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Legacybt 6mt Compromised Autocross Build


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I'm building my dream do-everything car: ski rig, gear hauler, road tripper, autocrosser, and DD.

 

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Back in 2014 I tore it apart for a major overhaul, and it's been under the knife a few times since then.

 

 

Engine - Current

VF-52 Turbo

CNT Catted Downpipe

Grimmspeed UP

Cobb SF Intake

Grimspeed EBCS

Forge BPV

DW65 Fuel Pump

DW 740cc Injectors

Bulletproof TMIC Mod

Group N Engine Mounts

Group N Pitch Stop

Group N Trans Mount

Borla Cat-back Exhaust

K2 Gear Spec Neo Dual Exhaust

Prodrive Oil Filler Cap

Stock Engine Cover :rolleyes:

 

Engine - Future

Killer B Oil Pickup - Purchased

Killer B Oil Baffle - Purchased

2008 Sti Oil Pan - Purchased

Crawford V2 AOS - Purchased

ID1000 Injectors - Purchased

Radium fuel pulse dampers - Purchased

Grimmspeed TMIC - Purchased

Custom TGV Deletes - Purchased

Tomei EL Headers - Purchased

Subtle Solutions Radiator Shroud - Purchased

Subtle Solutions Radiator Shroud - Purchased

Radium Top Feed Conversion Rails - Purchased

Rotated Uppipe and Downpipe with EWG Recirc

Garrett GTX2867R

Tial 38mm EWG

Company23 Anti-Surge EBCS

3.5" Custom Catback Exhaust

Surprises to come next spring/summer

 

 

Suspension/Steering - Present

Koni Shocks

Epic Springs

3/8" Saggy Butt Spacers

RCE Tarmac 1's 500F/450R Springs

AVO Sway Bar Reinforcement Brackets

Whiteline 24mm Front Sway Bar

Whiteline 20mm Rear Sway Bar

Whiteline Rear Camber Bushings

Group N LCA Bushings

Whitleline KCA334 Anti-Lift Control Arm Bushings

Spec B Strut Mounts

RCE Forged Lowering Camber Plates

JDM Sti Pillowball Toe Links

Whiteline KTA124 Camber Arms

Slotted Trailing Arm Mounts

Whiteline Steering Rack Bushings

Kartboy Endlinks

Whiteline Front Roll Center Kit

STI Solid Steering Intermediate Shaft

STI Strut Tower Brace

JDM STI "Front Support Kit"

SPT Lower Chassis Brace

Full Set of Spec B Aluminum Arms

Modified Trailing Arm Mounts

 

 

Transmission/Drivetrain/Shifter - Present

2002 JDM STi Transmission, Suretrac Front Diff

2004 USDM STi 6-Speed & R180 Clutch Pack Diff

2015 USDM STi Transmission & 2007 Spec B R180 Torsen Diff

DSS 27mm Shaft Rear Axles

Whiteline Diff Inserts

Exedy Lightweight Racing Flywheel

STI Stock Clutch

Cobb 6-spd STS

Cobb 6-spd Shift Knob

Redline Shifter & E-brake Boot

Kartboy Rear Shifter Bushing

Group N Rear Shifter Bushing

Kartboy Front Shifter Bushing

Group N Crossmember Bushings

Torque Solution Shifter Bushings

DCCDPro - Purchased, not installed

 

 

Brakes

Grimmspeed Master Cylinder Bracket

STI Brake Booster/Master Cylinder

DBA T3 Rotors

Hawk HPS Pads

Brembo Calipers F&R

DBA Rear conversion rotors

Centric Premium Front Rotors

DBA 5K 2-Piece Front Rotors

EBC 'Yellowstuff' Pads

Stock Brembo Pads

Stoptech Street Pads

Goodridge SS Brake Lines

 

Accessories/Interior - Present

Homelink Mirror

Raising Centre Console

Jazzy Aux-in Mod

STI Gauge Pack

Redlinegoods Black Leather Shifter and E-Brake Boots

WRX Pedals & Dead Pedal

JDM GR STi Recaro Driver's Seat

 

Accessories - Future

Zeitronix ZT-2

 

Audio

JDM Double DIN Radio Bezel

Pioneer Appradio4

Hertz HSK-165 and HCX-165 Speakers

Audison LRX6.9 Amp

ARC Audio XDI850.5 Amp

Kicker IQ1000.5 mounted under driver's seat

JL Audio 10W6V2-D4 10" Subwoofer in JL Stealthbox

Knukonceptz and Monoprice Wiring

Sound deadened front & rear doors, trunk

160 Amp Alternator

 

