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Old 10-05-2012, 11:07 AM   #26
KNS Brakes
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NASA does get some Subie's. We may get on up to the OctoberFast w/ the RS .

At TrackDaze and Chin where I normally go - no such thing.
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Old 10-05-2012, 11:08 AM   #27
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Quote:
Originally Posted by mav1c View Post
My '06 STI has seen many, many track miles with very little issues. Few small things (some my fault, some crap parts *cough* Grimmspeed AOS *cough*) here and there, but mostly very reliable. Finally started having overheating issues due to head gasket leak (I'm surprised it lasted this long), and it's currently being rebuilt. Keeping things pretty much the same, with a few small tweaks for reliability.

ARP head studs
Stock head gaskets
Killer B oil pickup and oil baffle
TGV deletes
Timing belt and pulleys
ACT clutch and flywheel
New water pump
Upgrade to '08+ oil pump
Water + Water Wetter + Subaru coolant additive
75W140 trans oil
Samco radiator hoses
Various other gaskets and seals that are needed, or are easily replaced while it's apart.
Conservative tune around 300WHP.

I'm sure I'm forgetting a few things, but this should be good for another 5 years of track days.

Will you guys be at the TrackDaze event @ VIR Nov 13-14?
I signed up but I may have to cancel.
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Old 10-05-2012, 11:11 AM   #28
mav1c
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Quote:
Originally Posted by WRXBrakes View Post
NASA does get some Subie's. We may get on up to the OctoberFast w/ the RS .

At TrackDaze and Chin where I normally go - no such thing.
What are you talking about? Last TrackDaze event both Paul and I had students in Subarus. And there were a couple others.
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Old 10-05-2012, 11:15 AM   #29
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What are you talking about? Last TrackDaze event both Paul and I had students in Subarus. And there were a couple others.
I think we used to have enough to have a Subaru 'section'
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Old 10-05-2012, 11:16 AM   #30
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Originally Posted by GrpB View Post
I'm curious what all the breakage talk is about? Except for engine failure at even moderate power levels, which is alarmingly consistent and a legitimate point of concern, the rest - drivetrain, brakes, suspension, seem like either normal consumables or hardware with known, common upgrade paths.

I am new to Subarus but what I've seen so far working on them, they are great for year round daily driving and casual trackday use on relatively narrow tires. Of course for a dedicated track car on wide sticky rubber something approximating an old GT1 car would be much faster, bulletproof, cheaper, but definitely not a daily driver.

Legitimately curious about the 'breakage' phenomona, as I am putting together a Forester for just such daily/trackday duties.
Basically adding too much power and/or rubber exposes a few of the econobox roots of the car which is not abnormal. Overall a pretty sturdy car but some systems get overwhelmed pretty easily.

Broken motors are the real issue. That gets pricey.
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Old 10-05-2012, 11:30 AM   #31
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I plan on doing NASA SE Comp school at CMP - Nov 10-11 and instructing for Trackdaze on Nov 12-13. I can't miss the Grand course!

I'm sure Ken is planning on doing Trackdaze as well.
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Old 10-05-2012, 12:14 PM   #32
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Quote:
Originally Posted by WRXBrakes View Post
Basically adding too much power and/or rubber exposes a few of the econobox roots of the car which is not abnormal. Overall a pretty sturdy car but some systems get overwhelmed pretty easily.

Broken motors are the real issue. That gets pricey.
That sounds about right then, and to be expected. To be fair, even though the OEM STI GD control strategy and calibration (donít know about the later ones) is conservative and relatively basic, it does still take into account things like transient exh temp change differences between left/right bank to control individual spark, as well as the IMEP differences inherent to every cylinder due to the architecture. There is clear sensitivity to many of those transient parameters at the OEM (low) power levels, and I canít see even a multi-day Ďtuning sessioní in the aftermarket being able to account for all of those things robustly without a lot more instrumentation than the usual wideband or two and the basic engine sensors.

Anecdotally it seems to me like most engine failures are due to abnormal combustion or oil control issues, both of which are straightforward to control. Of course Iím all talk until I get mine on track, but my eyes are wide open.
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Old 10-05-2012, 12:22 PM   #33
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I would expect to see more BRZ and FR-Ss in attendance and less WRX/STIs. I think these cars will be fun to drive on the track with stock power, upgraded brakes, suspension and tires. Phil turned a 2:17 at VIR in his FR-S. But at that point, your driving a RWD car and might want to look at a BMW, Mazda, et.al. considering the current price/availability of the BRZ.

