Bond Bug ZZR1400 Project

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BMW E36 318i LSD 2.93

S2930562
ggg 407254
gf 201059
1212951

ZZR1400 with BMW 318i 2.93 differential
Enter Max Useable Revs Gearbox ratios Maximum possible speed
Engine Revs 11600 1st 2.611 = 62.5
2nd 1.947 = 83.8
Enter Tyre Diameter 3rd 1.545 = 105.6
Wheel revs 21.90 (Inches) 4th 1.333 = 122.4
(tread to tread) 5th 1.154 = 141.4
6th 1.036 = 157.5
Enter Axle Ratio
Axle ratio 4.632 (=diff ratio x 1.581) Wheel Revs/mile 921

 

 

1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500
1st 5.4 8.1 10.8 13.5 16.2 18.9 21.5 24.2 26.9 29.6 32.3 35.0
2nd 7.2 10.8 14.4 18.1 21.7 25.3 28.9 32.5 36.1 39.7 43.3 47.0
3rd 9.1 13.7 18.2 22.8 27.3 31.9 36.4 41.0 45.5 50.1 54.6 59.2
4th 10.6 15.8 21.1 26.4 31.7 36.9 42.2 47.5 52.8 58.0 63.3 68.6
5th 12.2 18.3 24.4 30.5 36.6 42.7 48.8 54.8 60.9 67.0 73.1 79.2
6th 13.6 20.4 27.2 33.9 40.7 47.5 54.3 61.1 67.9 74.7 81.5 88.3

 

 

7000 7500 8000 8500 9000 9500 10000 10500 11000 11500 12000 12500
1st 37.7 40.4 43.1 45.8 48.5 51.2 53.9 56.6 59.3 62.0 64.6 67.3
2nd 50.6 54.2 57.8 61.4 65.0 68.6 72.2 75.9 79.5 83.1 86.7 90.3
3rd 63.7 68.3 72.8 77.4 81.9 86.5 91.0 95.6 100.1 104.7 109.2 113.8
4th 73.9 79.1 84.4 89.7 95.0 100.2 105.5 110.8 116.1 121.3 126.6 131.9
5th 85.3 91.4 97.5 103.6 109.7 115.8 121.9 128.0 134.1 140.2 146.3 152.4
6th 95.0 101.8 108.6 115.4 122.2 129.0 135.8 142.6 149.3 156.1 162.9 169.7

Projected speeds with ZZR gearbox, 15inch tyres and rear axle ratio. Max rpm 11600

ZZR 1400 engine (1441cc) - Max Power 200hp @ 10500 rpm

Max Power 210hp @ 10,500 rpm ram air

Max torque 113.2 ld-ft @ 7500 rpm

Bond Bug kerb weight 394kg + ZZR engine increase 60kg over original engine

New kerb weight approx 460 kg

Gives 434.78 bhp per tonne

Original Bug had 73.6 bhp per tonne

 

Rare as hens teeth to get hold of a LSD high power diff. I sourced a BMW one as it can handle up to 500 Bhp happily.

2 new BMW half shafts were sourced and had to be cut and shut to length.

The diff case was stripped back to just its casings, bead blasted and powder coated.

BMW 328i 3 Series E36 188 differential rebuild kit inc diff bearings & oil seals were bought and fitted during rebuild.

Hubs and swinging arms are MGTF

 

Assembled rear axle