Footwear

Autocross:

JDM Enkei ES Tarmac 17x8 +45 with 235/40r17 Nitto Nt-01

 

DD/Summer:

Sport Edition KV5 18x8 +50 with 225/40R18 General G-Max

Rays Gramlights 57max 18x8.5 +45 with 255/40R18 Advan AD08-R

Rays Gramlights 57xtreme 18x8.5 +33 with 225/40R18 Direzza ZII

Rota Slipstream 17x8 +48 with 225/45R17 Ventus V12

 

Winter:

17x8 FRD POS Wheels with Hankook Icebears

Rota SVN 18x8.5 +44 with 225/40R18 Dunlop Wintersport

OEM Legacy GT 17x7 with Hankook Icebears

Rays Gramlights 57max 18x8.5 with 225/40R18 Michelin Pilot Alpin PA4

 

 

Appearance/Exterior

Custom painted headlights

Rev D-F JDM Tails

Bayson R Front Lip

Plastidipped Foglight Housings

JDM Rain Visors

OEM Aero Crossbars

OEM Trailer Hitch

 

 

 

 

This is what things looked like laid out on the floor before I pulled the car into its new home:

 

http://legacygt.com/forums/attachment.php?attachmentid=182513&stc=1&d=1400043403

 

http://legacygt.com/forums/attachment.php?attachmentid=182514&stc=1&d=1400043403

 

 

Keep posted for updates!

 

http://legacygt.com/forums/attachment.php?attachmentid=182531&stc=1&d=1400043841

 

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http://i.imgur.com/FjWmce9.jpg

 

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Edited by legacybt
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Looks like an awesome list, the only thing I would wonder about is how much the stock intercooler will be holding you back.

 

With a VF52 probably not much, and it will stay cooler in the pits while autoX'ing.

"Bullet-proof" your OEM TMIC! <<Buy your kit here>>

 

Not currently in stock :(

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even with a vf52, a larger TMIC will flow better and make more power, more reliably. bulletproof mod or not,

 

OP has nice diffs in that trans.

 

Yeah, like I said--"not much". Didn't say it wouldn't make a difference to switch to an aftermarket option, but the stocker with plastic endtanks DOES have heatsoak benefits in autoX situations. Fulton's stock intercooler was generally cooler than my Perrin when we were sitting around with the cars running waiting for our own runs.

 

Either way though, 100% agree on a really nice pile of parts. OP: nice build, look forward to following along :)

"Bullet-proof" your OEM TMIC! <<Buy your kit here>>

 

Not currently in stock :(

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It'll never handle like a 944.

 

Haha no it won't. Lift-throttle oversteer isn't quite the same as power-on oversteer on ancient all season tires. :rolleyes:

 

That being said, having the solid intermediate shaft instead of the stock rubber damper one - coupled with the whiteline steering bushings and misc chassis braces should at least bring some of that feel into the equation. 245/40/r17 star specs (or comparable) should keep things interesting too!

 

Yeah, like I said--"not much". Didn't say it wouldn't make a difference to switch to an aftermarket option, but the stocker with plastic endtanks DOES have heatsoak benefits in autoX situations. Fulton's stock intercooler was generally cooler than my Perrin when we were sitting around with the cars running waiting for our own runs.

 

Either way though, 100% agree on a really nice pile of parts. OP: nice build, look forward to following along :)

 

Yeah, there were a couple considerations for staying with the stocker. Heat soak was one, but my engine also has 115,000 miles on it so pushing it closer to the reliability limit isn't high on my priorities.

 

I have an arduino-based intercooler spray project on the back burner right now too, which should combat that heat soak pretty nicely.

 

 

Wow, It's rare that someone posts a future mod list like that and then actually has all the parts to deliver!

 

Welcome to the world of a mechanical engineer with too much time and just enough money

Edited by legacybt
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Welcome to the world of a mechanical engineer with too much time and just enough money

 

I'm a fellow ME. I have the opposite problem though. I'll be lucky if I get my snow tires off this year. :lol:

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I'm a fellow ME. I have the opposite problem though. I'll be lucky if I get my snow tires off this year. :lol:

 

Haha I'm loving the free time I have after graduation. I know it won't last forever.

 

 

 

BUILD UPDATE

 

Before I made my first post, the trans, diff, axles, brakes, turbo, exhaust and shifter were out of the car.

