11 May 1500 Block Walkthrough
MG Midgets used the same engine as the Triumph Spitfire by the late 1970s, when BL decided to install the Triumph 1500 unit in both cars. Here’s a very informative video of what a 1500 looks like after it’s imploded, and some discussion of useful modifications such as expanding the oil gallery to the centre main bearing (and 2 inner conrod bearings) to 5/16″ from 1/4″.