Hello peeps!
Yesterday a big box of nuts and bolts arrived and I've spent some time testing they're correct with the right threading, fit spanners and all that and everything seems to be fine. Even the nyloc nuts which are finally correct and work well.
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5/16unf by 3/4 hex head
Titanium weight = 6grammes
standard steel weight = 10.2grammes
Weight saving = 4.2grammes |
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3/8"Titanium nyloc nut |
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5/16unc by 1 inch long titanium bolt |
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5/16unf by 3/4" long titanium bolt
This bolt is used to bolt the timing
cover to the Classic Mini engine block. |
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Classic Mini radiator to gearbox titanium
bolts.
5/16unf by 4 1/4"long
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Here is the A series clutch cover. As you can see I've added some lovely titanium bolts and I'll figure out the weight saving at a later date.
To help those people out who take their engine apart and find they can't remember which bolt goes where or if it's a coarse thread or fine thread bolt goes in what hole, I put the bolt sizes in the key with a corresponding colour. If I've got any of these wrong please tell me. Both my engines are second hand and could have been tinkered with and had wrong bolts installed over the decades. |
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This is a bracket that is under the radiator and bolts to the Mini gearbox. It has a solid engine mount fitted to it.
The 4 1/4"long bolts can be changed without taking the engine out as long as you change the bolts one at a time. To change the small bolts you'd obviously need to remove the engine, or maybe if you're changing the engine mounts life the engine a bit from below with a jack.
Weight saving using Ti 5/16unf by 3/4 hex bolts = 21grammes
Standard steel 4 1/4" bolt weight = 44.2 grammes
Titanium 4 1/4" bolt weight = 24.1 grammes
Total weight saving = 40.2 grammes(2 bolts) |
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5/16UNC by 1 3/4 Titanium bolt which fits on the A series gearbox
Weight = 11.9grammes
Standard steel bolt weight = 21.8grammes
A 9.9 gramme weight saving using the titanium bolt |
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The bolt in the picture above this one fits inside the clutch housing and the locations indicated. The original steel bolts I took out were in quite a bad shape. I think the gearbox has been changed sometime in the past. I think this size bolt is used elsewhere on the Mini engine.
The Titanium bolts pictured give a 69.3gramme weight saving over the steel bolts. |
That seems to be all for now. I'll bundle some of these bolts as kits and try and keep the prices as low as possible as always.
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