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The Evolution of F-Prepared, Re-build Log.

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Old Sep 7, 2017, 03:34 PM   #1
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The Evolution of F-Prepared, Re-build Log.

Hey Guys! I have been working on Evo's a long while, but finally ended up with one as a race car. This log should have plenty of good information, and I wanted to do it to establish a timeline for myself as well.

Anywho, Mike Brausen owned the car previous to my co-driver Josh and myself. It had done well on a national level on and off, and we saw potential for it in this class. The backup plan was always to swap everything into a street mod car if it somehow proved to not be competitive. We drove out to pick up the car at spring nationals in Nebraska this year.

I'm going to list the parts currently on the car so I can better keep track of them, Not sure if it will give you guys much value haha.

Engine:
Stock Evo 9 Longblock
FP Green turbo w/restrictor
Titek 02 housing
Buscher street intercooler kit with piping
PE 1100's
Walbro 255lph fuel pump.
Fuel lap fuel pressure regulator
K&N intake
Custom built 3" exhaust
450whp and 406ft-lbs

Drivetrain:
TRE built 5-speed with 8/9 gearing and 4.11:1 final drive.
5-speed tcase w/custom machined ATS carbon hybrid front differential
Aluminum Driveshaft
TRE Max-lock 12 plate rear differential

Suspension:
xxyzx Coilovers, double adjustable, (Koni Shock)
Currently on 1100/1300 springs
Custom made front camber plates
ESM Race full spherical replacement bushings
Works sway bars front and rear (only using rear currently)
Whiteline bump steer/roll center kit in front
Ernie rear high-clearance trailing arms
Wilwood Small front brake kit (for 16" rim clerance)

wheels and tires:
Real wheels 16x12 wheels
Hoosier 23.5x12-16 slicks

Misc:
Trunk mounted rad
Kirkey seat etc.

2380lbs without ballast, minimum weight = 2700lbs.

I won't go into too much detail about the problems we found with the car right away. But we gutted the whole suspension and started over on setup. We found a bent Spindle and replaced all the bushings with sphericals before our first outing.

The car showed pace right away and we were able to come away with a couple national level wins with it at the end of the season. We have a large amount of stuff to get done this winter, so check back often!

PHOTO DUMP TO FOLLOW!

Zack


Last edited by wanabgts; Sep 8, 2017 at 11:18 AM.
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Old Sep 8, 2017, 08:14 AM   #2
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excited to see more on this!

i thought the class minimum was 2300 lbs? wasnt there a red car on here in that class a few years ago??
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Old Sep 8, 2017, 08:15 AM   #3
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Drives: 06 EVO MR, 09 370z nismo, 07 civic si

Some work we did right after getting the car, removed bushings, bead blasted arms, and install ESM Race bushing kit...



After installation of the kit we checked bump travel on each corner and set the dampers to impact bump stops right before critically hitting the car. We also trimmed more of the fenders and got the car roughly 1" lower than it was previously. Getting the rear to have this much uptravel at this ride height made pocketing of the frame and such necessary to get full travel of the upper arm.


Lastly on the re-assemble we installed out new camber plates.


More to come later as I get the pictures in order!

Zack

Last edited by wanabgts; Sep 8, 2017 at 11:17 AM.
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Old Sep 8, 2017, 10:42 AM   #4
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Quote:
Originally Posted by Meathooker View Post
excited to see more on this!

i thought the class minimum was 2300 lbs? wasnt there a red car on here in that class a few years ago??

There is another silver and red car, awesome build but was never ran competitively. It is currently still for sale.

Here is the formula for minimum weight in my class. My actual weight is 2695lbs based on actual displacement.... Here is the break down.

