Chassis reinforcement plate (from CPM Japan)

knightsabers · 10-25-2015, 06:08 PM

I'll let you know when it arrives in the next couple of days

tboooe · 10-25-2015, 09:38 PM

Quote:

Originally Posted by knightsabers

I'll let you know when it arrives in the next couple of days

I am excited to hear your impressions.

knightsabers · 10-29-2015, 09:22 PM

Installing it tomorrow hopefully. It's solidly built with a bit of weight to it. I'll measure the dimensions & weight later.

Here's a copy of the instruction.Created a translated version beneath.

M-terkait · 10-30-2015, 11:47 AM

would it fit with a big 3inch exhaust because the stock plate was causing rattle with my exhaust where they were too close.

tboooe · 10-30-2015, 11:57 AM

Quote:

Originally Posted by M-terkait

would it fit with a big 3inch exhaust because the stock plate was causing rattle with my exhaust where they were too close.

I doubt it because its position is the same as the stock one so if your exhaust was hitting that it would also hit this one too.

knightsabers · 10-31-2015, 12:34 AM

Got it installed first thing this morning. First impression is less body roll entering a corner at speed, surprisingly it took away the rumble from the start stop.

I have a 3" full exhaust and the clearance is fine for mine.

Might try it for a week before giving my thoughts on it.
Name: IMG_2743.jpg
Views: 7617
Size: 148.9 KB

Name: IMG_2743.jpg
Views: 7617
Size: 148.9 KB

Name: IMG_2729.jpg
Views: 6463
Size: 128.4 KB

Name: IMG_2733.jpg
Views: 7492
Size: 186.5 KB

Name: IMG_2740.jpg
Views: 6470
Size: 166.3 KB

OEM Piece

Dog Face Pony Soldier · 10-31-2015, 09:52 AM

I installed the F80 brace on my F30, but have since went further and purchased the brace from the F32. The coupe's brace ties in two additional contact points and is pretty inexpensive.

tboooe · 10-31-2015, 10:42 AM

Quote:

Originally Posted by glennQNYC

I installed the F80 brace on my F30, but have since went further and purchased the brace from the F32. The coupe's brace ties in two additional contact points and is pretty inexpensive.

Did you experience any improvement in handling with the F32 brace? If so, I wonder if adding the CPM brace would further improve things.

NISFAN · 11-04-2015, 04:21 AM

Quote:

Originally Posted by glennQNYC

I installed the F80 brace on my F30, but have since went further and purchased the brace from the F32. The coupe's brace ties in two additional contact points and is pretty inexpensive.

Are those two extra rods to reduce the yaw movement of the subframe during cornering? Are they solidly mounted? Have you noticed any difference?

Daftasabrush · 11-04-2015, 11:55 AM

Quote:

Originally Posted by glennQNYC

I installed the F80 brace on my F30, but have since went further and purchased the brace from the F32. The coupe's brace ties in two additional contact points and is pretty inexpensive.

That's a photo of the underside of my F31 340i I took while it was on the lift at a friend's garage and those are stock bracing parts. My March 2015 F31 330D also had the same bracing.

Dog Face Pony Soldier · 11-04-2015, 01:09 PM

Quote:

Originally Posted by Daftasabrush

Quote:

Originally Posted by glennQNYC

I installed the F80 brace on my F30, but have since went further and purchased the brace from the F32. The coupe's brace ties in two additional contact points and is pretty inexpensive.

That's a photo of the underside of my F31 340i I took while it was on the lift at a friend's garage and those are stock bracing parts. My March 2015 F31 330D also had the same bracing.

Yea, I used your image since I didn't have one in my phone at the time. Since F30s don't have the same type of brace as the F31/F32, I ordered the parts and plan on putting them in a week or two.

Dog Face Pony Soldier · 11-04-2015, 01:10 PM

Some more images of the F31/F32 chassis brace...

tboooe · 11-04-2015, 02:11 PM

glennQNYC did you notice any improvement after you installed the new brace?

Dog Face Pony Soldier · 11-04-2015, 05:57 PM

Quote:

Originally Posted by tboooe

glennQNYC did you notice any improvement after you installed the new brace?

