Prior to having Dave Rowe tweak the Motec at Silverstone Time Attack

 

PROJECT UPDATE

A big chunk of the modification work has now been completed by RCM.

From the initial 310bhp when I purchased the car, then Matt got to work on a major engine rebuild that was restricted to 400ish until the brakes, suspension, gearbox & clutch were upgraded.

We are not sure of the exact power at the moment but it would be much nearer 500 than 600 at present. A dyno will be done in the near future, but as I am quickly learning from many guys, bhp is not a major factor.

Whilst speaking Matt & Dave Rowe (Motec) at Silverstone they both advised me that there is a lot more power if required , regarding several routes.


I realise that this thread is read by many, ranging from the Pro's, to a few other guys with insane modifications, and to many who have started to mod or thinking of doing so.

It proves good when you gradually modify, as you learn the power increases well. Having always used it as my own car (not locked away for events), this is what I found with the power increases in my classic Impreza (as a road car).

300bhp
Good fun, and you realise that you have some power.
Braking distances seem normal, and traction not a problem.
Fuel economy good, handling impressive.


400bhp
I did not know what to expect regarding power difference and the first time I drove it off boost the power delivery was slightly quicker. The first time I used boost I noticed a huge difference. You remain pinned for longer.
Braking distances became much shorter, and the gap in front to the next car needed to be a lot longer before giving it some.
Traction in dry really good, but in the wet had traction lose in 2nd,3rd & 4th gears (in a straight line) when boosting up.
Fuel economy still very good. Not a huge difference from 300.


400bhp with modified brakes / suspension
AP Racing & EXE-TC turned the car into a dream to drive.

500+bhp
The difference between 300 & 400 is huge but nothing to this.
When you have "a genuine" 500+ in a Classic Impreza, its mayhem.
Off boost is fantastically smooth & easy to drive. Off boost performance seems the same as 400. The triple plate clutch takes a bit of getting use to.
The first thing I noticed was how different it sounded. From the noisy dump valve to a noisy waste gate chatter. Car is much louder too (one silencer).

At 4000rpm you are pinned from 2nd to 6th, really pinned. All I ever see the passenger do out the corner of my eye is try to nut the dash 5 times. It would prove similar to having a large pigeon as a passenger.
The acceleration in 3rd,4th,5th & 6th is truly amazing.
The braking distances are dramatically increased and you now need an empty road opposed to traffic up ahead. Fuel economy is amazingly high off boost. Track days will be around 3 Ltrs per minute !
Olly, Matt, Dave Rowe, Madhammer & MartiP1 all told me your driving styles need to change and that sums it up.
At 500bhp you fully realise it's brutal and respect jumps in.
At this point you wonder what The Gobstopper or Zen's car must be like to drive








Now that most of the mechanical upgrades are complete here is the complete and revised list of all modifications carried out by Roger Clark Motorsport.
I have not included all the minor bits & pieces.

WRC 14mm Stud Conversion
Hone Bore Clearance
Block Face Skim
Closed Deck Block Assembly
RCM Omega forged high compression pistons
Piston Ring Set
WRC 14/12mm head stud kit
14mm Head Dowels
RCM Port & Polish
RH Cylinder Head Assembly
LH Cylinder Head Assembly
Oil Cooler Modine
Oil Filter
RCM WRC Nimonic Exhaust Valves
RCM WRC Inlet Valves
Half Moon Seal
Subaru Crankshaft Assembly
Crankshaft & Flywheel balance
RCM uprated H section conrod
ACL Racing bearing main
Subaru Version 9 big end bearing kit
Engine Gasket kit
RCM modified Oil Pump
Big wing Sump
Big wing Sump modification
Double Valve spring kit
Double Valve spring spacers
Uprated Thermostat
RCM lightweight Flywheel
Smooth Idler
Water Pump Assembly
Toothed Idler
Timing belt tensioner kit
Timing belt tensioner bracket
Tensioner seal
Tensioner Pulley
Head Ream 14mm
RCM Titanium Retainers
Bucker shim
LH Inner Cam belt cover
RCM Vernier Timing Belt Pulleys
Timing Belt
Timing Belt Tensioner
RCM Manifold
Manifold fitting kit
Rocket Cover gasket
Rocket Cover gasket
Spark Plug Gasket
RCM Alloy Pulley Kit
Sti Engine Mount
Sti Engine Mount
Modified Gearbox Mount
RCM Oil catch tank
RCM Oil catch tank fitting kit
850cc fuel injectors
R.C.M. 3 inch S/ Steel Open Neck Downpipe
R.C.M. 3 inch S/ Steel Centre Exhaust section
R.C.M. 3 inch S/ Steel Rear Silencer
R.C.M. Air Induction System
Exhaust fitting kit
3 inch Exhaust Gasket x 2
RCM 76mm Induction Pipe
RCM Exhaust Manifold
Manifold fitting kit
RCM Air Induction kit
Samco Hose
3 Port Boost control solenoid
Uprated spark plugs
Lambda Sensor
SX fuel Pressure regulator
Uprated fuel pump
Nitrided Version 9 Crankcase assembly
RCM 76mm Induction Pipe
Motec M800 ECU
Motec logging memory (1 meg)
Motec Single Lambda support
Motec Lambda Adaptor
Motec Lambda Loom
Motec Bosch Lambda Adaptor
Motec 4 bar map sensor
Motec Air Temperature sensor plug
Motec Temperature sensor
Motec Air Temperature Boss
Motec Can adaptor
Defi Oil Temperature Gauge 60mm (white)
Defi Oil Pressure gauge 60mm (white)
Defi Turbo Boost gauge 60mm (white)
RCM gauge pod
Defi control unit II
Knock link display
Knock link sensor
APS 725 Series R Intercooler (9075cm3)
Subaru Radiator Assembly
Samco top & bottom hose kit
RCM cool panel guide
Fan pack
Bumper beam powder coated
Bumper beam reinforcement
Carbon Fibre inner wing panel
Radiator top mount rubbers
Alloy filler neck
OS Giken Triple Plate Clutch
RCM Hydraulic Release Bearing Kit
Clutch Balance
APR Flywheel bolt kit
6 speed gearbox assembly
Drainback Kit
Rear Diff Assembly
Hybrid Garret GT 30-37 Turbo
0.82 Exhaust Housing
44mm V Band Tial Waistgate
RCM Twisted Turbo Kit
Wingbox Assembly
RCM Air Injector kit
Twisted turbo Oil & Water kit
100mm Induction Hose
K&N Induction Filter
100mm Spun Trumpet
Dash 4 90 degree alloy fttg
Dash 4 90 fttg (s/steel)
Samco Intercooler Hose
RCM Header tank bracket
Motec Lambda sensor
Bosch (motorsport) 10bar fuel pump
RCM Sti Anti Fuel Surge kit

