Upgraded oil pans

Christian87n

Lurker
Feb 19, 2018
19
So my 335is DCT bottom and side gaskets are leaking. Since I want to deal with this once, I want to upgrade the gaskets with Viton gaskets and the pan to a metal one in the hopes that this will help. I can’t seem to find much info in the forums but I know SSP, Gintani, Mojo, and Slon make billet aluminum pans. I know that SSP also makes Viton seals.

Does anyone have any experience, installed pictures, or other recommendations? I also want to know which pans prevent the bottom cover from being reinstalled. I would like to retain mine if possible. Thanks!
 
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aus335iguy

Lieutenant
Nov 18, 2017
884
There is a cast aluminium pan made by someone somewhere that was around half the price of the billet one.

It was in the DCT Facebook group but I’ve since left so can’t get to it.
 
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Christian87n

Lurker
Feb 19, 2018
19
THANKS! I’ll post that question in the DCT group I’m in and I’ll post answers here. I know I can’t be the only one that wants to fix leaks haha.
 
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doublespaces

Administrator
Oct 18, 2016
7,153
AZ

n54dct

Lurker
Sep 7, 2018
12
Finland
Hello, I am too currently in the need of replacing the oil pan gasket and did a comparison of the available oil pans. Here are the results:

oil pans.jpg


This one? I wish there were provisions for an external cooler, I'd be sold. Doesn't look like there is even any space for that.
https://www.agency-power.com/shop/agency-power-aluminum-bmw-dct-transmission-cooling-pan-bmw-models-11-18/?v=7516fd43adaa

The SSP oil pan has bungs for external oil cooler as shown in this videot at 2:41
 
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n54dct

Lurker
Sep 7, 2018
12
Finland
Can the SSP seal be used with other pans?
It would seem so, I think it is identical in shape and size to the original gasket, only the material is different. But it should be noted that some aftermarket oil pans use sealant instead of a gasket.

The viton dct oil pan gasket can be also found cheaper for 99$ on ebay. I think SSP is still the only manufacturer for the viton mechatronic cover gasket.

Also it would seem that the O-ring for the wiring harness can be a source of leak, so it could be wise to replace it too if the transmission is taken out.
 

aus335iguy

Lieutenant
Nov 18, 2017
884
Any aluminium pan can have bungs welded or tapped in. A sump pump and a thermal switch and relay, some lines and a cooler... job done. The tranny already has oil lines though, why not just tap a cooler into those ? Much easier than getting a pump and wiring etc. if it’s good enough for M3s then I personally wouldn’t complicate it more than that.
 

aus335iguy

Lieutenant
Nov 18, 2017
884
Also of all the pans, as far as I remember the slonik one was the only one with a revised pickup to take advantage of the extra volume. The others may have revised their offering since I saw them
 

doublespaces

Administrator
Oct 18, 2016
7,153
AZ
Yes if needed, but I wouldn't tap the pan for cooling. There's an auxiliary cooler IIRC, I would upgrade that one first.
The dct uses the same heat exchanger cooler as the auto I beleive. I've already replaced this with a small core on the driver fender but it is insufficient. I'm upgrading that core to a slightly larger one that still allows brake ducts to remain, but it is unclear if it would be able to handle the load on its own in AZ. If not I was looking at my options in terms of adding a second circuit so your pan interested me. Would bms be able to add those provisions for a small fee or would I need to do this myself?
 

aus335iguy

Lieutenant
Nov 18, 2017
884
I’m not seeing issues with mine on even the hottest days here. Admittedly not up to the temps in Arizona but still well over 100f some days with no sign of trouble. I’m also not stressing the thing nearly as much as you would be as i dont have a single.
 

doublespaces

Administrator
Oct 18, 2016
7,153
AZ
What cooler do you have? Divorcing the trans cooling from the coolant circuit takes quite a bit of surface area to do so at a stand still and no fans.
 
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