Not on yet... My shop of choice (Lux Motorwerks) has been backed up with SEMA projects. I'll have it on in a week or two.

Daftasabrush · 11-05-2015, 04:33 AM

Looks like the F31 and F32 have different part nos for this:

33316861811 is shared with F31, F34 GT and F36: http://www.realoem.com/bmw/enUS/partxref?q=33316861811
33316797444 is shared with F32, F33 and F36: http://www.realoem.com/bmw/enUS/partxref?q=33316797444

Interestingly, the F31 part appears to weigh a bit more than the F32 part but I doubt there's much difference though if both parts fit the F36

Bee Pee · 11-05-2015, 11:03 AM

I have installed the F80 plate and similar cross brace for F2x series.

I have quaife LSD and JB4 with ~ 400bhp/460lbft and the rear brace positively locates rear subframe to the underbody.

More power and QLSD putting more reactions into the rear subframe bushes meant occasionally worming under hard acceleration. With underbody chassis bracing the rear is now much more stable and any and all of the aforementioned wobbles have gone and the car is now even more composed especially over bumpy roads, typical of what we have here in the UK.

Daftasabrush · 11-05-2015, 04:54 PM

Interesting the F80 plate can be installed with the cross brace. Did you have to use longer bolts?

dotjonnL · 11-05-2015, 09:08 PM

Quote:

Originally Posted by Daftasabrush

Interesting the F80 plate can be installed with the cross brace. Did you have to use longer bolts?

+1 did you have to use longer bolts?

Bee Pee · 11-06-2015, 03:06 AM

Quote:

Originally Posted by Daftasabrush

Interesting the F80 plate can be installed with the cross brace. Did you have to use longer bolts?

Yes - installed longer F8x bolts.

The stock F2x bolts are 3/4" long and the stock F8x bolts are 1" long

963mw · 11-08-2015, 03:44 PM

Can this be done to X-Drive cars as well? Or is this a strictly RWD upgrade?

Edit: Never mind my question, I just checked a picture of my X-Drive's under-body and the panels look the same.

963mw · 11-08-2015, 03:54 PM

Stock 435i X-Drive brace:

Seraphblade@sg · 11-10-2015, 07:06 AM

Quote:

Originally Posted by glennQNYC

I installed the F80 brace on my F30, but have since went further and purchased the brace from the F32. The coupe's brace ties in two additional contact points and is pretty inexpensive.

Hi Glenn, would you be able to post the part numbers for the 2 additional braces?

10-25-2015, 06:08 PM	#23
knightsabers Major 454 Rep 1,374 Posts Drives: Audi R8 v10 Spyder Join Date: Aug 2013 Location: Sydney iTrader: (1) Garage List 2012 Audi R8 v10 Sp ... [0.00] 2013 BMW 328i F30 [9.66]	I'll let you know when it arrives in the next couple of days __________________ Current Setup & Build
	Appreciate 0 Quote

10-30-2015, 11:47 AM	#26
M-terkait Major 209 Rep 1,252 Posts Drives: F30 335i 3/13 Join Date: Mar 2013 Location: Kuwait iTrader: (0)	would it fit with a big 3inch exhaust because the stock plate was causing rattle with my exhaust where they were too close. __________________ Docrace 6266
	Appreciate 0 Quote

10-31-2015, 12:34 AM	#28
knightsabers Major 454 Rep 1,374 Posts Drives: Audi R8 v10 Spyder Join Date: Aug 2013 Location: Sydney iTrader: (1) Garage List 2012 Audi R8 v10 Sp ... [0.00] 2013 BMW 328i F30 [9.66]	Got it installed first thing this morning. First impression is less body roll entering a corner at speed, surprisingly it took away the rumble from the start stop. I have a 3" full exhaust and the clearance is fine for mine. Might try it for a week before giving my thoughts on it. OEM Piece __________________ Current Setup & Build Last edited by knightsabers; 10-31-2015 at 12:40 AM..
	Appreciate 0 Quote

