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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 > What jobs to do while subframe is dropped?



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      08-29-2018, 01:16 AM   #1
sparky1
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What jobs to do while subframe is dropped?

Hey everyone, just curious if I'm missing anything.

Dropping my subframe in the next day or so to do the oil pan gasket and a few other things because I shredded a serpentine belt. Just did the water pump and thermostat a week ago, just didn't get around to doing the serpentine belt before it let go :\

Curious if there is anything else I should do while I've got it dropped for easy access to just about everything.

Current plans are:

Front main seal
Oil pan gasket
Valve cover gasket (this is a maybe, going to be looking around for leaks from there while I've got everything torn apart)
Motor mounts (anything wrong with the corteco ones?)
And finally, just to make me feel better about all this, some set of stock location silicone inlets.

I won't be doing downpipes though. Not looking to do that for quite some time. I want to get my intake system situated before I touch that. Intercooler is next after inlets.

Current mods are just a DCI and preventative maintenance.

Thoughts, comments, etc appreciates
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      08-29-2018, 07:50 AM   #2
LaxIan55
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Do yourself a favor and do the downpipes while you are in there. You will kick yourself when you come back to do it later.
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      08-29-2018, 08:30 AM   #3
Boland01
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I think you've got it covered.
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      08-29-2018, 07:16 PM   #4
mweisdorfer
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Quote:
Originally Posted by sparky1 View Post
Hey everyone, just curious if I'm missing anything.

Dropping my subframe in the next day or so to do the oil pan gasket and a few other things because I shredded a serpentine belt. Just did the water pump and thermostat a week ago, just didn't get around to doing the serpentine belt before it let go :\

Curious if there is anything else I should do while I've got it dropped for easy access to just about everything.

Current plans are:

Front main seal
Oil pan gasket
Valve cover gasket (this is a maybe, going to be looking around for leaks from there while I've got everything torn apart)
Motor mounts (anything wrong with the corteco ones?)
And finally, just to make me feel better about all this, some set of stock location silicone inlets.

I won't be doing downpipes though. Not looking to do that for quite some time. I want to get my intake system situated before I touch that. Intercooler is next after inlets.

Current mods are just a DCI and preventative maintenance.

Thoughts, comments, etc appreciates
Unless the FMS is leaking, I wouldn't touch it. They can be very tricky to reseal.

O2 sensors are really easy when the subframe is out if the car.

MMP makes the best/ cost efficient inlets; consider outlets as well.
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      08-29-2018, 07:19 PM   #5
sparky1
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Quote:
Originally Posted by mweisdorfer View Post
Quote:
Originally Posted by sparky1 View Post
Hey everyone, just curious if I'm missing anything.

Dropping my subframe in the next day or so to do the oil pan gasket and a few other things because I shredded a serpentine belt. Just did the water pump and thermostat a week ago, just didn't get around to doing the serpentine belt before it let go :\

Curious if there is anything else I should do while I've got it dropped for easy access to just about everything.

Current plans are:

Front main seal
Oil pan gasket
Valve cover gasket (this is a maybe, going to be looking around for leaks from there while I've got everything torn apart)
Motor mounts (anything wrong with the corteco ones?)
And finally, just to make me feel better about all this, some set of stock location silicone inlets.

I won't be doing downpipes though. Not looking to do that for quite some time. I want to get my intake system situated before I touch that. Intercooler is next after inlets.

Current mods are just a DCI and preventative maintenance.

Thoughts, comments, etc appreciates
Unless the FMS is leaking, I wouldn't touch it. They can be very tricky to reseal.

O2 sensors are really easy when the subframe is out if the car. Catless down pipes ?
No downpipes for now. Inlets will probably be done with downpipes because of the difficulty involved with getting to the rear turbo with the downpipes still on. Too bad

The good news is that my front main seal looks good! There was no protruding belt coming from it, so I think I'm good there. There was a little bit squished between the pulley and the block, but that was about it. It was on the outer perimeter of it
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      08-29-2018, 11:07 PM   #6
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Water pump and thermostat are easier without the subframe.
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      08-29-2018, 11:13 PM   #7
sparky1
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Quote:
Originally Posted by ferocity02 View Post
Water pump and thermostat are easier without the subframe.
I actually just got done replacing those right before this happened, so I'm good there!
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      08-30-2018, 03:13 PM   #8
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Corteco engine mounts are fine, that is what ecs recomments
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