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Old 04-02-2013, 03:30 PM   #1
TerraPhantm
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Replacing Front Subframe -- What else should I do at the same time?

Due to a jack slipping incident, I ended up bending my front subframe where the steering rack mounts. Is there anything you guys recommend on replacing while I'm in there? The car has ~108k miles for whatever it's worth.

I already changed my engine mounts like 3k miles ago. I will also most likely change my control arms and bushings at the same time. And I will throw in a ZHP steering rack (with new tie rods) as well.

Is there anything else worth replacing?
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Old 04-02-2013, 03:36 PM   #2
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That's unfortunate man. And dafuq did you just call it??? ZHP rack?! dead to me!

Ooh I really can't think of anything. Maybe while you have the front subframe down, do the oil pan gasket. How are you supporting the engine?
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Old 04-02-2013, 03:40 PM   #3
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Well in this case the rack actually came from a ZHP - but yes, I should've said "330" rack

Oil pan gasket is a good idea. Do you know who makes the OE gasket? I only see Victor Reinz on Pelican.. but I'm very hesitant to buy anything Victor Reinz due to past experience on other cars

I'll be supporting the engine with an engine support bar.

Last edited by TerraPhantm; 04-02-2013 at 03:45 PM.
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Old 04-02-2013, 03:46 PM   #4
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Let's just call it "the 712 rack" from now on.

And IIRC BMW doesn't sell an oil pan gasket. I think they just recommend some form of liquid sealant. I could be wrong.
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Old 04-02-2013, 03:47 PM   #5
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Originally Posted by TerraPhantm View Post
Well in this case the rack actually came from a ZHP - but yes, I should've said "330" rack

Oil pan gasket is a good idea. I'll be supporting the engine with an engine support bar
Yeah yeah

Cool. Careful not to scratch anything. I'd duct-tape any surfaces the support bar touches the car like the fender areas including the engine hook. Mine got scratched

Will you be using new subframe bolts? IIRC, TIS says reinstalling them is fine but to reinstall them dry. 128 ft-lbs. you may know this already but just throwing stuff out there. Maybe reinforcement kit for front subframe? I think there's little plates that go on the corners or something.

you getting new tierods for the new rack? or will the ///M ones fit?
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Old 04-02-2013, 03:47 PM   #6
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Let's just call it "the 712 rack" from now on.

And IIRC BMW doesn't sell an oil pan gasket. I think they just recommend some form of liquid sealant. I could be wrong.
i think you're referring to the diff.

http://www.ecstuning.com/BMW-E46-M3-S54_3.2l/ES11818/

agreed on 712 rack.
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Old 04-02-2013, 03:53 PM   #7
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Please for the love of god get new subframe bolts. Maybe someone in this thread remembers my fiasco with one of those bolts costing me $500
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Old 04-02-2013, 03:53 PM   #8
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Quote:
Originally Posted by TerraPhantm View Post
Well in this case the rack actually came from a ZHP - but yes, I should've said "330" rack

Oil pan gasket is a good idea. Do you know who makes the OE gasket? I only see Victor Reinz on Pelican.. but I'm very hesitant to buy anything Victor Reinz due to past experience on other cars

I'll be supporting the engine with an engine support bar.
I ended up with an extra oil pan gasket. Meistersatz brand. I changed mine with the same brand and am happy with it. Make offer if you want it.
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Old 04-02-2013, 04:08 PM   #9
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Oil pan gasket is a good idea.
If you drop the pan for a gasket change then maybe add the oil pump nut with locktite.
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Old 04-02-2013, 04:12 PM   #10
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If you drop the pan for a gasket change then maybe add the oil pump nut with locktite.
He has an S54. They don't have harmonic issues.
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Old 04-02-2013, 04:16 PM   #11
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If you drop the pan for a gasket change then maybe add the oil pump nut with locktite.


Quote:
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He has an S54. They don't have harmonic issues.
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Old 04-02-2013, 04:23 PM   #12
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Maybe while youre under the car, do some pull ups on the sway bar.
lol, what about tranny mounts?
a thought...
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Old 04-02-2013, 04:39 PM   #13
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What are you like the forum bully?
No I just help people. That can't happen when there's false info out there. Chillax.
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Old 04-02-2013, 04:52 PM   #14
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Old 04-05-2013, 08:47 PM   #15
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Well. Control arms didn't arrive so this project is delayed for another week. My driver side arm definitely has play too.



Quote:
Originally Posted by Mango View Post
Yeah yeah

Cool. Careful not to scratch anything. I'd duct-tape any surfaces the support bar touches the car like the fender areas including the engine hook. Mine got scratched

Will you be using new subframe bolts? IIRC, TIS says reinstalling them is fine but to reinstall them dry. 128 ft-lbs. you may know this already but just throwing stuff out there. Maybe reinforcement kit for front subframe? I think there's little plates that go on the corners or something.

you getting new tierods for the new rack? or will the ///M ones fit?
Good call on the duct tape. I was worried about damage to those areas

I got new subframe bolts. Not worth risking the bolt fracturing over a few bucks.

I know the entire tie rod can be swapped over. What I'm not 100% sure about is whether the M3 outer tie rod can be attached to the non-M inner and keep the geometry correct.


Quote:
Originally Posted by peytonracer4 View Post
Please for the love of god get new subframe bolts. Maybe someone in this thread remembers my fiasco with one of those bolts costing me $500
Definitely. Your thread is precisely why I'm not risking those bolts


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I ended up with an extra oil pan gasket. Meistersatz brand. I changed mine with the same brand and am happy with it. Make offer if you want it.
I thought about it and... I'm really hesitant to mess with something that has never been disturbed. I will probably do the rod bearings this summer and will change the oil pan gasket then.

Last edited by TerraPhantm; 04-05-2013 at 08:47 PM.
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