10-31-2015, 09:52 AM	#29
Dog Face Pony Soldier 2006 TIME Person Of The Year 9720 Rep 6,445 Posts Drives: M Sport 335i Join Date: May 2013 Location: North Jersey iTrader: (0) Garage List 2014 335i [9.74]	I installed the F80 brace on my F30, but have since went further and purchased the brace from the F32. The coupe's brace ties in two additional contact points and is pretty inexpensive. Attached Images __________________
	Appreciate 0 Quote

11-04-2015, 01:10 PM	#34
Dog Face Pony Soldier 2006 TIME Person Of The Year 9720 Rep 6,445 Posts Drives: M Sport 335i Join Date: May 2013 Location: North Jersey iTrader: (0) Garage List 2014 335i [9.74]	Some more images of the F31/F32 chassis brace... Attached Images __________________
	Appreciate 0 Quote

11-04-2015, 02:11 PM	#35
tboooe Brigadier General 925 Rep 3,089 Posts Drives: F36 428i GC, E36 M3 - gone :( Join Date: Dec 2014 Location: The OC! iTrader: (1)	glennQNYC did you notice any improvement after you installed the new brace? __________________ My build thread 2015 428i GC - Alpine White - Coral Red - M Sport
	Appreciate 0 Quote

11-05-2015, 04:33 AM	#37
Daftasabrush Fool 1857 Rep 3,542 Posts Drives: F31 340i Join Date: Jul 2014 Location: England iTrader: (0)	Looks like the F31 and F32 have different part nos for this: 33316861811 is shared with F31, F34 GT and F36: http://www.realoem.com/bmw/enUS/partxref?q=33316861811 33316797444 is shared with F32, F33 and F36: http://www.realoem.com/bmw/enUS/partxref?q=33316797444 Interestingly, the F31 part appears to weigh a bit more than the F32 part but I doubt there's much difference though if both parts fit the F36
	Appreciate 0 Quote

11-05-2015, 11:03 AM	#38
Bee Pee Brigadier General 1774 Rep 4,511 Posts Drives: AW M2 DCT Join Date: Jun 2010 Location: SW London iTrader: (3)	I have installed the F80 plate and similar cross brace for F2x series. I have quaife LSD and JB4 with ~ 400bhp/460lbft and the rear brace positively locates rear subframe to the underbody. More power and QLSD putting more reactions into the rear subframe bushes meant occasionally worming under hard acceleration. With underbody chassis bracing the rear is now much more stable and any and all of the aforementioned wobbles have gone and the car is now even more composed especially over bumpy roads, typical of what we have here in the UK. __________________ Fettled M135i EB AT then AW M2 DCT - both gone but not forgotten: Current '22 X3M LCI..
	Appreciate 1 Quote

11-05-2015, 04:54 PM	#39
Daftasabrush Fool 1857 Rep 3,542 Posts Drives: F31 340i Join Date: Jul 2014 Location: England iTrader: (0)	Interesting the F80 plate can be installed with the cross brace. Did you have to use longer bolts?
	Appreciate 0 Quote

11-08-2015, 03:44 PM	#42
963mw BMW Fanatic 331 Rep 1,076 Posts Drives: M2 Join Date: Nov 2014 Location: Mexico iTrader: (0)	Can this be done to X-Drive cars as well? Or is this a strictly RWD upgrade? Edit: Never mind my question, I just checked a picture of my X-Drive's under-body and the panels look the same. __________________ 18 BMW M2 \| ER DP \| ER CP \| Wagner Evo 2 Comp Intercooler \| Aquamist HFS4 \| BM3 \| CSF Oil Cooler \| AFE Drop-in Filter \| Bilstein B16 PSS10
	Appreciate 0 Quote

11-08-2015, 03:54 PM	#43
963mw BMW Fanatic 331 Rep 1,076 Posts Drives: M2 Join Date: Nov 2014 Location: Mexico iTrader: (0)	Stock 435i X-Drive brace: __________________ 18 BMW M2 \| ER DP \| ER CP \| Wagner Evo 2 Comp Intercooler \| Aquamist HFS4 \| BM3 \| CSF Oil Cooler \| AFE Drop-in Filter \| Bilstein B16 PSS10
	Appreciate 0 Quote