Classic Mini DIY: Super Bad Wolf #12 - Wrapping Up (Most of) the Gearbox

This steel 4-bolt center main cap is the best way to counteract the flexing of the classic Mini's 3-main bearing crank, and is considered a must for race application. Fits all 1300 A+ or Austin America blocks.

5-speed rod-change transmission with straight-cut gears and standard diff.

Billet EN40B steel crankshaft made in the UK, to fit an original 1071 Cooper S block.

Center main bearing cap kit for A-Series or A+ 1300 blocks (not for Cooper S). Strengthens the center mail bearing cap.

Center main bearing cap kit for 998 and 1098 blocks. Strengthens the center main bearing cap; requires machining the cap flat before installation.

Close ratio helical-cut gear set for A+ transmissions featuring the same ratios as the C-STN39 straight-cut gear set. Ref: C-STN48, C-STN38.

Standard 190mm clutch disk for 1990-on 1275 classic Mini Verto installations. Ref: GCP90832AF, C1644AF, UQB10028EVA.

Three-piece clutch kit for 1982-1990 Minis, or classic Minis updated with this or a Metro power unit. Ref: CK9035, STF0108E.

Complete clutch kit for 1275-on classic Minis with 190mm clutch disc; will fit all fuel-injected classic Minis also. Ref: GCK2123AF, GCK152MS, CK9378.

New forged A+ 1275 crankshaft; bolts directly into classic Mini 1300, Austin America, Mini A+ or Metro engine block. Ref: CAM6232, BHM1437.

Forged EN40B crankshaft to fit 1300 or A+ block, but with rod journal size to fit Cooper S rods. Ref: C-STR932.

2.95 crown wheel and pinion set; reduces your RPM at a given speed, so will allow quieter and more economical highway driving. 20/59 tooth count

Quality transmission gearbox set, suitable for rod change or remote gearboxes. Ref: AJM804B, GEG0804, GUG708010TS.

Close-ratio straight cut gear set for the classic Mini 3-synchro transmission. Includes first motion shaft, 2nd and 3rd gears, and laygear. Ref: C-AJJ3371, M3SGK.

Aerospace quality ARP main cap bolt, extra length, for use with center main cap reinforcing strap. For 1300 and A+ blocks. Sold each.

Stock replacement oil pump for the 998cc A+ engine, with the slightly shorter drive tongue compared to the 1275cc. Ref: GLP139, AHU1050.

High-quality steel-backed replacement pump for 1275cc A+ engines. Ref: GLP138, CAM6036, AHU1048.

Oversize pump originally developed for the Metro Turbo; can be used in other slot drive applications requiring more oil volume. Ref: GLP110, GLP110MS, CAM6614.

Lightweight die-cast piston for 1275cc A-series and A+ engines, featuring a 6.5cc offset dish. Ref: C-STN100, C-STN100-20, C-STN100-40, C-STN100-60.

Machined set of steel main caps, featuring a 4-bolt center main. A must for high-revving race engines!