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Gearboxes
Vintage Racing with a “Ribcase” transmission
Created: April 19, 2018
The world of Vintage racers seem to be ever expanding and so does the use of the venerable Ribcase transmission. A set of Close Ratio Straight cut gears can make a big difference in performance and driving pleasure.
Ribcase Gearbox Rebuild Video
Created: April 19, 2018
Video on Rebuilding Gearbox for your Sprite or Midget
Common Ribcase transmission problems
Created: April 24, 2014
The "Ribcase" acronym for the gearbox as found as stock in most later '60's and '70's. The original design parameters were conceived around a small displacement low torque and horsepower engine and the "Smooth-case" transmission. The demands on this gearbox were well within design limits. Over the years the engines got bigger and bigger as did the weight of the cars they were installed in.
Limited Slip Differentials, C-BTA1226
Created: January 30, 2000
When most folk talk about limited slip differentials for cars with a BMC rear end, the minds immediately turn to the "Salisbury". Indeed many think that word covers any LSD for a BMC. This of course is not so. The Salisbury diff was designed in the 50's at a time when race cars were not sophisticated, tires were usually crossply with limited grip due to port compounds, and tracks were more than a little bumpy. Agriculturally built cars needed diffs built along similar lines. High static loads were more than common to help compensate for shortfalls in chassis and tire design -
Quick-shift kit for Ribcase Gearbox, C-22G328
Created: January 29, 2000
Read this instruction sheet thoroughly and check kit inventory before starting installation!! Remember, if you have a 1500 Midget, this kit will not work!!
Five Speed Conversion for Spridget
Created: January 29, 2000
Perform the shop work required to do this installation using good shop safety and workmanship practices. Reference to a quality Sprite/Midget service manual will be required. PURCHASE MATERIALS Purchase a five speed transmission from a 1979- 1982 Datsun 210. These can be confirmed as correct by both the input and the output shafts being 13/16", 18 spline. With the transmission get: gearshift lever, throw out bearing carrier and fork; and for exchange purposes get the output yoke (driveshaft front yoke).