Quote
Old 04-21-2017, 09:29 AM   #29
rtv900
Scooby Specialist
 
Member#: 428511
Join Date: Aug 2015
Location: philadelphia
Vehicle:
2016 STI

Default

Quote:
Originally Posted by SoapBox View Post
I've never owned a car with one either.
you must have never driven one without, because the difference is night and day and is unmistakable.
I don't know why people assume there's no synchro yet never hear a grind no matter what.

Start your car today and let it idle for 5 seconds with the clutch out in neutral.
Clutch in and immediately put it in reverse.

Does it grind?
If not it's got a synchro.
rtv900 is offline   Reply With Quote
Old 04-21-2017, 09:35 AM   #30
SoapBox
Scooby Guru
 
Member#: 204578
Join Date: Mar 2009
Chapter/Region: MAIC
Location: Philadelphia
Vehicle:
S54 E46, N54 E82,
N55 E84, AKA REX8

Default

You know what...I think you're right. Looks like even WRX 5 speeds have a reverse synchro, even though everyone (self included) would have told you otherwise. Straight cut gear, so it's loud, but does have a cone synchro.
SoapBox is offline   Reply With Quote
Old 04-21-2017, 01:12 PM   #31
jimbowrx
Scooby Newbie
 
Member#: 365370
Join Date: Aug 2013
Default

In the WRX and STIs, reverse is an idler gear, so you are physically slotting a gear between two gears, but you still have the synchronizer. The synchronizer is on the back of 5th gear in the 5MT gearbox and on the back of 6th gear on the 6MT gearbox.

Because reverse is an idler gear, the common misconception is that it's not synchronized. If it wasn't, you'd never be able to get it into reverse, because the input shaft doesn't stop spinning if the engine is running.

The WRX 5MT gearbox has a weak synchronizer, so many people wind up having to do the 'subaru shuffle' to get it into reverse...shift into first or fourth, blip the throttle, then into reverse.
jimbowrx is offline   Reply With Quote
Old 04-21-2017, 05:30 PM   #32
Abismo
Scooby Specialist
 
Member#: 99707
Join Date: Nov 2005
Chapter/Region: MWSOC
Location: Missouri
Vehicle:
2010 WRX (in spirit)
SWP

Default

Quote:
Originally Posted by jimbowrx View Post
so many people wind up having to do the 'subaru shuffle' to get it into reverse...shift into first or fourth, blip the throttle, then into reverse.
I remember this well haha.
Abismo is offline   Reply With Quote
Old 04-22-2017, 06:38 AM   #33
GDR
Scooby Specialist
 
Member#: 34924
Join Date: Apr 2003
Chapter/Region: SCIC
Location: Corona,Ca
Vehicle:
03 WRX Wagon
81 Scirocco S

Default

The reverse drive gear is cut straight into the input shaft.

The reverse driven gear is cut into the 1st/2nd selector sleeve on the output(pinion)shaft. This selector sleeve is fixed to the output shaft by a splined hub.

The reverse idler gear slides over and connects the 2. There are no synchronizers as the 2 gears are FIXED to their shafts.
GDR is offline   Reply With Quote
Old 04-22-2017, 11:16 AM   #34
SoapBox
Scooby Guru
 
Member#: 204578
Join Date: Mar 2009
Chapter/Region: MAIC
Location: Philadelphia
Vehicle:
S54 E46, N54 E82,
N55 E84, AKA REX8

Default

Quote:
Originally Posted by GDR View Post
The reverse drive gear is cut straight into the input shaft.

The reverse driven gear is cut into the 1st/2nd selector sleeve on the output(pinion)shaft. This selector sleeve is fixed to the output shaft by a splined hub.

The reverse idler gear slides over and connects the 2. There are no synchronizers as the 2 gears are FIXED to their shafts.
Read two posts up, there is a reverse synchro in both the 5 and 6 speed boxes. Part numbers and everything if you search for them.
SoapBox is offline   Reply With Quote
Old 04-22-2017, 11:31 AM   #35
wrxlaunch
Scooby Specialist
 
Member#: 181298
Join Date: May 2008
Chapter/Region: MAIC
Location: MAIC
Vehicle:
2015 WRX Limited
Lightning Red

Default

Need help putting gas in your car too?
wrxlaunch is offline   Reply With Quote
Old 04-24-2017, 02:33 PM   #36
bagwell
Scooby Newbie
 
Member#: 405467
Join Date: Nov 2014
Default

NASIOC is a joke - guy is asking a serious question and a-holes pounce, LOL, I'm out.

Last edited by bagwell; 04-27-2017 at 03:25 PM.
bagwell is offline   Reply With Quote
Old 04-24-2017, 02:38 PM   #37
WRelaX
Scooby Newbie
 
Member#: 447497
Join Date: May 2016
Default

Quote:
Originally Posted by bagwell View Post
NASIOC is pretty much a joke - guy is asking a serious question and a-holes pounce, LOL, I'm out.
Welcome to the forum
WRelaX is offline   Reply With Quote
Old 04-24-2017, 03:07 PM   #38
mishapopa
Scooby Specialist
 
Member#: 393629
Join Date: Jun 2014
Chapter/Region: W. Canada
Location: Calgary
Vehicle:
2015 WRX
WRB

Default

Quote:
Originally Posted by bagwell View Post
NASIOC is pretty much a joke - guy is asking a serious question and a-holes pounce, LOL, I'm out.
he's willingly and knowingly bashing his head on the wall. we're telling him to stop.
mishapopa is offline   Reply With Quote
Old 04-24-2017, 04:21 PM   #39
Schoat333
Scooby Newbie
 
Member#: 452248
Join Date: Aug 2016
Chapter/Region: MWSOC
Location: Cleveland Ohio
Vehicle:
2017 Base WRX
WRB

Default

Quote:
Originally Posted by bagwell View Post
NASIOC is pretty much a joke - guy is asking a serious question and a-holes pounce, LOL, I'm out.
a-holes? This isn't bad at all
Schoat333 is offline   Reply With Quote
Old 04-24-2017, 05:49 PM   #40
f4phantomii
Scooby Specialist
 
Member#: 58504
Join Date: Mar 2004
Chapter/Region: South East
Location: Ready to try OpenECU.org!!!
Vehicle:
2004 STi w/o wing
Aspen White / Silver

Default

Indeed. Probably shouldn't venture into Off Topic.
f4phantomii is offline   Reply With Quote
Old 04-24-2017, 07:20 PM   #41
Altephor
Scooby Newbie
 
Member#: 429442
Join Date: Sep 2015
Location: MA
Vehicle:
2016 WRX Limited
CWP

Default

Quote:
Originally Posted by bagwell View Post
NASIOC is pretty much a joke - guy is asking a serious question and a-holes pounce, LOL, I'm out.

Hold on I'm still searching the OP for a serious question.
Altephor is offline   Reply With Quote
Old 04-25-2017, 08:09 AM   #42
rtv900
Scooby Specialist
 
Member#: 428511
Join Date: Aug 2015
Location: philadelphia
Vehicle:
2016 STI

Default

Quote:
Originally Posted by bagwell View Post
NASIOC is pretty much a joke - guy is asking a serious question and a-holes pounce, LOL, I'm out.
you mean an erroneous question is posed, and then a few people disagree and through discussion arrive at a an accurate conclusion?

wow, good thing you decided to bail
What a terrible outcome
rtv900 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

All times are GMT -4. The time now is 09:38 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2017 Axivo Inc.
Copyright ©1999 - 2017, North American Subaru Impreza Owners Club, Inc.