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Impreza HTS (Norwegian build STi V8 with Cosworth engine)
This is a thread about my car that has gone from being a dailydriver to fully built racecar.
I do everything by my self (except the welding) and I don't do this for a living it's just a hobby. (I'm an explosive engineer)
It's also a warning how things can end up if you get mod-addicted. . .
The car started as a 2003 STi V8. This is the former car of Petter Solberg that he had as "company" car the year he become WRC champion.
I bought this car in january 2006, and had it for an hour or so before I turned in into the local EcuTek tuner and but on a new exhaust and did a remap.
This was done to make the car more drivable.
This winter I used the car for a lot of Trackday on ice and when the summer came it went to Trackdays on tarmac.
I had about 1500 - 2000 miles on different tracks this summer until this happend the 29 of july 2006.
Early in the mornig when everything was great:
A litle later on the day I lost my brakes and this happend:
I was able to fix the car in 4 weeks and went to the next big trackday event.
But since the airbags was so expensive to buy new, I made a desission and ordered a full weld in WRC spec rollcage form Custom Cages in the UK.
This I have fitted after the end of the 2006 season.
I also had a lot of suspension work done, new brake lines, rotated turbo mount etc. done this winter and the car was ready to the trackday events started up again in April 2007.
The 2007 season went on with much different chassie testing. I think I had the car in for about 10 different wheel alignments and tryed 5 sets of springs with different springrates to find the setup that was best for my driving style.
I used a Chiel Bos coilover kit at this time.
After this season I got the chassie to behave the way I wanted and now has the time come for some more power.
So in October 2007 I ordered a Cosworth longblock with billet crank, APS TSR70 turbo kit, APS DR525 FMIC, APS header +++
I put this into my car just before christmas 2007 and we had this on the dyno on new years evening so I knew everything was safe and I could start to break it in.
I drove about 1000 miles on the road for break in and then it was time for some ice trackdays again.
This winter I used a few hundred gallons of gas on different ice trackdays, before I had this accident. I hit a hole in the ice going side ways in 4 gear.
And this was the result of this hole:
Luckely it was the damper that broke into 2 pieces if this hadn't happend I think I will have rolled over and made much more damage to the car.
In 2008 it started a new racing serie here in Norway and my car classified into this serie, so now it was the time to start competing.
I have never been into any racing, but in the first race I finiched 2 in my class and 5 overall (among 27 cars) so I was pretty happy for this.
The rest of the season was bad.
I had top 5 qualifing times in the most races, but had one broken gearbox, one engine brakedown (injector failure), exhaust manifold that cracked several times. So I didn't finish any more races this season.
But the car has proven it's potential so this is where I am right now, making a total rebuild of the car.
I will thank Brett Moncur at Celtic Motorsport (former Harman Motive) for great service and helping me to source parts I need. I have bought all my Cosworth parts of him.
Here is some of the specs:
Engine:
Cosworth billet crankshaft
Cosworth rods and pistons
Cosworth Heads
Cosworth drysump oil system (when I get it)
Cosworth inlet manifold (when I get it)
Harman Motive closed deck 2,5 l block
GT35 turbo with .84 or 1.06 exhaust
Custom made Inconel exhaust manifold
1150 ccm injectors
RCM fuelpressure regulator
RCM adjustible exhaust cam sprockets
RCM pulleys
Bosch 044 fuelpumps x 2
Custom made fuellines
Electronics:
MoTec M800 engine management
MoTec SDL
MoTec SLM
MoTec CDI ignition
MoTec GPS logging system (10 hz)
Custom wire system
Transmission:
JDM 6 speed close ratio.
STi GrpN LSD front diff.
Cusco 1,5/2 way LSD rear diff.
DCCD
RCM carbon fibre prop shaft
DSS stage 5 axels rear
DSS front axels
STi 06 hubs machined to fit old coilovers and 5 x 100 bolt pattern
External oil cooling gearbox
External oil cooling rear diff.
Suspension:
Proflex EVO 3 3 way coilovers
7 kg/cm front springs
5 kg/cm rear springs
DMS top mounts
Whiteline swaybars
Interior:
Custom Cages weld in rollcage.
OMP Race seat
Schroth 6 point harness
Custum made dash
Need a litle bit more space in the enginebay:
Making of new console:
New pedalbox:
Modifing of trunk:
New exhaust manifold of Inconel steel. Handcrafted of Mr Neil Clarke in UK.
After about 50 houers of grinding this is the look of underneath the car:
Right side front:
Firewall and backwards:
Trunk:
Right side:
It ain't only the car that changes color...
Some brackets for fuelcell, oiltank and battery in the tunk:
The car's at the paint shop:
This was on Sunday this weekend, now I'm back in my garage to finish the rest.
Last edited by Sjobing; 14 September 2009 at 03:35.
Contact Matt and Olly at RCM (Roger Clark Motorsport)
They are very helpfull and will be able to help you with your dry sump.
So is the car just for Breisladd, gatebil etc?
I have bougt parts from them for a few tousand quid and I have got very good service when I've been bying stuff from them, but when I've asked about their dry sump system on the Gobstopper I haven't got any answers...
No, this car will NOT go into Gatebil. I'm not a fan about how they do things at their meetings, I think things are way out of control there and think they have been lucky that not have had any serius accidents yet.
I will use the car for some circuit racing, hill climbs, and other trackdays than Gatebil.
If I get everything sortet out and have the time for it maybe I will go to UK and drive a Time Attack round there.
Excellent project mate, liking the attention to detail.
Good choice of exhaust manifold too, Neil made me a stainless one for my last car to suit a std position turbo, got to be one of the nicest pieces of fabrication i've ever seen.
More info here Inconel & Stainless Subaru Impreza Exhaust Manifolds & Systems
Amazing job of the car, nice to see such attention to detail..
Im interested, in one of the first "repaired" pics, there is a bit cut out of the right hand front wheel arch in the engine bay, that is then reshaped.. what's this for? thanks
Finally some parts I've been waiting for quite long now has arrived:
I've tryed to order the Cosworth drysump, buth they couldn't deliver so I asked Tony Rigoli in Australia instead and they made a kit for me in 3 weeks.
Maybe I can get some more work done on my engine this weekend and put it in the car next week.
Amazing job of the car, nice to see such attention to detail..
Im interested, in one of the first "repaired" pics, there is a bit cut out of the right hand front wheel arch in the engine bay, that is then reshaped.. what's this for? thanks
This is made to get more space for the pipe from turbo to intercooler.
tbh this is what we all would like to do, great read and attention to detail is amazing, god knows how much this is costing, but all the best i will read every update
Impreza HTS (Norwegian build STi V8 with Cosworth engine)
looks like this is going to be another epic build thread.