 

A la this (picture taken with new UP and Turbo in)

 

http://legacygt.com/forums/attachment.php?attachmentid=182982&stc=1&d=1400562826

 

The STI Brake booster is installed, DW 740cc injectors are installed, Whiteline steering rack bushings are in, and the STI intermediate shaft is installed as well. The Grimmspeed uppipe is installed, and the VF-52 was installed for a while...

 

And then I spent part of the weekend replacing vacuum hoses and oil lines. My engine looks like this now:

 

http://legacygt.com/forums/attachment.php?attachmentid=182983&stc=1&d=1400562826

 

Lesson Learned: Apparently the OEM turbo oil feed / AVCS valve line isn't an easy install. I searched beforehand and couldn't find any walkthroughs, and now I understand why. Intake manifold, TGV, Coolant crossover and numerous vacuum/electrical connections later it's finally installed. Had I known, I would have left the original one in place. There goes a couple days :spin:

 

Reinstallation will have to wait until new gaskets come in.

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821548250_2014-05-1912_47_00.thumb.jpg.ebf1a9015c324fd5c28b8e600fa92e13.jpg

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Interesting build project. I have autocrossed mine several times since 2008. With some suspension parts, it now has neutral handing instead of understeer. Overall, it is a huge and heavy car to autocross! I can beat some miatas but the ones with hoosiers and good drivers beat me.
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  • 2 weeks later...
the legacy can be a winner in ESP class nationally with the right mods and driver. That much is fact.

 

I won't be classed in ESP unfortunately. Far from it - I think I'll be in SM. I don't expect to be competitive, I'm just looking to make my Legacy as fun as possible around the course!

 

loving the first parts pic ...

 

now im sure someone could have warned you about those oil feed lines ... had you asked lol!.

 

Haha yeah, if only I had asked about those oil lines..

