MGB + M42 = Win

[AndrewBird]

Made some decent progress on the oil pan. Started out making a jig to bend the outside walls of the pan. Basically it is two sheets of plywood with a few chunks of 2x4 to space them apart. Then all I had to do was bend the metal around it.



Out of the "form":


In place on the flange:


All the bends turned out perfect, I could be happier about how it worked. Only one problem though. Somehow it ended up about a 1/4" too short. So I have to make a new jig that is a bit longer and re-bend it. Oh well. We'll call this one the prototype proof of concept. ;)

Once I get one to come out the right shape, I'll trim the ends and weld the seam, then notch the back corner where the oil pump pickup is. After I weld it to the flange, I'll trim it to the correct shape height-wise and weld on a bottom, a tube for the dip stick and a bung for the drain plug.

[AndrewBird]

Got a bunch more work done on the oil pan. Outer wall is all welded into place. Still need to sand/grind everything smooth, but it's together!



All welded on the inside:


Lots of 1" long welds.


Small mistake I made. I didn't allow enough clearance for the bolt head/socket to fit, so I used a piece of tube to give me some clearance. That hole you see is going to be welded up.


Quite a bit of the height will be cut down. It is going to be similar shaped to an M20 with a large sump part and then a thinner section that will be made to clear the subframe. The thinner section is less then 2" tall and the sump part is ~1/2" less then the height it is right now.

I plan on getting it cut down, weld a bottom on it, and then start on the oil pump pickup. Need to install a tube for the dipstick as well, but that can come last.

[blalor]

Nice work! That cutout for the socket is really clever.

[DTM190]

Hey Nitro, did you bolt your flange to a flat surface while welding it? Reason I ask is that a place that I used to work made a lot of custom sumps/oil pans and they always bolted them to a jig while welding them to avoid the flange warping so that it seals nicely or are you planning to have it faced once you are done?

[AndrewBird]

I didn't bolt the flange to anything. It is 1/4" plate though, and with as slow as I welded it, it didn't warp (already checked it). I was very meticulous about it so it didn't warp.

[Matt-B]

Nice work andrew, very happy to see you shoe horning a m42 in a MG

I have a soft spot for MG, triumph, norton, etc :)

[freeride53]

That's some cool ingenuity. Love it!

[AndrewBird]

Lots more done tonight. Ground down all the welds so everything is nice and smooth. Then I cut the sides down to their final shape and started working on closing up the bottom. Got the first two pieces cut and fit, but need to buy a new cutoff wheel before I cut out the big piece. Also started working on the oil pump pickup.



Welds all smooth and rounded:




Sides cut:


Bottom plating:


The hole for the oil pump pickup:


The piece to box it in:


Sitting in place:


For the oil pump pickup, I plan on boxing it in with the piece I made and then running a tube off of the box down to the bottom of the pan. I'm going to build a flange that will bolt to the box so it will be removable so you will be able to replace the pickup if needed. I'm going to try and use a Chevy Astro Van pickup as it is big and flat and easy/cheap to get. Here it is here:

[DTM190]

Nice work mate, coming up well

[SpoolnDaapex]

That pan is looking great! :up:

[Jand3rson]

Got to see this in person tonight, and it looks amazing. Andrew's work is very precise!

[AndrewBird]

So I didn't like the look of any of the oil drain plug bungs that I could find, or if I did like them, they were aluminum, so I made one.





Sitting in a scrap piece of metal.


It will be welded to the pan on the backside. Uses an M12 drain plug. I'll probably get a different drain plug other then this one as it is kind of tall, but it worked for making the bung. Might just cut the head down slightly.

[Simon S]

Hot day-am! You do nice work.

[Jand3rson]

Heh heh... bung.

[AndrewBird]

Hot day-am! You do nice work.

Thanks.