Welcome to the North American Subaru Impreza Owners Club Monday April 21, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
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 10-04-2012, 10:54 PM   #1
justice2002
Scooby Newbie
 
Member#: 332102
Join Date: Sep 2012
Default new gears or sti transmission?

So I know there's a lot of threads relevant to this but in all the reading I could not find an answer to my problem.
I'm building an 02 wrx and heard rumors that the tranny is a glass box if you venture too far above 300whp, grandid driving habits are a big factor. I've read up on STi swaps and just putting stronger gears in, both are costly and a pain in the ***, but which is truly more reliable?
* Registered users of the site do not see these ads.
justice2002 is offline   Reply With Quote
Old 10-04-2012, 11:17 PM   #2
rudymcskoody
Scooby Specialist
 
Member#: 257618
Join Date: Sep 2010
Chapter/Region: TXIC
Location: lewisville, tx
Vehicle:
2006 wrx
aspen white

Default

Quote:
Originally Posted by justice2002
So I know there's a lot of threads relevant to this but in all the reading I could not find an answer to my problem.
I'm building an 02 wrx and heard rumors that the tranny is a glass box if you venture too far above 300whp, grandid driving habits are a big factor. I've read up on STi swaps and just putting stronger gears in, both are costly and a pain in the ***, but which is truly more reliable?
This is highly debated. To be honest, mine blew at stage 2 power levels. I don't think it was my driving. Some say a heavy clutch will do it, witch I have. Could have been from the previous owner. I don't know for sure.

I wouldnt worry about it too much. I've heard of people with decent power and never had a problem. Just know it could happen and be prepared.

There are a few options. 6 speed is a good one. Finding all the parts you need can be a hassle, bit they are super strong. I've heard of people doing the hole swap for under 4k doing all the labor themselves.

Ppgs are vary strong, but pricey. I, myself didn't have the time to find all the things I needed for the 6 speed swap as my wrx is my only car and didn't have the money for ppgs. I ended up using the 08+ gear set. Cheaper then the other options and said to hold 400 whp ok. I don't plan on getting to 400whp so this option suited my needs. I had Cobb tuning do the work, got it back in a little less than a week.

At the moment I have an act heavy duty clutch, 300whp, 350wtq. I've had the new gear set for almost a year with no problems. Just don't forget to change the little speedo gear like I did. Its a little off but no biggie.

Hope this helped.
rudymcskoody is offline   Reply With Quote
Old 10-04-2012, 11:27 PM   #3
justice2002
Scooby Newbie
 
Member#: 332102
Join Date: Sep 2012
Default

Oh ok, I didn't know the 08+ gears were interchangeable. Ya, I don't plan to go over 400hp. And I still have the stock clutch in there for now. About how much did it cost for COBB to do that for you? If you don't mind me asking.
justice2002 is offline   Reply With Quote
Old 10-05-2012, 12:08 AM   #4
rexblake
Scooby Specialist
 
Member#: 178426
Join Date: Apr 2008
Location: FoCo
Vehicle:
2010 Audi S4
Black

Default

An RA gear set will hold 400whp, I ran mine for years with no issues. PPGs are not worth the money, an STI stock tranny will hold more power and be the same price if not cheaper.
rexblake is online now   Reply With Quote
Old 10-05-2012, 12:21 AM   #5
DHRDAN
Scooby Specialist
 
Member#: 204358
Join Date: Feb 2009
Chapter/Region: SCIC
Location: Santa Paula, CA.
Vehicle:
01 2.5RS W/ EJ257
Black

Default

There are 2 reasons why the NON-sti tranny's fail.

1. The gears.

2. The tranny casings themselves.



All decent builders i've talked to say: "ALWAYS go STI," if you are going to put serious power through them. You can get away with aftermarket gears, but from what i understand.. the casing itself is what FLEX's under HUGE load... which breaks the gears. You need the gears to be strong, but you also need the Tranny casing to also hold the power.


Ask in the tranny forum.. they know far more.
DHRDAN is offline   Reply With Quote
Old 10-05-2012, 02:03 AM   #6
sc00by4life
Scooby Guru
 
Member#: 97135
Join Date: Sep 2005
Chapter/Region: NWIC
Location: Bothell
Default

Quote:
Originally Posted by rexblake View Post
An RA gear set will hold 400whp, I ran mine for years with no issues. PPGs are not worth the money, an STI stock tranny will hold more power and be the same price if not cheaper.
nope.

RA gears are only marginally stronger than the stock 5 speed gears.

