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Old 07-12-2001, 09:06 PM   #1
Necromancer
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Member#: 477
Join Date: Oct 1999
Location: Vancouver
Vehicle:
GC4 -> GGA -> GM6
Yeah, that's about right.

Default The Mystery of the Self Healing Wheel Bearing and Other Tales (pics)

OK ... as you all know bobski, mcgyver, bgsntth, skywalker, wackit, and myself were at the Thunderhill track day on July 3 ...

The next morning I was on a plane to Vancouver, so I couldn't participate in the "postgame": http://www.i-club.com/forums/showthr...threadid=68409

So you may have heard that me and my Rex hopped aboard the Flatbed of Shame around 2:30 (thanks to a generous Passat driver / AAA Plus member who has seen the light and is buying a WRX this week! ).

Anyway, I was drifting around Turn 2 (long left sweeper), playing at the limit of adhesion and showing my passenger, a Scirocco driver who begged for a ride, a good time...

Just past the apex the car started making a loud grinding sound that got worse as I flicked around Turn 5. I took the shortcut to the pits immediately and pulled in. The grinding got slower and irregular as I slowed down ... and I thought, "Oh crap ... the gods of Subaru have paid me a visit today ..." 100 degree weather, hot brakes, and race tires does not a good cocktail make...

Skywalker and Wackit both rode in my car and confirmed it was the right rear wheel bearing.

Just before loading onto the flatbed, we changed the tires back to street tires to avoid any "questions" from SOA. The plan was to tow the maximum distance for free under AAA Plus (100 miles), and then pray I can drive to Santa Cruz Subaru without the hub seizing. So I got dropped off at Fairfield and prepared for a long drive home.

I gingerly accelerated onto the freeway to find ... no more grinding sound!! "What the hell?!?!" I thought -- and the ride was smooth for the next 100 miles to Cupertino.

So I have a theory. Could it be possible (and technical types please give me some feedback here) that the incredibly hot track melted my tires, causing them to become so uneven and embedded with gravel that they could make a noise as horrible as a blown wheel bearing?

Here's what my tires looked like after I got home and CLEANED them:
<img src="http://www.choberi.com/impreza/THill-010703/MoltenTire.jpg">

Can somebody say time for a shave????

What do you guys think??

--------
Anyway, it was an otherwise fun track day. Here's some other pics. Sorry about the black and white ones -- that's what you get when you lend your camera to somebody to take photos with you.

The only WRX's in attendance were WAGONS!!!
<img src="http://www.choberi.com/impreza/THill-010703/Wagons.jpg">


Camp Subaru!!! (thanks to Bob's canopy!)
<img src="http://www.choberi.com/impreza/THill-010703/CampSubaru.jpg">


McGyver was looking great out on track...
<img src="http://www.choberi.com/impreza/THill-010703/McGyver.jpg">
<img src="http://www.choberi.com/impreza/THill-010703/McGyverDriving.jpg">


Skywalker was running on 100% pure Jedi power, past the Esses:
<img src="http://www.choberi.com/impreza/THill-010703/Skywalker.jpg">
<img src="http://www.choberi.com/impreza/THill-010703/Bill.jpg">


Here's gakster's "fair weather" car.
<img src="http://www.choberi.com/impreza/THill-010703/GakWee.jpg">


Flower power!
<img src="http://www.choberi.com/impreza/THill-010703/Beetle.jpg">


Carlos and Karla shared the GSR ... aww how sweeet!
<img src="http://www.choberi.com/impreza/THill-010703/CarlosAcura.jpg">


Me coming around the Esses...
<img src="http://www.choberi.com/impreza/THill-010703/MeEsses.jpg">

... there's that pesky Type R behind me again!
<img src="http://www.choberi.com/impreza/THill-010703/MeTurn5.jpg">


I brought some temperature sensitive caliper paint to try...
<img src="http://www.choberi.com/impreza/THill-010703/CaliperPaint.jpg">


Ever wonder what a WRX wagon looks like with GT wheels?
<img src="http://www.choberi.com/impreza/THill-010703/WithWheels.jpg">


All good things...
<img src="http://www.choberi.com/impreza/THill-010703/OntoFlatbed.jpg">

Not something you see every day...
<img src="http://www.choberi.com/impreza/THill-010703/RearViewFlatbed.jpg">


.........

