BMW V8 dry sump from billet

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AdeV:
Cool, I'd thought of getting one of those cheapie keyring ones, cut off the keyring, and it looks like it ought to go in a collet. I'll get some ordered :thumbup:

The only downside is, Staples want £40 minimum for a pointer, vs. less than £2 on eBay, so I'll just set up as best I can without a laser for now.
After all, it's not like it's my sump! :lol:

crankshafter:
Hi Ade.
Nice work
Laser edge/senter finder, have a look at this, fits in your colett
http://littlemachineshop.com/products/product_view.php?ProductID=2604
CS

kvom:
I'm wondering how rigid the head is when set at 90 degrees like that. Perhaps some additional support would be a good idea. :scratch:

For setting level, some drill rod in a collet checked with the DI seems like a reasonable approach

AdeV:
CS: $85!!!! Wow, that's clean out of my budget... I'm sure it must be possible to rig up a holder for one of those cheap "cat toy" laser pointers...

:proj: strikes again...

Kvom: It's not bad, actually, so long as you clamp the head bolts down nice & firmly. Yeah, there's a fair amount of weight on the backside, what with the motor hanging off it - and changing the speed is a bit of a pain (needs at least 3 hands, 5 would be better). The Bridgie is obviously designed to take such arrangements, as apparently there's an oil modification you need to do if you plan to leave the head on its side for a significant period of time (typically, "significant" is not defined: Is it an hour? a day? a week?). At any rate, I managed the three wax holes & 1 aluminium hole without any apparent issues; so I'm not overly concerned right now. Ask me again in about 10 hours..... my reply might be a bit different... :zap:

AdeV:
OK, tonight's update; and due to a late finish, it's pretty brief I'm afraid. I spent ages setting up, using a dial indicator to try to get the sump straight & true:

Then using a piece of 5/8" mild steel rod as a crude edge finder:

Finally, I am ready to take the plunge & start drilling. I can't reach as far as the work piece with a centre drill, so I'm just having to chance that the 7mm drill won't wander too badly. It seemed OK:

These holes were then opened out to 1/2" (biggest drill bit I've got with a straight shank), and finally milled to 5/8" with a cutter held in the chuck - the only way I could make it reach the sump:

....and that's the last of tonight's photos. I went ahead & drilled the shortest hole (238mm), and the longest (483mm). I videoed the long hole, it's loading onto the computer now & I should be able to edit it down sometime in the next couple of days... I thought you'd prefer a video to some stills...

Right, offski. Haven't eaten yet, and it's gone 11pm :bugeye:

:thumbup:

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