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Who's making the move to STU?

It's about damn time...I think I'm going to make the jump from BS.

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Old 03-22-2018, 11:40 AM   #1 (permalink)
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Default Who's making the move to STU?

It's about damn time...I think I'm going to make the jump from BS.
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Old 03-22-2018, 12:40 PM   #2 (permalink)
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I'll be there in 2019. I want to start having discussion on what all we think needs to be addressed on these cars in order for them to compete. We had a short one in the last pages of the autocross thread, but I think the conversation merits its own thread.

So far for my build I am looking at fortune coilovers, z1 camber products and 2 piece rotors, and after discussing it with other forum members, a os geiken lsd.

That's for 2019 anyways. I want to hold off on the remaining allowances until I see how things play out.

What things were you planning on doing and when would you make the jump?

edit: The Nismo models were recently approved as well. Should be good fun.

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Old 03-22-2018, 01:35 PM   #3 (permalink)
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A build list would be fun! It all depends on funds as well...

For me...

Timing - 2018 season, but waiting for the weather to warm up and salt to come off the roads.

1) 18x10's and 285 RE-71R's at all 4 corners. What offset front and rear?
2) Intake
3) Tune? I'm not 100% clear on the SCCA's verbiage and allowances...
4) JRZ or KWv3?
5) Camber plates
6) OSG - maybe 2019
7) Front bar (carryover from BS)
8) Exhaust (carryover from BS)
9) Brakes...more than happy with the stock/sport set up
10) Seat and harness
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Last edited by nismosis; 03-22-2018 at 01:36 PM. Reason: added info
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Old 03-22-2018, 02:12 PM   #4 (permalink)
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Originally Posted by nismosis View Post
A build list would be fun! It all depends on funds as well...

For me...

Timing - 2018 season, but waiting for the weather to warm up and salt to come off the roads.

1) 18x10's and 285 RE-71R's at all 4 corners. What offset front and rear?

285 tires will be happier on 11" wide wheels

2) Intake
3) Tune? I'm not 100% clear on the SCCA's verbiage and allowances...

Uprev and Ecutec tunes would be legal. Big no-no's are stand-alones and hacking up the wiring harness.

4) JRZ or KWv3?

You'll probably want springs stiffer than the OTS options have. Also, you can't convert the rear to a true coilover as that would be a geometry change.

5) Camber plates

You want control arms, camber plates are for strut type suspensions which we don't have.

6) OSG - maybe 2019

This will have a noticeable effect on the balance and handling depending on how it's set up.

7) Front bar (carryover from BS)

You might want to disconnect/remove the rear bar once you get stiffer springs on the car. It was a noticeable improvement when I did it on mine.

8) Exhaust (carryover from BS)

Replace the factory cats with some HFC's

9) Brakes...more than happy with the stock/sport set up
10) Seat and harness

While you can do aftermarket seats currently, there's a proposal out now to require factory seats when the factory seats had airbags built in. Just be aware the money you spend on seats might be down the drain in a couple years.
Just my thoughts on your list
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Old 03-22-2018, 02:31 PM   #5 (permalink)
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Also if you get bored, you can always throw a set of Hoosiers on it and have a fun BSP-ish car.
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Old 03-22-2018, 03:50 PM   #6 (permalink)
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Also if you get bored, you can always throw a set of Hoosiers on it and have a fun BSP-ish car.
always trying to get folks to the dark side.
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Old 03-22-2018, 03:59 PM   #7 (permalink)
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Sorry...meant the Camber Kit that eliminates the eccentric bolt and holds your alignment. New control arms...some day.

Currently have 18x10 Forgestar rears...would be cheaper just to get another set of 18x10's with the correct offset for the front.

What spring rate do you recommend for rear?
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Old 03-22-2018, 04:07 PM   #8 (permalink)
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I have 900 lb/in springs in the rear but that's probably too much for a non-aero, non R-comp shod car.
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Old 03-22-2018, 05:57 PM   #9 (permalink)
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Originally Posted by nismosis View Post
Sorry...meant the Camber Kit that eliminates the eccentric bolt and holds your alignment. New control arms...some day.