And finally, a pic from the Vancouver meet on July 8... can anybody ID this car? (the bee seems to like the yellow!)
<img src="http://www.choberi.com/impreza/THill-010703/YellowBee.jpg">
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Last edited by Necromancer; 07-14-2001 at 03:22 PM.
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Old 07-12-2001, 09:57 PM   #2
mcgyver
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Join Date: Jun 2000
Location: Novato, CA
Vehicle:
MY98 RS w/WRX Conv
I-Speed Tech

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Nice Pics Joe!

Fixed itself, HUH?

I had a Transmission in my '90 Bronco do that once. Leaked out all the fluid out. The worst part was it was in Wendover, NV/UT Border. That place is Cursed, I tell you! I've always broken something as I pass through there.

Oh Yeah, next morning filled the tranny with fluid, didn't leak at all for the next 600 mile trip home. But ofcourse 6 months later, it didn't fix itself in the middle of the Nevada desert on my way to Vegas for a Wedding But, that's a different story

Joe, is it possible that all the rocks/rubber made the tire out of balance & oblonged. Weird though, cause it did it at low speed too.

Good Luck,
Adam
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Old 07-12-2001, 11:51 PM   #3
bobski
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Join Date: Oct 1999
Chapter/Region: BAIC
Location: Tracy/San Jose, CA
Vehicle:
2006 VF-39 WRX Wagon
OBP

Thumbs up

Great pics Joe.

Well, bgsntth thought he had a bearing problem too. I heard scraping noises from his car as he drove off. Good news is that he told me it's not the bearings. bgsntth, you wanna chime in on what happened with your wagon?

Wagon power!!
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Old 07-13-2001, 02:44 AM   #4
Necromancer
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Join Date: Oct 1999
Location: Vancouver
Vehicle:
GC4 -> GGA -> GM6
Yeah, that's about right.

Default

Well, bgsntth and I were the ones running R-Compound tires that day...

hmmmmmmmmmmmm.....

Anybody have any advice?
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Old 07-13-2001, 02:55 AM   #5
mcgyver
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Member#: 1655
Join Date: Jun 2000
Location: Novato, CA
Vehicle:
MY98 RS w/WRX Conv
I-Speed Tech

Wink

Hmmmmmmm,

(2) WRX Wagons, both with symptoms of BAD wheal bearings, both running R-Compound Tires.

Hmmmmmmm,

I don't know

-Adam
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Old 07-13-2001, 12:12 PM   #6
bgsntth
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Join Date: Jan 2001
Location: Marin-land of hippy republican
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05 OB XT
Blk

Default

Yep, after seeing my cars twin get taken away on the ambulance, and my WRX making metal grinding noises after the next session, I too thought bearings. Turns out my grinding was the brakes-the EBC reds wore to the backing plates, hence metal to metal. Unfortunately, with only 600 street miles on the pads prior to the trip to T-Hill, I was not even thinking pads. I just assumed bearings. Even had my local Porsche mechanic visually check the pads when I got home. Looked worn, but with some material left.

Brought it to Marin Subaru, who diagnosed the problem. I should have taken it back then, however, and bought the rotors from subaruparts for $50.36 a piece and had my mechanic do the work. Marin is going to charge me $380, using my old OE pads. Ouch!

I now feel it is my duty to abuse the SOA wear warranty 3/36. Anyway, while the EBC's performed well, I'm inclined to stick with the OE pads from here on out. Joe, Bob how did your pads hold-up? Wear? Fade?

