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 180bhp.

Uprated Oil Pump, Main\Big End Bearings, Steel H-Pattern Con Rods, Pocketed Forged Pistons, RPM Limit raised to 7750rpm. Estimated 180bhp + 25hp Nitrous Oxide

Current Map

The current map still has some work to be completed as it's a little lean at the bottom end but feels quite good overall so I have made it available for download.

Front Gearbox

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.

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

0 mm

0mm

0mm

1.5 degrees negative

1.5 degrees negative

1mm In

1mm In

2mm In

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 also increased the rear toe slightly from 0.75mm to 1mm. 

I'm hoping this setup will be ok now and it felt quite stable on the drive home from the alignment.

The suspension on stock mini AVO springs was found to be too soft, I have now fitted some 500lb springs.

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 Engine Only(180bhp)

Front and Rear Engines (360bhp total)

Front Engine Only (180bhp + LSD)

Front and Rear Engines (360bhp total + Front LSD)

3.859 seconds

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

Front Engine Only(180bhp)

Front and Rear Engines (360bhp total)

Front Engine Only (180bhp + LSD)

Front and Rear Engines (360bhp total + Front LSD)

9.428 seconds

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

Front Engine Only(180bhp)

Front and Rear Engines (360bhp total)

Front Engine Only (180bhp + LSD)

Front and Rear Engines (360bhp total + Front LSD)

2.071

5.408

8.246@90.83

10.572

12.489@118.73mph

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

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

Mini Showdown 2006 - Shakespeare County Raceway

2.098

5.487

8.368@87.48

10.698

12.695@115.39mph

Used only 2nd and 4th Gear, normal 175\60x13 Falken road tyres