Tuning, Setup and Tests

Car Component Status and Setting

This section will provide details of the current state of the front\rear major components. Namely the engines, gearboxes and suspension.

NA Engine Status

Front Engine

Rear Engine

Power

Uprated Oil Pump, Main\Big End Bearings, Steel H-Pattern Con Rods, Pocketed Forged Pistons, RPM Limit raised to 7750rpm. Estimated 170bhp.

Uprated Oil Pump, Main\Big End Bearings, Steel H-Pattern Con Rods, Pocketed Forged Pistons, RPM Limit raised to 7750rpm. Estimated 170bhp + 50hp Nitrous Oxide

DTA Map

NA Map

Notes

This is the current 2009 map based on TPS\RPM, it's quite stable and appears to be running well for fuel mix from cold start to full temp. This map did 176bhp on another car with same spec. Fuel Pressure at 3.4bar on XE Beige Injectors.

Turbo Engine Status

Front\Rear Engines

Power

Uprated Oil Pump, Main\Big End Bearings, Steel H-Pattern Con Rods, Pocketed Forged Pistons, RPM Limit set to 7250rpm (due to auto box limitations), Evo 7 Inlet, Evo Red 560cc Injectors, Evo 7 TD05HR Turbo. Estimated 200-220bhp.

DTA Map

Notes

The turbo map is based on MAP\RPM and is requiring pretty much to start from scratch. The map is based on the near stock XE compression of approx 9.8:1 and due to the high compression only 0.5 bar of boost and using stock Evo fuel pressure. I have been running the MAP a while now and it seems really stable, probably on the safe side on the timing front but good for the moment and the cold start is also pretty good so will upload a copy soon.

Old Manual Transmission Setup

F20 Front Gearbox

F20 Rear Gearbox

Type of linkage

Standard Vauxhall Shaft

Twin Cable Operated

Clutch Type

Standard

Notes

Both clutches were operated hydraulically.

The stock Vauxhall gear linkage at the front was shortened to suit the mini and the plastic gearstick cage was filed slightly on the sides to allow extra left\right motion.

Automatic Transmission Setup

4T40E Front Transmission

4T40E Rear Transmission

Type of Linkage\Control

Standard Cable Selector, PCS TCM2000 TCU

Modified Cable Selector, PCS TCM2000 ECU

Torque Convertor

Standard

Notes

Currently shifting at 7000rpm (6500rpm Stock) but this may be raised further based on feedback about reliability to 7250rpm.

Suspension Setting

Front Left Camber

Front Right Camber

Front Left Caster

Front Right Caster

Front Left Toe

Front Right Toe

Total Front Toe

Rear Left Camber

Rear Right Camber

Rear Left Toe

Rear Right Toe

Total Rear Toe

Adjustment

0.5 degree negative

4 degrees positive

0mm

1.5 degrees negative

0mm

Notes

After more testing the rear was still quite loose, the spring load was set quite high on the rear and I lowered it somewhat but then found the rear tyres scrubbed on the inner arches. To remedy this I have now raised the body an extra 20mm and this seems to have improved the rear stability quite a lot and the tyres no longer rub. As I had changed the suspension again it was again 4 wheel tracked. I decided to remove some of the front caster leaving approx 4 deg now and decreased the rear toe slightly from 1mm to 0mm.

The suspension on stock mini AVO springs was found to be too soft, the 500lb springs have improved the handling and stability greatly.

Performance Testing 1

Here will be various performance tests using a G-Tech RR device at different stages of the tuning and engine combinations.

I have used the Gtech for some time on different cars and found it to be quite accurate and consistent if supplied with correct RPM pickup calibration and vehicle weight settings. When used at Santa Pod it was consistently within 0.1sec \ 2mph of actual result from drag strip.

