BMW V8 dry sump from billet

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Divided he ad:
Nice super high set up :bugeye: :jaw: :bugeye:

It's definitely looking more like a sump every day :thumbup: Always a bu663r when you run out of "Y" :bang:

Ralph.

Rob.Wilson:
:clap: :clap: :clap: :clap: :clap: :clap: :clap: Nice one Ade :thumbup: ,, How many hours do you reckon you have in the sump up to now ?

Cheers Rob :thumbup:

AdeV:
Ralph - it IS a bit high, isn't it? Fortunately, it's also exceptionally heavy... I can only just get the rotab on the mill unassisted, and the angle plate's not much lighter; so I wasn't worried about stability. And i didn't even think about the maximum load on the mill until just now :doh: but I think it will be OK...

Rob - I honestly don't know... but if you count the initial carving up of the ali block, then there's maybe 35-40 hours so far. A lot of that is fannying about, mind, working out how to do stuff, and poking at my rusty trigonometry abilities to try to get some angles out. I expect future sumps (mine is next :dremel:) to be a lot quicker in the making.

One thing I still haven't looked at is the whole structure which goes at the back of the sump (where the tabs are sticking out).... that's going to add a few hours...

Rob.Wilson:
Hi Ade

Thats not bad going :thumbup: ,,,,,,,,,,, nothing wrong with a bit fannying about,,,its some thing i excel at :lol: :lol: :lol: ,,,,,and your going to do it all again :bugeye: :bow: :bow:

Wonder what the sump will weigh when all is done ? what i mean is how much of the original stock has been removed ,,,fare bit i reckon :dremel:

Cheers Rob

AdeV:

--- Quote from: Rob.Wilson on July 18, 2010, 06:54:04 AM ---
Thats not bad going :thumbup: ,,,,,,,,,,, nothing wrong with a bit fannying about,,,its some thing i excel at :lol: :lol: :lol: ,,,,,and your going to do it all again :bugeye: :bow: :bow:

Wonder what the sump will weigh when all is done ? what i mean is how much of the original stock has been removed ,,,fare bit i reckon :dremel:

--- End quote ---

I don't mind doing it again... I learnt lots doing the wax model, I've learnt lots more doing this version, and doubtless I'll learn even more on my version. With any luck, I'll have the machining times down to something sensible by then, and I can offer the sump as a commercial item on which I can make some actual money.... maybe. I think I might need a CNC machine to do that justice...

As for the weight: You're right that there will be a lot less metal when I'm finished, although just how much remains to be seen. The customer is hinting that he'd quite like it to be finned, which will obviously mean it's heavier than a non-finned version; but compared to the original block, much lighter. I'll weigh it when I'm done, and I have a similar-sized block waiting in the wings, so I can give you a good idea.

Meanwhile, tonight's mercifully brief update is as follows: I turned the sump around on the rotab & cut the remaining three oil guides. Then cleared the mill of ancillaries, bolted the sump end-on, aligned, and chopped the back edge to dimension. I also took the sharp bit off the pointy tab, so it's a bit more symmetrical.

Here's the sump as I'm taking the second of 3 finishing cuts, using my super-long 18mm cutter:

And the same cut, from the other side:

Finally, after cleaning everything up a bit, I glued the 3 plugs into the front. They'll need at least 24 hours to cure properly, fingers crossed that the Loctite does it's stuff...

More news as it happens... :coffee:

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