BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
 





 

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      06-19-2014, 09:55 AM   #23
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Pic of the front braces (taken from front of car).
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      06-19-2014, 10:01 AM   #24
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Looks like I need to toss my car on the lift and do some poking around.
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      06-19-2014, 12:50 PM   #25
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Quote:
Originally Posted by TheSt|G View Post
Looks like I need to toss my car on the lift and do some poking around.
The rear braces mount identically, they "slide in" one mounting point and bolt in quite simply to the other mounting point.

With the way OEs share parts to the greatest extent possible, i'd wager the 82 retains those mounting points even though it lacks the braces of the 'vert.

Investigate!
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      06-19-2014, 01:20 PM   #26
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Quote:
Originally Posted by 135Pats
Quote:
Originally Posted by TheSt|G View Post
Looks like I need to toss my car on the lift and do some poking around.
The rear braces mount identically, they "slide in" one mounting point and bolt in quite simply to the other mounting point.

With the way OEs share parts to the greatest extent possible, i'd wager the 82 retains those mounting points even though it lacks the braces of the 'vert.

Investigate!
This is what Andrey GTA was hoping for. He first noticed the bars running along the inside of my engine bay and then I told him that the verts also have the rear bracing along the bottom. Even with all this bracing, there is still a lot of body twisting and creaking associated with the vert haha.
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      06-20-2014, 11:30 AM   #27
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Quote:
Originally Posted by pj.rodriguez View Post
This is what Andrey GTA was hoping for. He first noticed the bars running along the inside of my engine bay and then I told him that the verts also have the rear bracing along the bottom. Even with all this bracing, there is still a lot of body twisting and creaking associated with the vert haha.
Reminds me of a thread when I first started posting here where I was told repeatedly that just because every other convertible made had half the torsional rigidity of the coupe counterpart, the 1 series was an exception.

I actually got in contact with the BMW engineering department in Germany via BMWNA(probably because I was asking such an obscure question) in the end.
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      06-20-2014, 11:35 AM   #28
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Any thoughts on any of the "fleebay" offerings listed below. They seem to conform to the solid, no hinge concept required for an effective solution.

http://www.ebay.com/itm/06-08-BMW-E9...7bd51e&vxp=mtr

http://www.ebay.com/itm/ULTRA-RACING...eb8d1d&vxp=mtr

http://www.ebay.com/itm/Strong-Front...938b79&vxp=mtr
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      06-20-2014, 12:01 PM   #29
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Quote:
Originally Posted by atterbud View Post
Any thoughts on any of the "fleebay" offerings listed below. They seem to conform to the solid, no hinge concept required for an effective solution.

http://www.ebay.com/itm/06-08-BMW-E9...7bd51e&vxp=mtr

http://www.ebay.com/itm/ULTRA-RACING...eb8d1d&vxp=mtr

http://www.ebay.com/itm/Strong-Front...938b79&vxp=mtr
The first and last one put all of the lateral stress on 2 bolts on each side. I'm not an engineer, but I don't think that's the most effective way of limiting movement.
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      06-20-2014, 12:09 PM   #30
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Yeah, none of those are anything I would use.
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      06-20-2014, 04:44 PM   #31
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Quote:
Originally Posted by TheSt|G View Post
The plot thickens. Does the E82 have mounting provisions for it?
Yes, I wouldnt mention this if it wasnt feasible. The engine bay one is bolt in with only one bolt as unkown ( the one to join the V at the bottom of the front sub frame ). It may require the Large underside front V brace mount from the photos above. Also the engine bay V brace is not found on the e93 M3, but is on all the other converts and e89 Z4( same part number)

The rear V brace of the car may not be feasible, because end of it near the deferential requires a rather tall/long mount piece to connect the brace to the car body. So that may be hard to retrofit...

It would be very interested if it e93 m3 version of this in the rear works, it looks more elegant int he e90post thread.
http://www.e90post.com/forums/showthread.php?t=878426

Part 7 - http://www.e90post.com/forums/showpo...0&postcount=89

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Last edited by andrey_gta; 06-20-2014 at 04:55 PM..
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      06-30-2014, 06:56 PM   #32
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2008 BMW 128i  [10.00]
The e88 and e93 have a slightly different front subframe - in the center it has a small metal box welded on to which the front V attaches and the underside diagonal braces attach to
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128i Sport 6MT converted to Euro 130i spec, 3.73 diff, tuned by evolve ~220 whp 207 wtq(ft-lb) SAE
In-progress: //M front arm, M3 rack, e36M lip Wishlist: Coils, n55 mnts, headers, LSD, e60 finn diff


"The 1-series is the last car that BMW engineered before the Germans, as a car-making culture, fell out of love with driving." - R&T 2013 135is
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      06-30-2014, 07:24 PM   #33
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Smile

Quote:
Originally Posted by 135ivert View Post
So you hit a patch of bad pavement and get (for lack of a better term) aftershocks in the cowl and squeaks in the dash and A-pillar? Right now that's my biggest problem with the E88 and would hope to dial out with the strut tower bar. While the Mason engineering bar looks SERIOUS, I don't think it would provide that much advantage over the AA on a street-driven car.
Why is street driven important? You say the problem is over bumps.