I still love both my Subaru's and enjoy tracking them and instructing other Subaru drivers. I always keep a spare Subaru oil cap in my truck for those in need and make an effort to spot any Subaru engines with that dreadful AOS installed on the oil filler tube.

My advise to those just getting into tracking their Subaru successfully.
1) leave the car stock (except for brake pad & fluid) and use all the money to go to more events. Invest in the driver, not the car. Buy spare front rotors and pads and have them ready. It wont take long before you will need them.
2) upgrade the brakes & cooling if needed & maybe suspension (sways & endlinks) and go to more events.
3) move to a more aggressive tire, install a baffled oil pan & proper AOS (Moroso, Element, Crawford) and go to more events. If you need more power, go up to stage II... exhaust & solid tune. Run 93 with a couple gallons of 100 octane per tank. Upgrade the cooling if needed (oil,water,trans, etc)
4) Install coilovers, cage, seats, harness, etc (STOP! if you plan on doing this sell/save your nice street car and just buy a fully prepped race car! You might end up with money in your pocket)
5) built engine... if the fully prepped race car doesn't have one (and you really want more power) make sure you get a track proven performance/tuning shop to build and tune.
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Old 10-05-2012, 01:03 PM   #34
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Quote:
Originally Posted by GrpB View Post
That sounds about right then, and to be expected. To be fair, even though the OEM STI GD control strategy and calibration (donít know about the later ones) is conservative and relatively basic, it does still take into account things like transient exh temp change differences between left/right bank to control individual spark, as well as the IMEP differences inherent to every cylinder due to the architecture. There is clear sensitivity to many of those transient parameters at the OEM (low) power levels, and I canít see even a multi-day Ďtuning sessioní in the aftermarket being able to account for all of those things robustly without a lot more instrumentation than the usual wideband or two and the basic engine sensors.
Completely agree here.

Quote:
Originally Posted by GrpB View Post

Anecdotally it seems to me like most engine failures are due to abnormal combustion or oil control issues, both of which are straightforward to control. Of course Iím all talk until I get mine on track, but my eyes are wide open.
Oil control is an issue. Both from the sump and excessive slosh into the PCV system.

Limiting detonation is also a problem. I have a stock location 30R bu tit's only at 18psi or so - feels like maybe 350HP at most.


i am exited that it so far lasted - at least now we can somewhat confidently run the car and bet more data.

Now to fix the pad knockback somehow.

-Ken
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Old 10-05-2012, 08:24 PM   #35
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wrong account.
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Old 10-05-2012, 08:26 PM   #36
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WRX - Daily driver, VF22, 100k miles and 20+ track days. Great car.
STI swapped 2.5RS - track only, who knows how many miles, 15 track days. Awesome car.
STi - T04Z, built block, aero, wide body, yada, yada, yada, 5 track days 3 motors over 2 seasons.
Honda S2000 - better track day car than any Subaru I've ever owned.
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Old 10-08-2012, 11:21 AM   #37
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Originally Posted by eastcoastbumps View Post
STI swapped 2.5RS - track only, who knows how many miles, 15 track days. Awesome car.

I hope mine lasts like that!

Quote:
Originally Posted by eastcoastbumps View Post
STi - T04Z, built block, aero, wide body, yada, yada, yada, 5 track days 3 motors over 2 seasons.
Yes - that will ruin your day/month/year/decade depending on how long you keep it on life support
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Old 10-08-2012, 11:29 AM   #38
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Quote:
Originally Posted by Si1ver&B1acK View Post
I would expect to see more BRZ and FR-Ss in attendance and less WRX/STIs. I think these cars will be fun to drive on the track with stock power, upgraded brakes, suspension and tires. Phil turned a 2:17 at VIR in his FR-S. But at that point, your driving a RWD car and might want to look at a BMW, Mazda, et.al. considering the current price/availability of the BRZ.

I still love both my Subaru's and enjoy tracking them and instructing other Subaru drivers. I always keep a spare Subaru oil cap in my truck for those in need and make an effort to spot any Subaru engines with that dreadful AOS installed on the oil filler tube.

