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Old 11-27-2021, 08:41 AM   #1
teamslow
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Member#: 523852
Join Date: Apr 2021
Default Considering buying an 05 sti that has 2 issues that make me a bit nervous...

Last time i posted up askin for opinions on a car I was buying I appreciated the input, but the car turned out to be much worse than the ad made it seem so I bailed.

Now im looking at another one that's in not the greatest shape but may end up priced accordingly. There are 2 issues that i think could be signs of real costly repairs.

Shifting into 5th i noticed that the stick will easily go past 5th (to the right), but doesnt have any issue going into 5th once you find it. Im wondering if this is likely an issue with the shifter assembly/bushings and not the actual trans?

the other issue is a whine that based on my googling could be pinion bearings in the front diff. you only hear it when you clutch in and are slowing down, its not loud, but like most noises i suspect it will get louder until something eventually breaks and causes damage...

any thoughts appreciatized...

thanks
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Old 11-27-2021, 10:41 AM   #2
snow_bound26
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Member#: 395793
Join Date: Jul 2014
Chapter/Region: Tri-State
Location: SLC and Lake Placid
Vehicle:
2005 92x Aero
Beige

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When there's that much slop in the shifter it's probably the roll pin in the gear selector shaft. It's a PITA ass to get to, but you can replace it with a bolt and nut rather than using a new roll pin. If that doesn't fix it then it's more likely internal. I had this issue when swapped an 05 6 speed into my car. Replacing that reduced slop by 50%. But unfortunately I'm finishing out my trans was more neglected/mistreated than I had hoped. I would still replace the bushings, just don't expect them to reduce movement like that very much.

As for whine, the STi gears are helical, but still quite aggressive and have a bit of whine to them normally. Without being in the car it's going to be hard for any of us to say if it's excessive or not. Do you know if the current owner has replaced any of the driveline bushing with stiffer options? This will make the whine more pronounced.
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Old 11-27-2021, 12:06 PM   #3
xtremewlr
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Join Date: Jul 2021
Chapter/Region: SWIC
Location: Tucson, AZ
Vehicle:
2006 STI
WR Blue

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Yeah, I agree with @snow_bound26, the 6 speed STI trans is naturally whiny, especially in the GD chassis. GDs seem to have less sound deadening material than the newer cars. You will mostly notice it at slower speeds. But, they are extremely strong transmissions, especially compared to the glass-like 5 speeds. I think what you are feeling with the shifter is just play in the shifter bushings and maybe not being used to the 6 speed transmission shift pattern. If it goes easily into all gears, then it's not a concern. New shifter bushings should clean most of that up and is something you could do yourself. Change the gear oil as well and that trans should be fine.
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Old 11-27-2021, 12:32 PM   #4
teamslow
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thanks a lot for the info! I did some googling on what you guys mentioned and i think im gonna make an offer and see what happens

thanks again!
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Old 11-27-2021, 12:34 PM   #5
xtremewlr
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WR Blue

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Quote:
Originally Posted by teamslow View Post
thanks a lot for the info! I did some googling on what you guys mentioned and i think im gonna make an offer and see what happens

thanks again!
Good luck!
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Old 11-27-2021, 12:34 PM   #6
K3rm1tth3fr0g
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Join Date: Nov 2019
Chapter/Region: NWIC
Location: Greater Seattle Area
Vehicle:
2002 WRX - Link ECU
being installed :)

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I'd get a pre purchase Inspection by a shop who knows the WRX/STi.

They'll likely be able to tell you if the whine is normal. The stock 6MT with OEM clutch and flywheel does not whine that much. The 5mt whines a lot more in my experiences
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Old 11-27-2021, 12:41 PM   #7
xtremewlr
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WR Blue

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Quote:
Originally Posted by K3rm1tth3fr0g View Post
I'd get a pre purchase Inspection by a shop who knows the WRX/STi.

They'll likely be able to tell you if the whine is normal. The stock 6MT with OEM clutch and flywheel does not whine that much. The 5mt whines a lot more in my experiences
While I haven't driven a GD WRX with the 5MT, my 06 STI 6 speed is pretty loud at slower speeds. It shifts perfectly and doesn't have any issues. So I would disagree with your statement on the 6MT not being very loud. It's pretty noticeable, even with a healthy transmission and fresh fluids.
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Old 11-27-2021, 01:10 PM   #8
K3rm1tth3fr0g
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Location: Greater Seattle Area
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2002 WRX - Link ECU
being installed :)

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Quote:
Originally Posted by xtremewlr View Post
While I haven't driven a GD WRX with the 5MT, my 06 STI 6 speed is pretty loud at slower speeds. It shifts perfectly and doesn't have any issues. So I would disagree with your statement on the 6MT not being very loud. It's pretty noticeable, even with a healthy transmission and fresh fluids.
Every 5mt I've heard has been louder *shrug*
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