PPG 5 speed would be just as fine as the 6 speed.
sc00by4life is online now   Reply With Quote
Old 10-05-2012, 02:14 AM   #7
sfk1412
Scooby Newbie
 
Member#: 290974
Join Date: Aug 2011
Chapter/Region: Tri-State
Location: Houtzdale, PA
Vehicle:
2005 WRX Wagon
PSM

Default

I recently had the same question and also searched and searched. Finally I PM'd AndrewTech and told them I.couldn't afford PPGs and what a good option would be. This was their reply: " the 08 plus legacy gears, ra gears, and 09 plus gears are very similar with RA. Only strong stock gearset is the 6 speed." However I know alot of people that got there trannys rebuilt with the legacy gt gears and they seem to hold really well which is probably the route ill go being that it's the cheapest gearset and I don't plan on making more then 350~whp/Tq. Unless I run into a spare 5g for PPGs
sfk1412 is offline   Reply With Quote
Old 10-05-2012, 04:26 AM   #8
rexblake
Scooby Specialist
 
Member#: 178426
Join Date: Apr 2008
Location: FoCo
Vehicle:
2010 Audi S4
Black

Default

Quote:
Originally Posted by sc00by4life View Post
nope.

RA gears are only marginally stronger than the stock 5 speed gears.

.
The old ones perhaps, the new ones are great. Mine ran 400whp plus for 4 years and still shifted smoother than my stock one ever did. I know they are strong.
rexblake is online now   Reply With Quote
Old 10-05-2012, 05:45 AM   #9
k04sti
Scooby Specialist
 
Member#: 171773
Join Date: Feb 2008
Chapter/Region: South East
Location: tampa, fl
Vehicle:
04 wrx sti
jbp dom 3 xtr w meth!

Default

BTW its tq that breaks transmissions not hp
k04sti is offline   Reply With Quote
Old 10-05-2012, 06:48 AM   #10
Unabomber
Big Ron
Moderator
 
Member#: 18062
Join Date: Apr 2002
Chapter/Region: MAIC
Location: I can save you a ton of cash
Vehicle:
on car parts so PM
me b4 j00 buy

Default

I am the Lord of the Transmission Forum. It is where I live and breathe. The amount of useful information given here so far hovers around 9%. Do the following exactly:

1. Choose Start-->Shutdown on your computer.
2. Dial (240) 683-1000
3. State your budget, your car and its mods, and your car's use
4. Converse about the options

Buying a gearset is a no ****ing around proposition. Take it as such. If you don't, you might as well send me 1/2 the projected cost and do nothing as at least my advice saved you 50%.
Unabomber is offline   Reply With Quote
Old 10-05-2012, 06:57 AM   #11
rudymcskoody
Scooby Specialist
 
Member#: 257618
Join Date: Sep 2010
Chapter/Region: TXIC
Location: lewisville, tx
Vehicle:
2006 wrx
aspen white

Default

Quote:
Originally Posted by justice2002
Oh ok, I didn't know the 08+ gears were interchangeable. Ya, I don't plan to go over 400hp. And I still have the stock clutch in there for now. About how much did it cost for COBB to do that for you? If you don't mind me asking.
They are not exactly interchangeable. I font mind telling you what Cobb charged me but they might. Give them a call and will be happy to give you a quote. I can tell you its the cheapest option.
rudymcskoody is offline   Reply With Quote
Old 10-05-2012, 07:12 AM   #12
Jack
Add Lightness
Moderator
 
Member#: 13699
Join Date: Dec 2001
Chapter/Region: NESIC
Location: Hopkinton, MA
Vehicle:
2007 Lotus Elise
(From General)

Default

Hmmmmm........I would have said to just call Andrewtech and ask them.....but some people have their telephone number in their head (see post 10).

Call them. Ask them.
Jack is offline   Reply With Quote
Old 10-05-2012, 08:20 AM   #13
Uncle Scotty
Scooby Guru
 
Member#: 16200
Join Date: Mar 2002
Vehicle:
OK Houston
we have an Uncle

Default

and this is cross posted
Uncle Scotty is offline   Reply With Quote
Old 10-05-2012, 08:40 AM   #14
rudymcskoody
Scooby Specialist
 
Member#: 257618
Join Date: Sep 2010
Chapter/Region: TXIC
Location: lewisville, tx
Vehicle:
2006 wrx
aspen white

Default

Quote:
Originally Posted by Jack ffr1846
Hmmmmm........I would have said to just call Andrewtech and ask them.....but some people have their telephone number in their head (see post 10).

Call them. Ask them.
That's because they are lovers. Sorry I couldn't keep the secret anymore.
rudymcskoody 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 12:20 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.