06 sti sychros

cliff257 · 08-02-2006, 07:47 AM

my 04 sti sychros are going out in 4th and 5th and was wondering if anybody had heard anything about the 06 sti sychros being carbon coned and if they are any better or not. If so i would like to replace mine with the 06's.

***evilSTi7*** · 08-02-2006, 10:16 AM

^^^havn't heard anything like that.

**Turninconcepts.com** · 08-02-2006, 01:00 PM

I have not heard anything about the 06 synchros being different. Best bet would be to see if a dealer has different part numbers listed for them, and that would at least give a clue that they are different.

My 4th synchro is starting to go, and I'm starting to put together going with a new tranny setup because of it.

Pitcherman · 08-02-2006, 01:08 PM

Put mine in the shop for the second fourth and fifth syncros......got my fingers crossed that the 100k extended warrenty will cover it. I have heard a couple of places that the 06's got better 4th and 5th and 6th syncros....but not from anyone official.

pantag · 08-02-2006, 01:15 PM

Quote:

Originally Posted by cliff257

my 04 sti sychros are going out in 4th and 5th and was wondering if anybody had heard anything about the 06 sti sychros being carbon coned and if they are any better or not. If so i would like to replace mine with the 06's.

I've also heard and read in this forum that the '06 synchros in 4th, 5th and 6th gear are carbon in order to prevent grinding. I have no links to post unfortunately.

karr1008 · 08-02-2006, 01:17 PM

Quote:

I've also heard and read in this forum that the '06 synchros in 4th, 5th and 6th gear are carbon in order to prevent grinding. I have no links to post unfortunately.

Correct.

**wdb** · 08-02-2006, 06:26 PM

There are many, many, many accounts of '06 4-5-6 synchros being upgraded. Here's a starting point:

List of differences between 2005 & 2006 STi

cliff257 · 08-02-2006, 08:33 PM

are you sure about the synchros though? I think my buddy researched the part numbers and they are all the same. not positive though i will research this tomorrow.

CFar · 08-03-2006, 06:23 PM

5 & 6 are "upgraded" from what I hear to carbon...however those are the two worst gears in my box. Usually always crunch on a normal shift the first time after starting the car

NightriderWRX · 08-03-2006, 07:00 PM

4,5,6 are carbon

**wdb** · 08-05-2006, 09:59 AM

Quote:

Originally Posted by cliff257

are you sure about the synchros though? I think my buddy researched the part numbers and they are all the same. not positive though i will research this tomorrow.

What did you find out? Also does anyone know if Subaru does "slipstream" upgrades, replacing one part with another without changing the part number?

cliff257 · 08-05-2006, 05:44 PM

well i called the parts place and they had to call the help line to find anything out. but what i did find out is that for 04 05 06 they all now have the same part number so i think they are doing what you called "slipstream." also i know that they do "slipstreaming" because they have done that with wheel bearings and a couple other parts.

scubbySTIve · 08-05-2006, 05:49 PM

havent heard that...but my friend with his 06 just recently took his in becuz his 2nd and 3rd synchros were bad

Stee · 08-05-2006, 07:10 PM

The occasional 'crunch' downshifting from 5th to 4th in my '04 STi is pretty much non-existent in my '06.

However, I did have to slow down my 1st to 2nd shifts ever-so-slightly in the '06, most likely due to the factory short shifter.

cliff257 · 08-08-2006, 12:05 PM

The 06 sti does have the carbon reinforced synchros. Rallispec has them for $25 a peice. These are for the 4th,5th and 6th gear synchros. The carbon is to better hold the heat.

08-02-2006, 07:47 AM	#1
cliff257 Junior STI Driver Car: 04 sti/08 335xi. Fav Mod: doug topspeed Location: spartanburg, sc Posts: 178 IWSTI Addict since: May 2006 Trader Rating: (1)	06 sti sychros my 04 sti sychros are going out in 4th and 5th and was wondering if anybody had heard anything about the 06 sti sychros being carbon coned and if they are any better or not. If so i would like to replace mine with the 06's. This ad is not endorsed by this member. Please register or login to hide this ad.

