Rover PG1 gearbox

Various Gearboxes have been used in the Lotus Elise and often they are not possible to identify from the exterior as the housing appears the same. This said there should be a serial number on the unit;

Rover PG1 Gearbox Numbers:

C6BP.... Standard box for Elise Mk1 and MGF

C4BP.... MGF VVC box (as standard but final drive 4.2)

B4BP.... Lotus CR box, Elise Mk1 111s + Elise Mk2 standard box

B4BPU... Exige S1 (uprated)

B4BPQ... Exige S1 with LSD

G6BP.... Elise S2 111S

XnYY where "X" is the gearset, "N" is the Final drive and "YY" is the Diff (BP=Open BPQ=LSD)

Car	PG1	1	2	3	4	5	Final
S1 "standard"	C6BP	3.167	1.842	1.307	1.033	0.765	3.938
S1 111S & S2 "c/r"	B4BP	2.923	1.750	1.307	1.033	0.848	4.200
MGF vvc	C4BP	3.167	1.842	1.307	1.033	0.765	4.200
S2 111S "long"	G6BP	3.250	1.895	1.308	1.033	0.848	3.937
Eliseparts		3.167	1.842	1.410	1.100	0.910	3.938
Carlo's (ideal)	*6BP	2.923	1.750	1.307	1.033	0.765	3.938
Exige S1 uprated	B4BPU	2.923	1.750	1.307	1.033	0.848	4.200
Exige S1 with LSD	B4BPQ	2.923	1.750	1.307	1.033	0.848	4.200

Gearbox oil used are:

• Texaco MT94
• Castrol TAF-X
• Castrol SMX-S

Other sources of information

Quaife

ATB DIFFERENTIAL