Personally, I like the Mason. $400 for something that seems substantially stronger than the $315 AA. My convert does not squeak (only 30K miles?), but I'm looking for every last smidge of steering response I can get. I'm not looking for chassis flex to help the ride.
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      08-13-2014, 07:55 PM   #34
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Time to add more to this
Real oem showed me that e92 have an extra braces:
51617183043
51617183044


These braces look like 1/4 of the convertible e93 /e88 /z4 braces( Specific to engine clearance lower into the engibe. So check first)
51617265285
51617258314


Since the convertible braces need a sub frame swap or a small custom mount, these are the next best thing. They attach from fender/strut area to the Crumple arms, they may need a bolt: 07119905147 and nut for the lower end 07119904670
The Driver side/Left may need a bolt in the bottom instead of a nut, my e82 doest have it...



EDIT:
Appears there is a bracket for the sub frame available for the early e93 that allows mounting of the V brace !!!!!
51617135640


One has to use 2007 spec V rod braces - engine specific, pls check
51617135647
51617135648

V long body
51617135653
51617135654


Bolts ( not sure of quantities, pronb 2 each
07149140997
07119906199
07119905502

Lock plate - not sure of use ?
33326760364


LCI e93 /135i e88 front subfraame what it lookslike:
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128i Sport 6MT converted to Euro 130i spec, 3.73 diff, tuned by evolve ~220 whp 207 wtq(ft-lb) SAE
In-progress: //M front arm, M3 rack, e36M lip Wishlist: Coils, n55 mnts, headers, LSD, e60 finn diff


"The 1-series is the last car that BMW engineered before the Germans, as a car-making culture, fell out of love with driving." - R&T 2013 135is

Last edited by andrey_gta; 08-13-2014 at 11:22 PM..
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      08-15-2014, 09:55 AM   #35
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Quote:
Originally Posted by 135Pats View Post
Whoa. Now that is a serious strut brace.



The E88 is strictly street driven so I wonder if that's overkill. I'm trying to strike a fairly impossible balance here - a reasonably quiet and non shuddering convertible that is stiff and responsive up front.

Those are largely contrasting goals I realize but we can dream right?

If it's between the Mason and AA, go with the Mason. You can't have too much structural rigidity
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      08-15-2014, 11:50 AM   #36
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Quote:
Originally Posted by Chrisar82 View Post
If it's between the Mason and AA, go with the Mason. You can't have too much structural rigidity
I held off on this....my current focus is on adding more tire to the equation...car just can't put it down right now effectively.

I'm shooting for 245/275 but we'll have to see.
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      09-08-2014, 02:16 PM   #37
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Quote:
Originally Posted by TheSt|G View Post
Yeah, the E90 era in general got a pretty big boost in structural rigidity(though the E60 was weirdly less than the E39).

I seriously miss my E36 M3 and E36 M3s in general. Easily the most important car I've owned.


Is that one yours?
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      09-08-2014, 03:59 PM   #38
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Originally Posted by Chrisar82 View Post
Is that one yours?
Nope, just a spectacular photo of one.
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      09-08-2014, 05:29 PM   #39
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Originally Posted by TheSt|G View Post
Nope, just a spectacular photo of one.
Oh, it is a nice picture. That's some intense driving
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      06-02-2015, 11:19 PM   #40
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Hey Pats, sorry for the thread revive. Im wondering if you made a decision on a strut brace.

I finally pulled the trigger on a real suspension and I want to be able to access the adjustments. Looking for some input from another vert owner.

Thanks man!
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      06-03-2015, 02:51 AM   #41
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+1 on the Mason Engineering bar

I'm currently using the 1m bar so I can access my adjustments but planning on getting the Mason Engineering one to replace it soon.
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      06-03-2015, 11:26 AM   #42
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+1 on the mason as well. noticeable difference with less creaking and a more solid feel over the front tires. also observed by passenger. next is the hotchkis arb.
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      06-03-2015, 01:32 PM   #43
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The Mason bar looks really nice, but its also gone up in price by $100 since it came out. Still worth it for $450? or $600 with the v braces?
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      06-03-2015, 02:04 PM   #44
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Quote:
Originally Posted by BrokenVert View Post
The Mason bar looks really nice, but its also gone up in price by $100 since it came out. Still worth it for $450? or $600 with the v braces?
I just ordered the steel one with the V braces.. I'll let you know at the end of the month after my next autox
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