GPz550 H1 EFI Conversion
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Re: GPz550 H1 EFI Conversion
05 May 2026 16:18Just checked, the 550 doesn't have the bung, it'll be easy enough to drill and tap a small M5 hole and make an ali bung that I can bolt to the headYes it was crimped but very lightly then secured further with heat shrink. I was afraid I would crush it so I measured it and ground a nail the same size to slip in the the end of the lug ID then crimped. The heat shrink sealed the end off, that is why I have it zip tied to that aluminum piece so it does not get yanked out. The round aluminum is a stand off for the sensor mount location on the head.
I am using a later 750 Spectre head that has the same cast lugs on it as the GPZ750 Turbo only its not drilled and tapped. Below is a pic of the temperature fitting on a turbo head.
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Re: GPz550 H1 EFI Conversion
Yesterday 05:36
I think that putting it in a thicker mass down by the combustion chamber is better than up on the cam cover. Kawasaki designed and located those cast bosses in that area for that specific purpose.
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
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
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Re: GPz550 H1 EFI Conversion
Yesterday 06:17That's exactly where I've got it marked out in the pictureI think that putting it in a thicker mass down by the combustion chamber is better than up on the cam cover. Kawasaki designed and located those cast bosses in that area for that specific purpose.
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