F80 rear subframe onto E92

imported_mega · 07-28-2020, 08:45 AM

anyone know if the M F8X subframe is compatible with e82/E9X ?

Looking at rear subframe upgrades for my E82 track car, E9X M will bolt right in, not sure if F8X will also bolt in. I realize the LSD is servo activated and that would have to be swapped with a regular clutch, but the arm improvements may be worth it. F8X complete dropouts are quite a bit cheaper than E9X complete subframes

If not I plan on swapping in a E9X M rear subframe

SYT_Shadow · 07-28-2020, 09:19 AM

I don't know, however, working on both cars, their rear subframes seem pretty similar. There isn't a generational shift in the rear suspension and subframe between both gens

tdott · 07-28-2020, 10:16 AM

The mounting points don't look close to being the same.

nickauger · 07-29-2020, 08:14 PM

new subframe look like race car tubular subframe. i'm jealous !

Raptorworks · 08-08-2021, 05:23 PM

How'd you go with this.

I am about to start a similar thing since m3 rear assemblies are unobtanium in Australia and I want my m4 brakes installed.

OmairK · 03-05-2024, 09:59 PM

Bumping a 3 year old thread…

I think the rear aluminum wheel carriers might fit.

Track/S · Yesterday, 07:30 AM

Quote:

Originally Posted by OmairK

Bumping a 3 year old thread…

I think the rear aluminum wheel carriers might fit.

Min 2:20

M3SQRD · Yesterday, 10:46 AM

Quote:

Originally Posted by Track/S

Min 2:20

Translate?

Only thing I noticed was his hand gesture that looked like he was cutting off the one mounting location…I know that’s not close to what he was saying

Track/S · Yesterday, 11:34 AM

Quote:

Originally Posted by M3SQRD

Translate?

Only thing I noticed was his hand gesture that looked like he was cutting off the one mounting location…I know that’s not close to what he was saying

I found the video by chance, yesterday I was measuring the subframe on an e90 to see if I could install f82 subframe on an e92 m3 and the only measurement that was not the same is this:
820mm on m3 e92 vs 860mm on F8X

In the video it says that it is necessary to cut the 4 attachment points of the subframe because none of them fit, it seems strange to me...

But the best thing about the video are this:

M3SQRD · Yesterday, 11:45 AM

Quote:

Originally Posted by Track/S

I found the video by chance, yesterday I was measuring the subframe on an e90 to see if I could install f82 subframe on an e92 m3 and the only measurement that was not the same is this:
820mm on m3 e92 vs 860mm on F8X

In the video it says that it is necessary to cut the 4 attachment points of the subframe because none of them fit, it seems strange to me…

But the best thing about the video are this:

Damn, so close yet so far!

Ah, so he was making hand gestures to cut the two mounting points off!

I did notice the flip flops

OmairK · Yesterday, 05:37 PM

Considering no other videos were uploaded since this pioneer started this endeavor, I fear the flip flops might’ve broken!

Track/S · Today, 12:46 AM

Quote:

Originally Posted by OmairK

Considering no other videos were uploaded since this pioneer started this endeavor, I fear the flip flops might’ve broken!

07-28-2020, 08:45 AM	#1
imported_mega Colonel 123 Rep 2,200 Posts Drives: various bmw's Join Date: Jul 2007 Location: neverland iTrader: (0)	F80 rear subframe onto E92 anyone know if the M F8X subframe is compatible with e82/E9X ? Looking at rear subframe upgrades for my E82 track car, E9X M will bolt right in, not sure if F8X will also bolt in. I realize the LSD is servo activated and that would have to be swapped with a regular clutch, but the arm improvements may be worth it. F8X complete dropouts are quite a bit cheaper than E9X complete subframes If not I plan on swapping in a E9X M rear subframe __________________ You only need two tools in life - WD-40 and Duct Tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape. Driving e82, e72, e85, R53 Gone but not forgotten.. 1974 2002, many various 3s.
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07-28-2020, 09:19 AM	#2
SYT_Shadow ///M Powered for Life 11499 Rep 10,332 Posts Drives: E90M/E92M/M4GTS/M4GT4/X5M Join Date: Sep 2010 Location: Greenwich, CT iTrader: (2)	I don't know, however, working on both cars, their rear subframes seem pretty similar. There isn't a generational shift in the rear suspension and subframe between both gens __________________ DIY: S65 Rod Bearings E9X PFC Z54 BBK on F8X BK harness bar + seats: fit 6 tires in an M3 do88 Cooling Goodies GTS Twins: GTMore project
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07-28-2020, 10:16 AM	#3
tdott Brigadier General 3955 Rep 3,993 Posts Drives: M3 Join Date: Nov 2010 Location: South FL / 6ix iTrader: (4)	The mounting points don't look close to being the same. __________________ N/A S65 Headers Before/After Dyno Results
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07-29-2020, 08:14 PM	#4
nickauger Private 36 Rep 82 Posts Drives: m3 e90 Join Date: Aug 2018 Location: Quebec iTrader: (1)	new subframe look like race car tubular subframe. i'm jealous !
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08-08-2021, 05:23 PM	#5
Raptorworks New Member 2 Rep 9 Posts Drives: bmw e92 Join Date: Aug 2021 Location: Australia, Queensland iTrader: (0)	How'd you go with this. I am about to start a similar thing since m3 rear assemblies are unobtanium in Australia and I want my m4 brakes installed.
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03-05-2024, 09:59 PM	#6
OmairK Engineer 51 Rep 174 Posts Drives: 1995 M3 - 2011 E90 M3 6M ZCP Join Date: Apr 2019 Location: NY iTrader: (0)	Bumping a 3 year old thread… I think the rear aluminum wheel carriers might fit.
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Yesterday, 05:37 PM	#11
OmairK Engineer 51 Rep 174 Posts Drives: 1995 M3 - 2011 E90 M3 6M ZCP Join Date: Apr 2019 Location: NY iTrader: (0)	Considering no other videos were uploaded since this pioneer started this endeavor, I fear the flip flops might’ve broken!
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