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Old 05-20-2019, 02:48 PM   #1
MK19
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Member#: 21977
Join Date: Jul 2002
Chapter/Region: NWIC
Location: Quilcene, WA
Vehicle:
2003 WRX Wagon
White

Default Building a gravel car

Good day all! I wanted to write up some ideas for my 2003 WRX Wagon project car and get some feedback. Back in 2002, I had a brand new WRX Wagon and I spent 6 years converting it into a full V7 STI Wagon. At the time it was the best clone in North America and I always wished I had a white car, not WRB. Anyways, I found this 03 WRX Wagon and it had a sheared timing belt, so I want to build this car from the ground up into a gravel car, as I live 4 miles off-road and it would be more of a fun daily, as opposed to a commuter. Here's my ideas:

EJ207 V7
STI V6 RA 5 speed 4.44, non-DCCD w/ R180 AP Suretrac
Full Group-N bushings
STI V7 suspension
Subaru red 4/2 pot brakes
Fast steering rack (I used to own a Rev-Labs Q2 and it was sick!!! 2 turns lock-to-lock, but I have no idea who makes racks now)

My goals are to make the car light and fun. I am not going to get to consumed with making a ton of boost and HP. I’d eventually like to have a dogbox PPG 1-2 gearset (My inner love for a 1968 Camaro begs for this), but obviously that’s a pretty big single expense, so that will come a bit later. I realize the 5 speed is a bit limited by comparison to a 6 speed, but the taller gearing will make a much faster car. I have debated over and over which engine to use and the V7 EJ207 keeps coming up as the most reliable solution as far as power and reliability is concerned. I was shocked to see that the cost for the engine is still just about as much as I paid for my old one back in 2005. The car is obviously sitting, as I have not started yet. I want to try and be sure to start this project right and I am looking for input from people that have stayed in the scene, as I have been away from the details of things since 2008 when I sold the MustangKilla. Thanks for your time and I look forward to everyone’s input!
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Old 05-21-2019, 04:29 PM   #2
Homemade WRX
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Member#: 33782
Join Date: Mar 2003
Chapter/Region: MAIC
Location: Mooresville, NC
Vehicle:
96 in the garage
search FIRST, then PM!!!

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At his point in time, I'd say the 6-spd is an easy option.

The phase 2 RA 5-spd trans sell of nearly as much as USDM 6-spds. You might also want to double check the gear ratios in comparison.
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Old 05-22-2019, 04:57 AM   #3
Hyper
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Member#: 15822
Join Date: Feb 2002
Location: MOCKBA
Vehicle:
1999 WRB GM6
2.34 LR destroker

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Quote:
Originally Posted by MK19 View Post
w/ R180 AP Suretrac




seriously, 6 speed is a better idea with any plated R180 takeoff
if you manage to find one with helical front diff, that car is going to behave like a dream on gravel with stock sized 20/20mm sways

there are few guys in Europe still making those quick racks, search on facebook
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Old 05-22-2019, 09:23 AM   #4
TDagen
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Member#: 163648
Join Date: Nov 2007
Chapter/Region: MWSOC
Location: Xona 78•64 UHF
Vehicle:
2002 WRX
V9 6mt R180 Brembos

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+1 on the 6mt.

Sounds like hyper knows what’s up on the gravel situation. +1 again

Looking forward to seeing more of this project, make sure and post some updates.
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Old 05-22-2019, 01:44 PM   #5
MK19
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Member#: 21977
Join Date: Jul 2002
Chapter/Region: NWIC
Location: Quilcene, WA
Vehicle:
2003 WRX Wagon
White

Default

I loved the 6 speed in last car, but I did have a V5/6 RA 5 speed with 4.44 before I got the 6r and I loved being able to get out of the hole really fast (maintained boost really well too). Also, I don't mind being limited at the top end. I am pretty sure I want a 4.44 setup, I think I just need to find the right box and rear diff combination. Might be time to call Dave over at Rallispec and see what he thinks...
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Old 05-22-2019, 02:22 PM   #6
T-37
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Join Date: Mar 2008
Chapter/Region: MWSOC
Location: Wichita, KS
Vehicle:
0304 WRX WRX
SY WRB

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As far as the rack, the 2015+ STI is relatively quick at 13:1, it will swap into your wagon, but you'll have to use thread adapters to retain your inner tie rods, and use a 10mm spacer on one of the mounting bolts. I believe TSSFab makes direct fitment subframes for them as well, which is the route I'd go for a rally car.

There's also a company called PRS Quick Steering that was making quick racks (something like 2.2 lock to lock) within the last couple years.
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Old 05-22-2019, 08:27 PM   #7
Homemade WRX
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Member#: 33782
Join Date: Mar 2003
Chapter/Region: MAIC
Location: Mooresville, NC
Vehicle:
96 in the garage
search FIRST, then PM!!!

Default

Quote:
Originally Posted by Hyper View Post
if you manage to find one with helical front diff, that car is going to behave like a dream on gravel with stock sized 20/20mm sways
I'm still curious if anyone has messed with the spring rate on the Suretracs. You know me, and it's been a bad idea sitting in the back of my head. I also have two Suretrac 6-spd trans
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Old 05-23-2019, 03:04 AM   #8
Hyper
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Member#: 15822
Join Date: Feb 2002
Location: MOCKBA
Vehicle:
1999 WRB GM6
2.34 LR destroker

Default

Quote:
Originally Posted by Homemade WRX View Post
I'm still curious if anyone has messed with the spring rate on the Suretracs. You know me, and it's been a bad idea sitting in the back of my head. I also have two Suretrac 6-spd trans
they have
its all in Russian, remind me, I will email you all the detailed info
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