My weight factor is 1.2xdisplacement. = 2400lbs
12" wheels =100lbs
awd =200lbs
total weight =2700lbs minimum

Minimum weights are determined by engine displacement. Increases in engine
displacement resulting from legal overbore are not considered in these
calculations.
Wheels up to 10” wide are allowed with no weight increase; a maximum
width of 12” is permitted.
Weight formulas (lbs.):
Piston Engines: 0.750 x displacement (cc)
Rotary Engines: 0.700 x specified displacement (cc)
Forced Induction: + 0.450 x displacement (cc)
Peripheral Port Rotary: + 0.050 x displacement (cc)
Weight Adjustments (lbs):
Wheels greater than 10” wide up to 12” wide: .....................................Add 100
AWD:.............................................. ..............................Add 0.100 x displacement (cc)
FWD:.............................................. .....................Subtract 0.100 x displacement (cc)
Solid Drive Axle:............................................. .........Subtract 0.050 x displacement
Regardless of the weight formulas above no car may weigh less than
1900 lbs. or be required to weigh more than 2700 lbs. prior to addition
of weight adjustments defined herein and in Section 17.
Weight Calculation Example:
Subaru WRX STI (2.5L) with 11” wheel width.
Actual displacement (before overbore): 2457 cc.
The formula would be: 0.750 (piston engine) + 0.450 (forced induction)
= 1.2 (total weight factor).
Calculated weight: 1.2 x 2457 = 3195 lbs. (exceeds maximum limit).
2700 lbs. (maximum allowed weight) + 246 lbs. (0.100 x displacement,
rounded) + 100 lbs. (wheel width over 10”) = 3046 lbs. (total weight

The only heavier car in the class is the STI, because it is all weight based on displacement.

Zack

P.S. I'm new on flickr, sorry about the double pic posts, I shall try and correct.

Here is a pic in its current fighting form to keep some interest through the boring bits.


Last edited by wanabgts; Sep 8, 2017 at 11:15 AM.
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Old Sep 8, 2017, 11:05 AM   #5
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Awesome, glad you started a build thread. I drove that car at nats last year. It was great then and probably even better now.

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Old Sep 8, 2017, 11:14 AM   #6
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Awesome, glad you started a build thread. I drove that car at nats last year. It was great then and probably even better now.

Thanks, it has been doing really well for us so far.....


Zack
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Old Sep 8, 2017, 11:27 AM   #7
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Drives: 06 EVO MR, 09 370z nismo, 07 civic si

One of the big weight/cg mods we did right away was get the car over to full lexan windows front and rear. This shaved around 30lbs up high, which we then bolted to the floor of the car.


I also had to build a new exhaust as the car was too loud for some of the local events. This is no two mufflers with a clock-able turn down. We ended up fully wrapping it to help with resonation.


We also added a new steering wheel and extension, and installed a lightweight kirkey as far back and as low as we could and still drive the thing.....


Should have some new content coming as the winter build season kicks in.

Zack
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Old Sep 8, 2017, 12:33 PM   #8
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What brakes are you guys running?
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Old Sep 8, 2017, 01:35 PM   #9
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Amazing car. Looking forward to videos!
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Old Sep 8, 2017, 03:47 PM   #10
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What brakes are you guys running?
The are a Custom built Wilwood setup, very similar to the AMS Drag brake kit for the Evo.

Here is some video from national tour, we have made a lot of changes since this video. But you can tell its working.....


Zack
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Old Sep 8, 2017, 04:31 PM   #11
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That video looks sped up the car is so fast lol. So much grip. Very nice.
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Old Sep 8, 2017, 04:33 PM   #12
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Originally Posted by letsgetthisdone View Post
That video looks sped up the car is so fast lol. So much grip. Very nice.
Thank you sir! It's fun to drive that's for sure, this was my second weekend in the car....so it should get better.

Zack
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Old Sep 8, 2017, 08:24 PM   #13
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Ya I miss the stock turbo acceleration my car gutted had before I installed all the cage/safety bits.
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Old Sep 8, 2017, 08:28 PM   #14
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Ya I miss the stock turbo acceleration my car gutted had before I installed all the cage/safety bits.
It spools well for an fp green, just have to floor it early with your left foot on the brake!

Zack
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Old Sep 9, 2017, 06:48 AM   #15
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Looks like a really fun car. Definitely interested to see how it does.

I see you're still on a stock shifter assembly. I've got a CAE shifter in my car and I think it's a fantastic mod. Shifter feel is extremely crisp and precise and it also puts the knob a fair bit closer the wheel which is nice. It seriously blows any other shifter I've ever felt out of the water.



Also out of curiousity what oiling mods are done to the engine?
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