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.

Engine Status

Front Engine

Rear Engine

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

Current Map

This is the current 2009 map, 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.

Old Manual Transmission Setup

F20 Front Gearbox

F20 Rear Gearbox

Standard Vauxhall Shaft

Twin Cable Operated

Standard

Standard

Both clutches are 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.

4T40E Front Transmission

4T40E Rear Transmission

Standard Cable Selector, ??? ECU

Modified Cable Selector, ??? ECU

Standard

Standard

Notes

Work in progress

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

0.5 degree negative

0.5 degree negative

4 degrees positive

4 degrees positive

0mm

0mm

0mm

1.5 degrees negative

1.5 degrees negative

0mm

0mm

0mm

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.

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.

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+25hp Rear NOS) Automatic Transmissions

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

3.859 seconds

3.704 seconds

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

Used only 2nd gear, 888r Tyres

Front and Rear Engines (340bhp total) Manual Gearboxes

Front and Rear Engines (340bhp total) Automatic Transmissions

Front and Rear Engines (340bhp+25hp Rear NOS) Automatic Transmissions

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

9.428 seconds

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

Front and Rear Engines (340bhp total) Manual Gearboxes

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

2.071

1.980

5.408

5.297

8.246@90.83

8.152@90.06

10.572

10.505

12.489@118.73mph

12.457@116.01mph

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

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

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

Mini Showdown 2006 - Shakespeare County Raceway - Manual Gearboxes

RWYB Apr 2009 - Shakespeare County Raceway - Manual Gearboxes

2.098

2.108

5.487

5.459

8.368@87.48

8.338@87.40

10.698

10.646

12.695@115.39mph

12.684@114.71mph

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)