08-08-2006, 12:05 PM	#15
cliff257 Junior STI Driver Car: 04 sti/08 335xi. Fav Mod: doug topspeed Location: spartanburg, sc Posts: 178 IWSTI Addict since: May 2006 Trader Rating: (1)	The 06 sti does have the carbon reinforced synchros. Rallispec has them for $25 a peice. These are for the 4th,5th and 6th gear synchros. The carbon is to better hold the heat. This ad is not endorsed by this member. Please register or login to hide this ad.

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08-02-2006, 10:16 AM	#2
*evilSTi7* The Hoff Fan Club, member #001 Car: 05 WRB/Gold Fav Mod: Hood Scoop Homer Location: Where ever The Hoff is! Posts: 10,394 IWSTI Addict since: Jul 2004 Trader Rating: (4)	^^^havn't heard anything like that.

08-02-2006, 01:00 PM	#3
Turninconcepts.com Authorized Vendor Car: 04/08STI 95SVX 86E30 Posts: 5,503 IWSTI Addict since: Jul 2003 Trader Rating: (54)	I have not heard anything about the 06 synchros being different. Best bet would be to see if a dealer has different part numbers listed for them, and that would at least give a clue that they are different. My 4th synchro is starting to go, and I'm starting to put together going with a new tranny setup because of it.

08-02-2006, 01:08 PM	#4
Pitcherman STI Master Car: 04 JVP STi Fav Mod: Blitz NUR Spec R Location: B.F.E, Texas Posts: 7,985 IWSTI Addict since: Apr 2004 Trader Rating: (3)	Put mine in the shop for the second fourth and fifth syncros......got my fingers crossed that the 100k extended warrenty will cover it. I have heard a couple of places that the 06's got better 4th and 5th and 6th syncros....but not from anyone official.

08-02-2006, 06:26 PM	#7
wdb dances with roads Car: 2005 CGM STi Posts: 5,188 IWSTI Addict since: Apr 2005 Trader Rating: (8)	There are many, many, many accounts of '06 4-5-6 synchros being upgraded. Here's a starting point: List of differences between 2005 & 2006 STi

08-02-2006, 08:33 PM	#8
cliff257 Junior STI Driver Car: 04 sti/08 335xi. Fav Mod: doug topspeed Location: spartanburg, sc Posts: 178 IWSTI Addict since: May 2006 Trader Rating: (1)	are you sure about the synchros though? I think my buddy researched the part numbers and they are all the same. not positive though i will research this tomorrow.

08-03-2006, 06:23 PM	#9
CFar Professional STI Racer Location: NOVA Posts: 634 IWSTI Addict since: Jun 2006 Trader Rating: (2)	5 & 6 are "upgraded" from what I hear to carbon...however those are the two worst gears in my box. Usually always crunch on a normal shift the first time after starting the car

08-03-2006, 07:00 PM	#10
NightriderWRX Junior STI Driver Posts: 58 IWSTI Addict since: Jun 2006 Trader Rating: (0)	4,5,6 are carbon

08-05-2006, 05:44 PM	#12
cliff257 Junior STI Driver Car: 04 sti/08 335xi. Fav Mod: doug topspeed Location: spartanburg, sc Posts: 178 IWSTI Addict since: May 2006 Trader Rating: (1)	well i called the parts place and they had to call the help line to find anything out. but what i did find out is that for 04 05 06 they all now have the same part number so i think they are doing what you called "slipstream." also i know that they do "slipstreaming" because they have done that with wheel bearings and a couple other parts.

08-05-2006, 05:49 PM	#13
scubbySTIve Professional STI Driver Car: 05 CGM STi Location: centennial, CO Posts: 473 IWSTI Addict since: Feb 2006 Trader Rating: (0)	havent heard that...but my friend with his 06 just recently took his in becuz his 2nd and 3rd synchros were bad

08-05-2006, 07:10 PM	#14
Stee Spec C Club Car: 2008 Fitrari Red Fav Mod: Getting 40mpg Location: North Jersey Posts: 1,534 IWSTI Addict since: Jan 2004 Trader Rating: (8)	The occasional 'crunch' downshifting from 5th to 4th in my '04 STi is pretty much non-existent in my '06. However, I did have to slow down my 1st to 2nd shifts ever-so-slightly in the '06, most likely due to the factory short shifter.