With regard to engine number on the bonnet flange, mine reads 1964 1694. The latter number being the last four digits of the engine number on the V5. No idea what the first number is unless the guy got the digits reversed and didn’t have an X to cross them out! Thanks for pointing out where the number is as I thought that the bonnet had been replaced as it doesn’t fit well.
Regarding the carb I’ve just found the pipe to the distributor has a massive split in it where it fits to the carb so probably a weak mixture.

Where will I find the jet sizes for my ‘74 4/4 documented if they are application specific.

Last edited by thelastgizmo; 28/06/22 01:02 PM.