Currently have 18x10 Forgestar rears...would be cheaper just to get another set of 18x10's with the correct offset for the front.

What spring rate do you recommend for rear?
for the z, these are one in the same. there are more eccentric eccentric bolts, but most of the camber kits on the market involve replacement of the upper control arm for the front, and the two lateral links in the rear.

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Old 03-22-2018, 07:10 PM   #10 (permalink)
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One of the wheels I am looking at comes in a 10.5 +22. I happened to have a set of 25mm spacers which would put my stock wheels right where the perspective wheels would be. I took a few photos of how it went. This is on my cars "bad side" it has about -.7 to -.9 degrees of camber depending on the shops rack, but none the less it sucks. From what I saw, I think the the 10.5 +22 will be able to fit no problem once camber is in the -2.5 to -3 range. Other members in this section are running wider with r compounds so I don't think hitting the max wheel and tire allowance will be an issue.







None the less, my plan is to get the suspension sorted and wait until the following season or mid season to replace the wheels. There is always the chance that more options will become available the longer I wait.

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Old 03-23-2018, 02:25 AM   #11 (permalink)
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My STU Build List if I keep my car:

18x10 (Volks of some sort) w/285 RE71R
z1 FUCA
Front bar
Berk HFC
Exhaust something to stay below 100db lol
z1 2 Piece Rotors
Penske 7500DA
1000lbs front/896lbs rear springs. Change as necessary
OS Giken
Race seat of some sort. New SCCA rule Race Seat + mounting equipment must weigh 35lbs.

Spoke with a couple of veteran and they recommend tires, suspension and differential as the 3 must haves.

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Old 04-02-2018, 05:35 PM   #12 (permalink)
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I am doing a slow ghetto build. Trying to be ready for 2019.

Currently I have

Wheels:
18x10.5 +25 wheels. 20mm spacers in the rear. 275/35/18 RE71R

Suspension:
SPC (front and rear) camber arms and toe bolts (Old style front arms)
Eibach front bar
3011 Koni double adjustables
Megan Hi/Low spring perch

Diff:
OS Giken

Power:
Kinetix HFC
ISR Y-Pipe and Single exit exhaust
MAF Tubes and K&N Filter

I want to add these sometime in the future:
Z1 2 piece rotors
Z1 Intake
Poly subframe bushings
Lightweight battery

Going to try to skip the header, since it seems like a PITA. Hopefully, the 12+ coolant/oil heat exchanger is sufficient for oil cooling.

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Old 04-02-2018, 11:40 PM   #13 (permalink)
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Quote:
Originally Posted by Justint5387 View Post
I am doing a slow ghetto build. Trying to be ready for 2019.

Currently I have

Wheels:
18x10.5 +25 wheels. 20mm spacers in the rear. 275/35/18 RE71R

Suspension:
SPC (front and rear) camber arms and toe bolts (Old style front arms)
Eibach front bar
3011 Koni double adjustables
Megan Hi/Low spring perch

Diff:
OS Giken

Power:
Kinetix HFC
ISR Y-Pipe and Single exit exhaust
MAF Tubes and

I want to add these sometime in the future:
Z1 2 piece rotors
Z1 Intake
Poly subframe bushings
Lightweight battery

Going to try to skip the header, since it seems like a PITA. Hopefully, the 12+ coolant/oil heat exchanger is sufficient for oil cooling.
You seem most of the way there. What spring rates are you running and how did you decide?
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Old 04-03-2018, 11:59 AM   #14 (permalink)
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Right now is 900 all around, I tried it on 1100/700 and the car was miserable. It will probably change around.
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Old 04-03-2018, 06:10 PM   #15 (permalink)
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Right now is 900 all around, I tried it on 1100/700 and the car was miserable. It will probably change around.
What didn't you like about the first combo? I have an idea, but I would like to know your thoughts.
Also, did you run that without a front sway bar?
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