BMW V8 dry sump from billet

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Divided he ad:
Ade,

What thread has it got in your collet chuck and where abouts are you? (PM if need be)

You see I've got an ER32 collet holder with a body a bit too long for my machine bout 100mm (or looks at least twice the length of body to yours) nut to the start of the moarse.... I'll have to measure it correctly, but I'm going to play pool in about 10 min's.

Anyway, I only got it 8-10 months or so ago and it's only been used about 5 times (not much shop time at all last year :( )

You can see were I'm going with this can't you??

Just a thought, no need for wobbly extensions :)

Ralph.

Jasonb:

--- Quote ---a 5/8" bore WILL go through a 3/4" BSF thread, with a "generous" 0.018" wall thickness
--- End quote ---

The difference in bore and core dia is 0.018" which only gives you a fag paper 0.009" wall thickness as you need to divide by two. Also you can have a radius on the end of the tool which will help with strength as it reduces the stress raisers.

If you can only use 3/4" BSF then I would not take the bore over 9/16"

May also be worth having a slightly raised lip on the stub for the hose to reduce the risk of it sliding off even with the clamp tightened

Or you could push the boat out and get some Aeroquip fittings ::)

Jason

Jason

jim:
jsut a quick question about the hose fittings.

are you intending to use ally? if so i'd be inclinded to buy some in, as mentioned previously.

you've done a fantastic job so far!

AdeV:
David, hmm, light cuts you say? I guess 0.030" in ali doesn't count as light, no? :zap:

Ralph - Collet chuck has a 7/16" BSW thread (because, obviously, that's in SUCH common use these days...), and is about 15cm full length (including taper). I'm based just across the river from Liverpool (just off the Wirral end of the M53 motorway). Certainly I'd prefer not to be messing around with extensions, if I can help it.... and yes, I think I can see where you're going with your thinking... :beer:, no wait, :dremel: I mean...

Jason - thanks for the calcs. I'm not sure there's any kind of radius on my single pointing tool (it's very pointy). I chose 3/4" BSF as I happen to posess a full set of taps (taper, 2nd & plug), which I don't have for any other size of hole. And because, nominally, it's able to take the 5/8" hole....

...but, as it's so close, I think I'll try Plan B: I'll use a straight shank on both ends, and some Loctite to retain it in the sump. As the oil pump & sump don't move in relation to each other, there shouldn't be much repetitive strain going on, maybe some vibration, but no major pulls & pushes.

Jim.... buy? Buy!? How very dare you! :lol:

Purchased fittings will be the choice of last resort... I'll make 'em out of Stainless if I have to...

Jasonb:
I think I would be happier with a thread rather than loctite but go for a finer pitch in metric something like M18x 1.0 or 1.5 or you could use 3/4 x 16 UNC. Maybe even 5/8 BSP as this is designed for 5/8" ID pipe.

Jason

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