Race Tracking Your Supra - Information exchange

[rwense]

Folks. I'm at a crossroads.


Context:
I only do HPDEs. I've been asked to start getting more serious with my driving (One Lap of America and Gridlife shenanigans). So I'm starting to look at my current "build" and finding where the most gain per dollar is.


Right now heres where I'm at:
SPL FLCAs (-2.7 degrees of negative camber currently in the front. -2 degrees in the rear)
CSG pads.
TItan 7 wheels/ appropriate sized tires
15mm spacers up front.
Verus front splitter
Big ol' single exit exhaust causing parachuting.


So the car currently has 4 exposed holes (currently covered by my wrap) from a Mk4 wing. I had intentions of buying a verus UCW as the stands cover my existing holes and remove this wrap. I miss having a yellow car.

I also have a set of Verus camber plates sitting idly to the side. Do I install them with HKS springs to gain some front wheel clearance (remove spacers) but also know they're too soft for track use with aero?

Basically - validate my thought process or (Bryan)call me stupid and put me on a better path (not spending $5k on coilovers right now)

To note: The UCW is not at retail pricing. Not even close.

EDIT: I realize my thoughts are jumbled. Heres a tldr


I have 4 holes in my hatch covered by my wrap. I'd like to have them covered and go back to a yellow car. A UCW at a lower than retail price will accomplish that.

Or do I suck it up buttercup and remove the wrap, leaving the holes exposed and take that $$ and put it towards alternative parts and deal with yellow vinyl over my trunk. I do still care about the aesthetics to a point. I hate having exposed holes.

It's funny you brought up the single exit causing parachuting. I've been trying to figure out how I want to remedy that. I could just buy a verus diffuser and call it a day but I dont want to spend $~700 when I have a bunch of alumalite and a cutoff wheel staring at me in the garage. There's three options in my mind:

1. Simply attach the alumalite to the two bolts that attach the underbody cladding slightly behind and above the diff then attach it to the bottom clip points on the black part of the bumper

2. Do everything in #1 but dremel out the reflectors, add mesh, and cut/bend the heat shielding to allow for any air to escape

3. Do a bumper cut just below the parking sensors and leave the backup light where it is. attach the alumalite to #1/#2's spots by the diff and then use some of the studs/available bolt holes on the underbody to attach the rearward part of the alumalite

All the while trying to keep the angle of the diffuser to be no more than 12 degrees inclined (If I remember right 12 or maybe 14 degrees is typically the flow separation point, cant remember right now)

EDIT: I forgot, there is a 4th option. @garudathree used a rear diffuser from a gt350 that apparently fits up quite easily without cutting. Not sure how much it costs though

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[Islindur]

What about those APR placement? I know Spage/Sayber works but they r interesting too..

 

[Evolution]

Heads up for anyone interested. I will have a set of brand new Ohlins ready to go Thursday (12-7). Figured I would let you guys know before I make the for sale ad. Going to be asking $2500 (presale price / no tax) and that will cover $100 worth of shipping. If shipping is over that, you cover the difference. PM me if interested.

 

[razorlab]

EDIT: I forgot, there is a 4th option. @garudathree used a rear diffuser from a gt350 that apparently fits up quite easily without cutting. Not sure how much it costs though

FR3Z6P013D

 

[rwense]

FR3Z6P013D

What he said ?

 

[rwense]

Here's a pic of it on the car. I imagine any sort of aluminum sheet would do just as well and cheaper. Seems like these go for around the $300 range.

 

[garudathree]

if i were to do it again, i'd adapt the panel from an modelS/ioniq5/6's underbody instead. part of adapting the mustang setup is so when 777 releases a mustang race diffuser, i know i can swap it onto the a90 platform with just a few bolts.

 

[rwense]

if i were to do it again, i'd adapt the panel from an modelS/ioniq5/6's underbody instead. part of adapting the mustang setup is so when 777 releases a mustang race diffuser, i know i can swap it onto the a90 platform with just a few bolts.

Ahhhh that's smart, I hadn't even considered just using one if their diffusers for the mustang chassis. I also haven't even considered an EV underbody panel lol

 

[kaj]

Staggered vs Square pros and cons??? Or you can't go wrong with either set up???

I can't think of any pros to a staggered setup.

 

[kaj]

I'm not finding many good options in 285 with 200tw that heat up quickly for street/track use. I like the RT660, but theyre heavy

...wut?

 

[3TMagnetMan]

FR3Z6P013D

this fits on the Supra??

 

[Rensuhlo]

FR3Z6P013D

I have two of these sitting in our shop. I mocked one up and couldn't quite figure out exactly what would need to be modified for single exit.

Maybe I'll take another peek.

 

[racebuild]

Here's a pic of it on the car. I imagine any sort of aluminum sheet would do just as well and cheaper. Seems like these go for around the $300 range.

A flat panel cut to the proper dimensions to fit would be better. The diffusing portion of the mustang panel is exiting into the bumper and gets no venturi from the rear wing.

 

[garudathree]

A flat panel cut to the proper dimensions to fit would be better. The diffusing portion of the mustang panel is exiting into the bumper and gets no venturi from the rear wing.

the diffusing portion doesn't go into the bumper at all, it's just keeping the exhaust cooled, terminating after it meets the muffler. flow vis showed full attachment to the bumper mount point

porsche's doing something similiar after the 991.1 RS mufflers started cracking

 

[racebuild]

the diffusing portion doesn't go into the bumper at all, it's just keeping the exhaust cooled, terminating after it meets the muffler. flow vis showed full attachment to the bumper mount point

Ah, so you trimmed/removed the diffuser portion and kept the duct inlet for exhaust cooling.

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