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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Oil Pan + Other Maintenance



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      03-22-2023, 03:28 PM   #1
335xiE90
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Oil Pan + Other Maintenance

I plan on doing my oil pan gasket. While I'm in there with the subframe dropped I plan on doing the rod bearings, motor mounts and WP/thermo. How's my cart look? Am I missing anything that might be easy to do while I'm in there?

https://www.ecstuning.com/Cart/?add1...tent=link2cart
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      03-22-2023, 04:00 PM   #2
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Originally Posted by 335xiE90 View Post
I plan on doing my oil pan gasket. While I'm in there with the subframe dropped I plan on doing the rod bearings, motor mounts and WP/thermo. How's my cart look? Am I missing anything that might be easy to do while I'm in there?

https://www.ecstuning.com/Cart/?add1...tent=link2cart
That list looks perfect to me--wouldn't change a thing.
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      03-22-2023, 05:25 PM   #3
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Quote:
Originally Posted by 335xiE90 View Post
I plan on doing my oil pan gasket. While I'm in there with the subframe dropped I plan on doing the rod bearings, motor mounts and WP/thermo. How's my cart look? Am I missing anything that might be easy to do while I'm in there?

https://www.ecstuning.com/Cart/?add1...tent=link2cart
O-ring for the oil pump pick up tube.
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      03-24-2023, 08:43 AM   #4
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Quote:
Originally Posted by 335xiE90 View Post
I plan on doing my oil pan gasket. While I'm in there with the subframe dropped I plan on doing the rod bearings, motor mounts and WP/thermo. How's my cart look? Am I missing anything that might be easy to do while I'm in there?

https://www.ecstuning.com/Cart/?add1...tent=link2cart
If you are thinking about upgrading turbos....that would be a good time to do it also. Or if you want to mess with aftermarket inlets even.
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      03-24-2023, 05:13 PM   #5
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Lemforder mounts?

Just might suggest going with Lemforder mounts, I think they are the ones that actually make the "BMW" ones. Would save a bunch of $$$

Maybe new trans mounts also?
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      03-25-2023, 08:04 AM   #6
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Originally Posted by iqraceworks View Post
If you are thinking about upgrading turbos....that would be a good time to do it also. Or if you want to mess with aftermarket inlets even.
That’s the next phase. I’m planning on going single next March. 👍👍
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      03-25-2023, 08:11 AM   #7
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Originally Posted by BRG_N54 View Post
Just might suggest going with Lemforder mounts, I think they are the ones that actually make the "BMW" ones. Would save a bunch of $$$

Maybe new trans mounts also?
Much appreciated my friend. I switched the mounts for the lemforder brand. I didn’t think about the transmission mount. I’ll check into it!
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      03-27-2023, 07:38 AM   #8
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Is it an Xdrive?? There are lots of things that can be serviced while doing the oil pan. Hows all the front end parts?
Get a new braided ground strap ( from left engine mount to frame)

Personally I would get everything from FCP Euro...not a fan of ECS.
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      03-27-2023, 08:13 AM   #9
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Is it an Xdrive?? There are lots of things that can be serviced while doing the oil pan. Hows all the front end parts?
Get a new braided ground strap ( from left engine mount to frame)

Personally I would get everything from FCP Euro...not a fan of ECS.
Yep It's an x drive. I feel the exact opposite, I loathe FCP.
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      03-27-2023, 08:25 AM   #10
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You'll need the o-rings for the axles, replace the axle seals on the front diff, new axle nuts, diff fluid, the single aluminum bolt for the pan thats not included in the bag of bolts.
Also should do the transfer case fluid, and might as well do transmission fluid and filter

Also why waste $270 on BMW motor mounts when there are lots of mounts for half the price?
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      03-27-2023, 10:20 AM   #11
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Originally Posted by jadams161 View Post
You'll need the o-rings for the axles, replace the axle seals on the front diff, new axle nuts, diff fluid, the single aluminum bolt for the pan thats not included in the bag of bolts.
Also should do the transfer case fluid, and might as well do transmission fluid and filter

Also why waste $270 on BMW motor mounts when there are lots of mounts for half the price?
Damn the list just keeps getting longer. I'll research those tonite and get the cart updated. As for the motor mounts I updated my cart to the lemforder brand per BRG_N54's suggestion. I also added the belt/pulleys/tensior as well. One thing to note is I'm coming up against my budget for this round so 1500 is my max. lol Current cart: https://www.ecstuning.com/Cart/?add1...tent=link2cart
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      03-27-2023, 10:56 AM   #12
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Not sure what year car you have but the seals made by Coteco are all cheap. Worst thing is the quart of oil for transfer case.. but if you are in there just do it all. It won't be $1500
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      03-27-2023, 11:46 AM   #13
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Yeah, Xdrive owner here. Don't get Corteco Differential Seals/Orings.

Your list is missing those Differential Seals (you have orings, good). A 2 inch PCV pipe and a block of wood will push those seals in flush with the diff.

Axle nuts, control arm/tierod single use self locking nuts.

Sway bar bushings would be nice to have too. Throw in anything cheap so you get the most out of your alignment.

I'd also recommend getting some tools for the axles to make quick work of removing and installing the axles. It can be difficult to pull in the axle and smacking the knuckle with a hammer can transfer bad forces to the differential.

Also, you may have problems reusing some bolts depending on corrosion (i.e. subframe bolts/steering rack bolts). Hopefully it isn't too bad. 6x Reinforcement plate bolts are torque to yield, up to you to replace. I don't think anyone other than me has replaced these.
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      03-27-2023, 01:01 PM   #14
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Quote:
Originally Posted by Suvorovo View Post
Yeah, Xdrive owner here. Don't get Corteco Differential Seals/Orings.

Your list is missing those Differential Seals (you have orings, good). A 2 inch PCV pipe and a block of wood will push those seals in flush with the diff.

Axle nuts, control arm/tierod single use self locking nuts.

Sway bar bushings would be nice to have too. Throw in anything cheap so you get the most out of your alignment.

I'd also recommend getting some tools for the axles to make quick work of removing and installing the axles. It can be difficult to pull in the axle and smacking the knuckle with a hammer can transfer bad forces to the differential.

Also, you may have problems reusing some bolts depending on corrosion (i.e. subframe bolts/steering rack bolts). Hopefully it isn't too bad. 6x Reinforcement plate bolts are torque to yield, up to you to replace. I don't think anyone other than me has replaced these.
Corteco is OEM as far as seals go...Or go BMW I've had zero issues with Corteco products. The reinforcement plate bolts are steel...not aluminum..BMW recommends replacing steel bolts too for some reason..all while using cheap plastic parts in high heat/stress areas..but yes you are probably the only person to replace them..lol
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      03-27-2023, 02:09 PM   #15
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Quote:
Originally Posted by jadams161 View Post
Corteco is OEM as far as seals go...Or go BMW I've had zero issues with Corteco products. The reinforcement plate bolts are steel...not aluminum..BMW recommends replacing steel bolts too for some reason..all while using cheap plastic parts in high heat/stress areas..but yes you are probably the only person to replace them..lol
At $2 a piece, saving hundreds on DIY, it didn't seem like a big deal.
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