(some of the above items have been replaced)

To achieve 600bhp now is the easy bit.
A larger turbo, NOS and r/fuel or additives will sort that out, along with a few relating modifications.

For now, I am going to learn the car.
The more I drive it the more I realise how mad it is (as my road car), and what a fantastic job RCM have done.
I have not driven it in competition yet, but will be throughout the summer.

Come winter

 

That’s one hell of a spec sheet, amazing looking car and the fine detail and finish when I saw it up close was amazing and that was some way off its current state. Great write up as always, keep us posted on developments. Nice photo by the way

 

The acceleration in 3rd,4th,5th & 6th is truly amazing.
At 500bhp you fully realize it's brutal and respect jumps in.
At this point you wonder what The Gobstopper must be like to drive in.
Hope to find out soon.


You will find that you have adapted and changed your driving skills in a very short time.
You have a very nicely balanced and user friendly car Clive and you might find that the next jump up detracts in it's behavioral manor. And it will bit and bit HARD.

 

Just needs a real clean now.
Dazzler is the man for that. He will do his magic on the polish etc (wait until you see the before & after pix) This guy's meaning of "shine" is on another level.

This guy washes, styles and blow dries his foot mats seriously !

 

And uses hairspray to hold pattens in place. We kid you not.

 

Your right mate. Track days etc are smooth. Bumpy lanes and B roads are another ball game at this power.
I find myself looking at the road surface every time prior to booting it.
It snatched away twice in a straight line over bumps, and twice on a bend, all four times on boost, and it happens very quickly.
At 400 you could feel it begin to happen. At 500 your don' get any prior warnings.

Looking back on it 400bhp would have been the border line for road use. Lovely to drive, smooth and a perfect balance.

500+ on boost is a friggin party, and for the first time you realise it's now dangerous and the words "right off" crop up every now & again.

 

Hi all.
this my 1st post joined last night great site been reading lost of things on here for a few months on page 29 of 60 p1 600. I.E Skullfudge got STI Type R v4 it is pushing 375bhp scooby shoot out last year best time of the day was a dead 12.00 car number 33.

Stop polishing it and do something with it mad hammer would beat you in reverse if he had 4 gears Lol. Sweet car though but it appears him with the best toys dusnt always win

Knibby

 

its all lies

 

 

Give me a chance, only had it back for one week. Things will change

 

A fantastic car and a really good thread. Keep up the good work

 

Thank you Stu

 

Calling MARTI P1

Has Redline Magazine contacted you mate ?? (Richard White)?

 

We'll see chap You will need those winter changes first me thinks. Things never stand still though, I have a couple of plans brewing for 600+ for my car

Been away most of this week so missed the updates on here, seems Skull think this is his thread again with all these posts

Nice pics from the 'Pod day' looking fiorward to the next one.

 

Madhammer,


I'm waiting to see what Fai17's car does before I think about a turbo change I have been out in an evo with the same turbo fitted and I liked it

 

What Turbo is Fai going for ? Also when are you getting those injectors in ?

Clive

 

Fai17 is fitting the TO4z turbo, and it made 680bhp on an evo I was in

I could do with those injectors in now, but I have been told I need more fuel pumps and a swirl pot. Hoping to have it done sometime this month??

 

Umm that could be interesting.

What fuel pumps you running at the moment ?

 

I'm only running a bosch 044, I think the new idea is 1 intank walbro and 2 boot mounted walbro's or 044's

 

I only have a lift Walbro and 1 in line 044. Paul does a nice little swirl pot set up mounted under the rear arch to keep the boot clear. I would recomend that.

 

Have you got any pictures as I didn't like the idea of a swirl pot in the boot!

 

I used to have a 044 but now have the bosch motorsport pump. You can hear a big difference and they are meant to be really good.
The Gobstopper has them too.

 

Will get you a pic or 2 tomorrow mate

 

"Them" being the crucial part? There is no point in buying another fuel pump in the hope it will do when going twin/3 definately will do

 

Hi Clive,he has not contacted me ?

Did he say he was going to contact me ?

your car is in the mag soon
Marty

 

Nice one! Need to get this sorted so I can beat a certain car on Zens rollers

 

Right, been through my camcorder to find if we have one of Skull going quicker and I have found one ! Also has Sy but with a bad start and Marty when they noticed his oil leak on the line, well a full catch can . Also have my other 11.0 to show Skull that it can be done quickly





And mine

 

RWYB - Street Challenge - Tables 2009

Yr 5th now mad as im 2nd and 4th

 

Yeah, noticed that earlier Congrats on your TOTB place mate !