 

~~~

 

 

Minor update, I didn't have much time to work on the car. The parts are in to put the top half of my engine back together though!

 

 

Rear diff and axles are in, and new hubs are installed all around.

 

 

http://legacygt.com/forums/attachment.php?attachmentid=184208&stc=1&d=1401688114

 

This was pretty toast:

http://legacygt.com/forums/attachment.php?attachmentid=184209&stc=1&d=1401688114

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Edited by legacybt
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With upgraded turbo & front diff, you'll be in SM. I showed up to my first (only) autox classed as SM and the only competitor was a Cadillac coupe on BFG R1 slicks. To say I was outclassed was an understatement.

 

If you can find a Whiteline ALK-M kit, that will help your turn-in. PUtting on the Cusco under-body braces will stiffen up the back alot. Adding the Whiteline/SpecB rear suspension bits will help as well. Wagon tends to oversteer pretty quick. However, if you can keep your foot planted you can drive it out on sticky tires. On all-seasons, you'll have to lift.

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With upgraded turbo & front diff, you'll be in SM. I showed up to my first (only) autox classed as SM and the only competitor was a Cadillac coupe on BFG R1 slicks. To say I was outclassed was an understatement.

 

If you can find a Whiteline ALK-M kit, that will help your turn-in. PUtting on the Cusco under-body braces will stiffen up the back alot. Adding the Whiteline/SpecB rear suspension bits will help as well. Wagon tends to oversteer pretty quick. However, if you can keep your foot planted you can drive it out on sticky tires. On all-seasons, you'll have to lift.

 

I've been drooling over your wagon for a while now - it's hawt. Looks like a blast to drive!

 

I've been considering the ALK kit, but budget is a major constraint for me. I'm keeping close enough to stock ride height (1" drop) that it's not totally necessary, and more of a want-to-have that I'll add somewhere down the road.

 

The same can be said for the spec b bits - I know how important unsprung weight is but I can't justify another $1100 (Canadian Premium) to save 7ish lbs per rear corner. If something comes up locally for much cheaper, though....

 

 

I picked up some BNIB JDM Sti lateral links and a whiteline positive power kit the other day. Hopefully they should help the sloppy rear end I have now (along with some Tarmac 1 coils pending purchase!).

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I've been drooling over your wagon for a while now - it's hawt. Looks like a blast to drive!

 

I've been considering the ALK kit, but budget is a major constraint for me. I'm keeping close enough to stock ride height (1" drop) that it's not totally necessary, and more of a want-to-have that I'll add somewhere down the road.

 

The same can be said for the spec b bits - I know how important unsprung weight is but I can't justify another $1100 (Canadian Premium) to save 7ish lbs per rear corner. If something comes up locally for much cheaper, though....

 

 

I picked up some BNIB JDM Sti lateral links and a whiteline positive power kit the other day. Hopefully they should help the sloppy rear end I have now (along with some Tarmac 1 coils pending purchase!).

 

Gire (in Vancouver) was selling some suspension bits awhile back, might drop him a line.

 

The Cusco braces will have more to do with stiffening the rear than other stuff.

 

For the Tarmac 1, you'll find they are soft. When I talked to them, they were offering "spirited driving" rather "autox" settings. If you are going after an autox car, I would get your suspension tuned for that rather than DD. Otherwise, its a waste of money. You can always spin the selector to "soft" to make up for the harsher ride. Also, spend the money on a good corner-balance, which is what makes c/o worth the money. I would tune in quite a bit of forward rake to keep the front planted and it will mean less delay waiting for the weight transfer to the rear (which slows your exit from a corner).

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Gire (in Vancouver) was selling some suspension bits awhile back, might drop him a line.

 

The Cusco braces will have more to do with stiffening the rear than other stuff.

 

For the Tarmac 1, you'll find they are soft. When I talked to them, they were offering "spirited driving" rather "autox" settings. If you are going after an autox car, I would get your suspension tuned for that rather than DD. Otherwise, its a waste of money. You can always spin the selector to "soft" to make up for the harsher ride. Also, spend the money on a good corner-balance, which is what makes c/o worth the money. I would tune in quite a bit of forward rake to keep the front planted and it will mean less delay waiting for the weight transfer to the rear (which slows your exit from a corner).

 

I'll add the braces to the list, I have to save up for some better rubber. Unfortunately my budget is maxed for the time being.

 

Those coils are where the "compromise" part of this build comes in. In reality this is a DD, and a lot (95%) of my non-commute driving is just that - spirited. I spend too much time on rough pavement (Duffy Lake Road, anyone?) to justify a full auto-x setup. Spring rates on the tarmacs are still higher than the epic springs that I'm running now, and the added travel will be very welcome - hence the relatively high ride height. A corner balance is definitely in the books.

 

A few years down the road when I have the space I'll probably grab a pre-modified miata for just that. Until then..

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if you have $1600 US lying around, I have 235/40/17 BFG R1 mounted on Enkei PF01 17x8 that fit perfectly. Stick like nothing you've ever used.

 

Haha I was eyeing those a while back. I'm on the lookout for some 18" rims without rubber, and 17" streetable auto-x rubber (a la starspecs) without rims.

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the legacy can be a winner in ESP class nationally with the right mods and driver. That much is fact.

 

Wut? I have never seen a Legacy at a national event in the midwest. Let alone heard of one competing nationally.

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I took mine to a couple national events. mostly in the northeast. At the 2011 NJ Prosolo, if i hadn't snapped axles on the second day i was ready to be in trophy contention. was only lightly off the pace on the right side course and was ready to throw down the second day. And this was against the likes of Sam Strano and Sam Krauss Also in 2008, at the finger lakes prosolo, my Co-drive put down the single fastest ESP time there but ran out of chances to do it 1 more time to take the win. ended up in 4th, only 6/10ths back from the combined time lead. and those were the only 2 national level events i took it to. I have consistently beat the 2013 prosolo ESP winner at local competition.

 

My LGT was very competitive on a national level. if i had gone for fender modification and wide tires, it would have done some serious business. The car is very capable and you can get it below 3200lbs with simple mods. my car was 3277 with the stock seats and battery.

Edited by whitetiger
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  • 3 weeks later...

Quick update before a serious weekend of wrenching

 

I got me some tires (nitto nt-01)!

 

http://legacygt.com/forums/attachment.php?attachmentid=186341&stc=1&d=1403892876

 

http://legacygt.com/forums/attachment.php?attachmentid=186340&stc=1&d=1403892876

 

 

 

Installed rear diff inserts and JDM sti lateral links, along with rear brakes

 

http://legacygt.com/forums/attachment.php?attachmentid=186342&stc=1&d=1403892876

 

 

 

Got the exedy lightweight flywheel and oem sti clutch installed

 

http://legacygt.com/forums/attachment.php?attachmentid=186343&stc=1&d=1403892876

 

 

 

I also finished installing transfer case bearings in the transmission, it's ready to drop in this weekend!

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