Classic Mini DIY: Rebuilding a Classic Mini Rod Change Gearbox #2

Beginning in 1968, all 4-synchro boxes had a split needle roller bearing under 1st gear.

Large bearing that carries the first motion shaft in the classic Mini gear case starting in 1968-on

Large bearing that carries the first motion shaft in the gear case starting in 1968-on; made by RHP

Aftermarket version of the split needle roller bearing used under 2nd and 3rd gears in 4 synchros starting in 1968.

Small bearing with barrel rollers at the outer tip of the input gear-first motion shaft assembly. Aftermarket.

Small bearing with barrel rollers at the outer tip of the input gear-first motion shaft assembly. Made by RHP.

Two of these are needed in 4 synchro laygears before 1979, and only one for later A+ gears. Fits first motion end of laygear. Sold each.

Small caged needle roller bearing fits both ends of laygear on 3-synchros and 1st gear end of 4 synchros to 1979. Sold each.

Starting in 1979, the layshaft was revised and a new needle roller bearing was fitted at the first gear end. This bearing is also used on the end of the

The AAU1365 double row ball bearing supports the mainshaft in the center web of the gearbox. We stock the correct bearing with full-width outer race for best reliability.

Double-row ball bearing supports the mainshaft in the center web of the gearbox. We stock the correct bearing with full-width outer race for best reliability. Manufactured in Germany by RHP.

Circlip, or stop ring, around the AAU1365 double ball bearing on the mainshaft.

Detent Ball. 3 & 4 Synchro Gearbox.

Detent Spring inside of synchro hubs in 4-synchro gearbox. Use six (6) per gearbox. Sold each.

Shift fork for third-fourth gear for rod change transmission from 1973-on.

Transmission synchro ring as used from 1963-on. CNC-grooved for correct shape and machined for concentricity using the original-type fixings to get the correct areas of heat treatment, plus correct degree of angles on specific areas. Aftermarket product made from Rover drawings. Sold each.

This synchro ring is CNC machined, heat treated and finally grooved for accuracy and concentricity, providing an exceptionally strong ring similar to those produced by BMC in the '60s.

First/second gear synchonizer hub assembly for all 4-synchro tranmissions. Replaces 22G2263. See also DAM7455-RING for outermost slider ring only.

Reproduction first/second gear synchonizer hub assembly for all 3-Synchro B-Type transmissions, including the classic Mini Cooper S