I was really happy with the strut/spring package, worked very well. I get my car back tonight, and hope the bearings were not part of the equation. If so, the Redline CV-2 extreme pressure grease might be a solution?

Regardless, it was a fun day and was very impressed with the driving prowess of my Subaru brethern. Good showing from the Subaru contingent!
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Old 07-13-2001, 01:10 PM   #7
Necromancer
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Join Date: Oct 1999
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Vehicle:
GC4 -> GGA -> GM6
Yeah, that's about right.

Default

haha! The infamous Thunderhill brake endurance test! Didn't know you needed rotors too -- wow.

As far as I'm concerned the "wear warranty" is also known as Free Brakes and Clutch for the first 36,000 miles! I'm getting a new clutch a bit early, so the days of ultra smooth driving by not caring about the clutch are over.

(Disclaimer: there IS actually a factory defect with my clutch -- that old familiar cold start clutch shudder. And it's not like I'm riding my brakes into oblivion either.)

So to answer your question, bgsntth, the stock pads handled it pretty well. Then again I never go for more than 4 laps of the 3.3-mile track at a time in that kind of weather. On our track day, I could usually start to feel fade around Turn 12 of the 3rd lap (Turn 10 really heats up your brakes).

There is too much brake boost, even though the pedal is still pretty linear (except when there is still some residual boost in the plenum -- watch out!). There is too much steering wheel assist compared to the old car. And getting the car to rotate on its nose is difficult at best. I really wish I had a chance to ride in your car, bgsntth, and check out the STi suspension. Any chance we could meet up before I leave the country?
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Old 07-13-2001, 01:25 PM   #8
skywalker
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Nice Pics!!!

Could the tires have been rubbing. There was so much junk on the tires maybe after a while of accumalating all the tar and rubber they just got to big at a certain point and just started rubbing. Probably not, but a thought...
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Old 07-13-2001, 03:36 PM   #9
bgsntth
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Location: Marin-land of hippy republican
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05 OB XT
Blk

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Yes, T-Hill does have a penchant for brake pads. I think the main straight chicane also creates more wear. So, there are about 4 areas on the track where you brake heavily from 85-100mph to around 30-50mph.

Joe, I wonder if the grinding was attibutable to the rocks embedded in your BFG gumballs? Amazing how much more crud they picked-up compared to my RA1s.

I was really happy with the suspension. Not really that stiff, but very neutral with a lot less body roll. Plus it absorbed apex curbs w/o upsetting the chassis one bit. I was hitting 9-10-11-5 will absolute abandon. Just let me know when you are Marin and you can stop by for your own sampling and evaluation.

Wackit, you is damn fast, though one is always more inclined to breech the limits with a trailer in the paddock I had a damn fun time chasing you around, and thanks for revealing the proper line on 5.

Martin

Last edited by bgsntth; 07-13-2001 at 03:38 PM.
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Old 07-13-2001, 08:33 PM   #10
glenstiles
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Silver, baby, silver

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Hey Joe,

Its the scirocco guy, you gave me a ride in your rex until we had the pull off for that funny noise. Glad to hear its not the wheel bearings. Sure sounded like it. Some casualties that day was a type r with a blown pressure plate and a passat with very expensive sounding valvetrain noises.

You have a Pretty damn quick ride, and it handled the track without drama (until that 'bearing' noise cropped up.) I'm impressed. I loved keeping up with that ITR in a wagon, that was cool. Those tires are toast, eh? Combination of high 100+ degree heat on the track, 3100 lbs car plus driver and passenger, and tearing up the track in AWD form= torn up tires. They sure made an ugly noise around turn two... I must have worn about a third of the tread off of my yoko avs-i tires on my rocco, it was so hot that the rubber was peeling like layers of an onion.

Glen
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Old 07-15-2001, 02:02 AM   #11
Necromancer
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Yeah, that's about right.

Default

Well I got my car back from Santa Cruz yesterday and the wheel bearing seems fine. Clutch all fixed, strut replaced. 's all good...
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