I've been working on a replacement for my 80's primary engine earth cable linking the neg terminal of the main battery direct to the connection point at the bottom of the 1hz engine block. This is what the end fixed to engine looked like until I took it off yesterday:
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The bolt is a short M10 fine thread (not sure yet of exact pitch) with a 14 mm head. The big washer is captive to the bolt.
I had an aftermarket new battery lead with a straight (not 90 degree) lug so have worked that up into a substitute while I source some 25 mm sq welding cable and suitable lugs to make up a proper replacement.
I cannot work out from any of the 80 series part listings what the factory p/n is for the bolt or the main cable to the battery, or for the main cable from battery + to starter motor, but all of those can be replaced with custom-made cabling. Welding cable is very flexible so good to work around other stuff but normal high-current AC mains cable as used in industrial sites, mines, etc. probably works just as good.
pic page
The bolt is a short M10 fine thread (not sure yet of exact pitch) with a 14 mm head. The big washer is captive to the bolt.
I had an aftermarket new battery lead with a straight (not 90 degree) lug so have worked that up into a substitute while I source some 25 mm sq welding cable and suitable lugs to make up a proper replacement.
I cannot work out from any of the 80 series part listings what the factory p/n is for the bolt or the main cable to the battery, or for the main cable from battery + to starter motor, but all of those can be replaced with custom-made cabling. Welding cable is very flexible so good to work around other stuff but normal high-current AC mains cable as used in industrial sites, mines, etc. probably works just as good.