0-60 Tests

Front and Rear Engines (340bhp total) Manual Gearboxes

Front and Rear Engines (340bhp+25hp Rear NOS + Front LSD) Manual Gearboxes

Front and Rear Engines (340bhp total) Automatic Transmissions

Front and Rear Engines (340bhp+50hp Rear NOS) Automatic Transmissions

Front and Rear Engines (340bhp+60hp Rear NOS) Automatic Transmissions

Front and Rear TD05 Turbo Engines (200-220hp Each) Automatic Transmissions

Time

3.859 seconds

3.704 seconds

3.795 seconds

3.308 seconds

3.278 seconds

3.482 seconds

Notes

Used only 2nd gear, normal 175\60x13 Falken road tyres with passenger.

Used only 2nd gear, 888r Tyres

Normal 175\50x13 A539 Tyres, gear selection problem between 1st and 2nd on front engine.

Normal 175\50x13 A539 Tyres

Normal 175\50x13 A539 Tyres, 8psi boost, pre dyno optomisation

0-100 Tests

Front and Rear Engines (340bhp total) Manual Gearboxes

Front and Rear Engines (340bhp+50hp Rear NOS) Automatic Transmissions

Front and Rear Engines (340bhp+60hp Rear NOS) Automatic Transmissions

Front and Rear TD05 Turbo Engines (200-220hp Each) Automatic Transmissions

Time

9.428 seconds

8.277 seconds

7.895 seconds

7.624 seconds

Notes

Used only 2nd and 4th gear, normal 175\60x13 Falken road tyres with passenger.

Normal 175\50x13 A539 Tyres

Normal 175\50x13 A539 Tyres, 8psi boost, pre dyno optomisation

1/4 Mile Tests (Gtech RR, 12inch Rollout)

Front and Rear Engines (340bhp total) Manual Gearboxes

Front and Rear Engines (340bhp+25hp Rear NOS + Front LSD) Manual Gearboxes

60ft

2.071

1.980

330ft

5.408

5.297

1/8 Mile

8.246@90.83

8.152@90.06

1000ft

10.572

10.505

1/4 Mile

12.489@118.73mph

12.457@116.01mph

Notes

Used only 2nd and 4th gear, normal 175\60x13 Falken road tyres (approx 950kgs)

Used only 2nd and 4th Gear, 888r Tyres (approx 1020kgs)

Performance Testing 2

This will be actual results from racing events such as TOTB, USC, RWYB, Trax, Magazine Group Tests etc.

1/4 Mile Tests (Offical Drag Strip Timing)

Mini Showdown 2006 - Shakespeare County Raceway - Manual Gearboxes

RWYB Apr 2009 - Shakespeare County Raceway - Manual Gearboxes

RWYB May 2010 - Shakespeare County Raceway - Automatic Gearboxes

Performance Vauxhall Show June 2010 - Automatic Gearboxes

Performance

Vauxhall Show June 2010 - Automatic Gearboxes

RWYB May 2010 - Shakespeare County Raceway - Automatic Gearboxes

RWYB July 2012 - Shakespeare County Raceway - Automatic Gearboxes - TD05 Turbos

60ft

2.098

2.108

1.982

2.046

1.831

1.778

1.960

330ft

5.487

5.459

5.333

5.37

4.939

4.885

5.115

1/8 Mile

8.368@87.48

8.338@87.40

8.154@87.71

8.132@88.92

7.553@93.52

7.481@94.72

7.702@95.06

990ft

10.698

10.646

10.509

9.817

9.668

9.857

1/4 Mile

12.695@115.39mph

12.684@114.71mph

12.666@107.34mph

12.557@109.64mph

11.760@115.55mph

11.660@116.07mph

11.813@118.72mph

Notes

Used only 2nd and 4th Gear, normal 175\60x13 Falken road tyres (approx 950kgs)

Used only 2nd and 4th Gear, 888r Tyres, Front LSD and +25hp Rear NOS (approx 1020kgs)

Some gear selection issues sitting on rpm limiter for up to 2 seconds before shifing. A539 Tyres (approx 1150kg)

A539 Tyres (approx 1150kg)

A539 Tyres + 50hp Rear NOS (approx 1150kg)

A539 Tyres (approx 1200kg), 8psi boost, pre dyno optomisation

General Performance Tests