Dropping subframe

cracky · Sun, Oct-10-2010, 08:25:50 PM

I was putting off doing this until next yr....but I may have opportunity(re: time) to do this now and I am thinking about it. Ive had a clunk that hasnt gone away with the replacement of a few things ...im thinking its diff related.

Any special tools (or home made) I need to replace the subframe bushings?

I have these parts

E36/E46/Z4 Rear Camber Arm Bushings - 2x
E36/E46/Z4 Rear Control Arm Upper Inner Bushing 2x
E36 Delrin/Aluminum Differential Mounts (3-piece set)
E36/E46/Z4 Upper/Lower Rear Trailing Arm Ball Joint - 2x
E36 M3 Front Subframe Bushings/Mounts
E36 M3 Rear Subframe Bushings/Mounts
Rtab limiters

Plus I have Mikes diff bolt reinforcement coming.
I also have a small leak(more like sweat) out of one of the diff seals, so Im gonna replace(both likely).
Im also question putting in that solid/alum diff bushing.

I have a bentley and was just curious if there is anything I am missing/should do(yes thats a loaded question because it can lead to redoing the entire car

)
Might leave the rtabs until spring and then weld in the reinforcement plates to.

Anything I should do to the subframe itself? (besides fixing any cracks...which I hope dont exist)
I already plan to clean it up and repaint it with wurth rust paint. (my car has seen winter and will see this winter)

And yes I could search but this place is sorta slow so Ill make a new thread

OahuMPower · Sun, Oct-10-2010, 08:59:09 PM

why would u not do all the weld in reinforcements if everything is being dropped?

my overhaul thread link is in my signature

cracky · Sun, Oct-10-2010, 09:10:41 PM

ya I just found it.

as for not doing all the weld in's....well I just havent ordered them all yet

thats all really. maybe I will do it anyways.

ugh snowball effect

Roland H · Sun, Oct-10-2010, 09:14:26 PM

Quote:

Originally Posted by cracky

ugh snowball effect

Welcome to M3 ownership.

**PurduinaM3** · Sun, Oct-10-2010, 09:15:28 PM

Quote:

Originally Posted by Roland H

Welcome to M3 ownership.

Troof.

cracky · Sun, Oct-10-2010, 09:18:01 PM

I know. I dont have a problem dropping things more than once...

I guess the 3 main reinforcements are:
Box in the diff mounts(diy ..no kit)
sway bar reinforcement(akg)
rtab pocket(bimmerworld)

anything else?

shaeff · Sun, Oct-10-2010, 09:55:22 PM

I did some extra reinforcement while I had my subframe dropped early this year, you can see here pics of what I did to help brace up my subframe here: http://www.m3forum.net/m3forum/showthread.php?t=315690

cracky · Sun, Oct-10-2010, 11:05:24 PM

i saw that. it was like you got drunk and had a welder in your hand

lol i kid i kid.

definitely something for me to think about if i actually rip this thing down.

shaeff · Sun, Oct-10-2010, 11:45:20 PM

LOL, it was something like that! But hey, my subframe shouldn't ever tear apart again! For what it's worth, I plan on going turbo in the future, whenever I finish my Supra, so those reinforcements were kindof looking out for the future.

cracky · Mon, Oct-11-2010, 02:31:00 AM

Ya, definitely a good idea. Ill see the shape of mine when i get it down.

Sun, Oct-10-2010, 08:25:50 PM	#1
cracky Next level beats Join Date: Mar 2010 Posts: 1,964 Reputation: 0	Dropping subframe I was putting off doing this until next yr....but I may have opportunity(re: time) to do this now and I am thinking about it. Ive had a clunk that hasnt gone away with the replacement of a few things ...im thinking its diff related. Any special tools (or home made) I need to replace the subframe bushings? I have these parts E36/E46/Z4 Rear Camber Arm Bushings - 2x E36/E46/Z4 Rear Control Arm Upper Inner Bushing 2x E36 Delrin/Aluminum Differential Mounts (3-piece set) E36/E46/Z4 Upper/Lower Rear Trailing Arm Ball Joint - 2x E36 M3 Front Subframe Bushings/Mounts E36 M3 Rear Subframe Bushings/Mounts Rtab limiters Plus I have Mikes diff bolt reinforcement coming. I also have a small leak(more like sweat) out of one of the diff seals, so Im gonna replace(both likely). Im also question putting in that solid/alum diff bushing. I have a bentley and was just curious if there is anything I am missing/should do(yes thats a loaded question because it can lead to redoing the entire car ) Might leave the rtabs until spring and then weld in the reinforcement plates to. Anything I should do to the subframe itself? (besides fixing any cracks...which I hope dont exist) I already plan to clean it up and repaint it with wurth rust paint. (my car has seen winter and will see this winter) And yes I could search but this place is sorta slow so Ill make a new thread __________________ drive a live axle high power car in rain, your e30 will feel like jesus.- DontRevMe Last edited by cracky; Sun, Oct-10-2010 at 08:32:13 PM.

Sun, Oct-10-2010, 08:59:09 PM	#2
OahuMPower :FACEPALM: Join Date: May 2006 Posts: 26,505 Reputation: 0 Location: San Diego	why would u not do all the weld in reinforcements if everything is being dropped? my overhaul thread link is in my signature __________________

Sun, Oct-10-2010, 09:10:41 PM	#3
cracky Next level beats Join Date: Mar 2010 Posts: 1,964 Reputation: 0	ya I just found it. as for not doing all the weld in's....well I just havent ordered them all yet thats all really. maybe I will do it anyways. ugh snowball effect __________________ drive a live axle high power car in rain, your e30 will feel like jesus.- DontRevMe

Sun, Oct-10-2010, 09:18:01 PM	#6
cracky Next level beats Join Date: Mar 2010 Posts: 1,964 Reputation: 0	I know. I dont have a problem dropping things more than once... I guess the 3 main reinforcements are: Box in the diff mounts(diy ..no kit) sway bar reinforcement(akg) rtab pocket(bimmerworld) anything else? __________________ drive a live axle high power car in rain, your e30 will feel like jesus.- DontRevMe

Sun, Oct-10-2010, 11:05:24 PM	#8
cracky Next level beats Join Date: Mar 2010 Posts: 1,964 Reputation: 0	i saw that. it was like you got drunk and had a welder in your hand lol i kid i kid. definitely something for me to think about if i actually rip this thing down. __________________ drive a live axle high power car in rain, your e30 will feel like jesus.- DontRevMe

Sun, Oct-10-2010, 09:55:22 PM	#7
shaeff Maintenance FTW Join Date: Nov 2008 Posts: 840 Reputation: 0 Location: Tivoli	I did some extra reinforcement while I had my subframe dropped early this year, you can see here pics of what I did to help brace up my subframe here: http://www.m3forum.net/m3forum/showthread.php?t=315690

Sun, Oct-10-2010, 11:45:20 PM	#9
shaeff Maintenance FTW Join Date: Nov 2008 Posts: 840 Reputation: 0 Location: Tivoli	LOL, it was something like that! But hey, my subframe shouldn't ever tear apart again! For what it's worth, I plan on going turbo in the future, whenever I finish my Supra, so those reinforcements were kindof looking out for the future. __________________ Shaeff's rear subframe overhaul ∞ Shaeff's front subframe overhaul

Mon, Oct-11-2010, 02:31:00 AM	#10
cracky Next level beats Join Date: Mar 2010 Posts: 1,964 Reputation: 0	Ya, definitely a good idea. Ill see the shape of mine when i get it down. __________________ drive a live axle high power car in rain, your e30 will feel like jesus.- DontRevMe

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