I rebuilt a '82 Spectre 750 motor, it has the same holes.
Since mine motor is a Canadian spec unit it came without the pollution equipment, so I did not think to tap and install a plug of some sort - bad idea! It leaked on one side of the cam cover really badly. Since the head was already on a fresh rebuild I decided not to mess with any tapping (would be just my luck to get shite in the motor) so I opted to cut a new cam cover gasket and around that plug hole I put some RTV on both sides of the gasket paper which formed a very good seal. This fixed my massive air leak which made it run shitty.
If the head ever comes off again I will tap those holes for sure!
1978 KZ650B2 w 1197cc Z1 engine
1977 KZ650B1 w 750cc Spectre engine
1979 KZ650C3 w 831cc Hot Rod engine
1978 KZ650C2 w 762cc DFI project
1977 KZ650C1 stock restoration project
1978 KZ650B2 modified project
1978 KZ650B2 Injected Drag 831cc
1980 Z1 Custom Frame Drag 1327cc
1981 Z50R Honda tow bike
Last edit: 04 Jan 2022 13:50 by Injected.
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