My advise to those just getting into tracking their Subaru successfully.
1) leave the car stock (except for brake pad & fluid) and use all the money to go to more events. Invest in the driver, not the car. Buy spare front rotors and pads and have them ready. It wont take long before you will need them.
2) upgrade the brakes & cooling if needed & maybe suspension (sways & endlinks) and go to more events.
3) move to a more aggressive tire, install a baffled oil pan & proper AOS (Moroso, Element, Crawford) and go to more events. If you need more power, go up to stage II... exhaust & solid tune. Run 93 with a couple gallons of 100 octane per tank. Upgrade the cooling if needed (oil,water,trans, etc)
4) Install coilovers, cage, seats, harness, etc (STOP! if you plan on doing this sell/save your nice street car and just buy a fully prepped race car! You might end up with money in your pocket)
5) built engine... if the fully prepped race car doesn't have one (and you really want more power) make sure you get a track proven performance/tuning shop to build and tune.

I feel like that was for me. Thanks Paul!
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Old 10-10-2012, 03:26 PM   #39
mav1c
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Got the car back yesterday. Made a bit more power (300 -> 308) and torque (318 -> 335). Shake down will be the NASA event @ SP November 3-4. Can't wait!
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Old 10-10-2012, 08:24 PM   #40
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VIR with NASA this weekend in my new silver car #.357 .... 1990 Spec E30 and hope to get lots of seat time to get ready for Comp school in Nov. I will probably bring Ninja Forester on Saturday for ride alongs with my students since the E30 doesn't have a passenger seat yet.
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Old 10-10-2012, 08:33 PM   #41
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Paul, if you can do your comp school at CMP. It's just less stressful there.
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Old 10-11-2012, 06:19 PM   #42
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Ran with Tracks Unlimited at Barber Motorsports Park last Saturday, had a blast! There were 4 Subies there: My instructor's 10 STI with a 11 front bumper, coilovers, and R888s, me, my friend (also an instructor) with a VF39-powered 07 WRX Wagon on NT01s, and an A Stock red 11+ STI sedan.
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Old 10-12-2012, 01:35 AM   #43
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Originally Posted by SubieEngineer View Post
Ran with Tracks Unlimited at Barber Motorsports Park last Saturday, had a blast! There were 4 Subies there: My instructor's 10 STI with a 11 front bumper, coilovers, and R888s, me, my friend (also an instructor) with a VF39-powered 07 WRX Wagon on NT01s, and an A Stock red 11+ STI sedan.
Glad to get some of ya's posting!

Not much else going on in here Subaru related.

I won't need many reasons to track my Subaru - keep em coming!
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Old 10-15-2012, 10:35 AM   #44
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I know of one event coming up that's going to have a lot of Subies.

http://www.nasaracing.net/?page_id=1949
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Old 10-15-2012, 04:03 PM   #45
Si1ver&B1acK
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Thanks Marty. I plan on signing up this week for comp school and SE30 race with NASA SE at CMP in November.

My first weekend with the car at VIR went good with consistent 2:25 lap times and getting very comfortable with the car.
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Old 10-15-2012, 04:34 PM   #46
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Congrats,

2:25's will put you right in the heart of SpecE30, or in other words...some great racing.
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Old 10-16-2012, 08:35 AM   #47
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Quote:
Originally Posted by WRXBrakes View Post
Glad to get some of ya's posting!

Not much else going on in here Subaru related.

I won't need many reasons to track my Subaru - keep em coming!






I have some nice videos, too, but can't access YouTube from work.
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Old 10-16-2012, 08:35 PM   #48
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I know its going to be fun Marty! The other E30 drivers are already scoping my car. I'm sure I will get the Noobie initiation soon.

I will be down at CMP this weekend getting "Skeened".... I mean "Schooled" on driving/racing my E30.
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Old 10-16-2012, 11:43 PM   #49
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Subarus are not all gloom and doom unless you buy all the wrong parts and go to the wrong shop. Road racing these cars requires a ton of on track r&d so choose your shop based on that experience.

I had a pretty good weekend at VIR and it was good to see Ken and Paul. I ran a 1:56 in TTU trim which is a personal best in that configuration. This video should keep anyone excited to race their STi.


Thanks,
Phil Grabow
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Old 10-17-2012, 07:33 AM   #50
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1:56 is flying.
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