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Z650 / GPz engined Restomod
- Bevelhead
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18 Apr 2024 14:54 #897801
by Bevelhead
Replied by Bevelhead on topic Z650 / GPz engined Restomod
With the engine cases back from being ceramically coated, loosely put them together to see how they look. Cases are empty of course, though I have lapped and refitted the valves. The original alloy plugs on the end of the oil galleries of the head have been removed, to make sure the galleries were clear of any blasting grit, then replaced, the larger ones with new alloy plugs and the smaller with stainless 8mm grub screws.
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18 Apr 2024 14:58 #897803
by Nessism
Replied by Nessism on topic Z650 / GPz engined Restomod
Your engine looks nice.
And solid call on removing the oil galley plugs for a proper clean out.
And solid call on removing the oil galley plugs for a proper clean out.
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18 Apr 2024 15:00 #897804
by Bevelhead
Replied by Bevelhead on topic Z650 / GPz engined Restomod
Despite the engine not having been run since 2000, it was in good condition with little apparent wear, except for one thing.. the splines on the output shaft were badly worn. The engine came from a bike that was fitted with lighter CMA wheels many years ago, and these wheels didn't have a cush drive. Either this or a loose sprocket must have caused the damage.
Since I intend to fit a 5.5 inch rear wheel and 180 tyre, I bought a complete transmission from a later ZR7S, which has a slightly longer output shaft, while being surprisingly cheap..
ZR7S transmission..
Since I intend to fit a 5.5 inch rear wheel and 180 tyre, I bought a complete transmission from a later ZR7S, which has a slightly longer output shaft, while being surprisingly cheap..
ZR7S transmission..
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25 Apr 2024 03:53 #898100
by Bevelhead
Replied by Bevelhead on topic Z650 / GPz engined Restomod
The following user(s) said Thank You: Mcdroid, calum, howardhb, Stereordinary, Wookie58, Rolf1976_KZ900
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04 May 2024 02:57 #898426
by Bevelhead
Replied by Bevelhead on topic Z650 / GPz engined Restomod
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12 May 2024 10:59 #898927
by Bevelhead
Replied by Bevelhead on topic Z650 / GPz engined Restomod
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20 May 2024 12:52 #899390
by Bevelhead
Replied by Bevelhead on topic Z650 / GPz engined Restomod
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10 Oct 2024 08:32 #904995
by Bevelhead
Replied by Bevelhead on topic Z650 / GPz engined Restomod
The ZR7S gearbox has bigger end bearings on its input and output shafts, and it wouldn't fit the GPZ750 cases. The shafts are the same diameter, but didn't want the hassle of stripping both the old and new shafts to change the bearings, with the risk of something going wrong. So picked up another transmission, this time from a Z750E, in excellent condition for only £30. Its fits fine.
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02 Nov 2024 14:38 #905698
by Bevelhead
Replied by Bevelhead on topic Z650 / GPz engined Restomod
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