I would like to warn those rebuilding their late ( August September 1973 ) XU-1 engines, or building engines retro fitted with the Star-fire, or late red, Blue/Black con rods that the big end torques quoted in many workshop manuals are incorrect.
The correct torque is actually 35ft lbs,( 48Nm ) not the quoted 25ft lbs ( 35Nm ).
I have struggled to find any period publications between 1973 and 1983 that have the correct specification, note not even some for the Star-fire 4. Even one publication quoting Holden as their source have the wrong specification.
I discovered this in the early 1980's. Mike
