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The Showroom
This is the place to show off your BMW to other members of the community. Post pictures and videos of your car and the modifications you have done to it. If you need a picture of something on a coupe, sedan, convertible or touring you will probably find it here!

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Old 06-06-2013, 06:13 PM   #1
MrAdam
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1/4 Panel Replacement 135i

Sup Fanatics,
At my shop we recently replaced the 1/4 panel on a 2009 BMW 135i. If you saw my "Bumper Job" thread, you may wanna check this out.


Customer was shopping around for the best shop to repair his car (smart man, not shopping for estimates, but shopping shops)

Customer brought us this,






So lets see whats going on under there...


Step 1 strip it down...
Before we start chopping off the damaged 1/4 panel we have to set the car up on our CARBENCH Jigs... (In order to mount the car to Jigs we must loosen/drop/suspend/remove suspension, exhaust, fuel tank as well as misc. under covers etc...)








The Jigs get the car back to factory specs and tolerances up to 2mm (Per BMW)






Once we have it bolted up to the Frame Machine we can remove the glass and begin the sectioning of the 1/4 panel.





Here is our new 1/4 panel (Caged animal )





These are the adhesive kits that get used for bonding the 1/4 panel to the car. Keep in mind, BMW recommends weld bonding their replacement panels rather than the conventional "weld it back together method"

The reason BMW recommends this, not only the corrosion protection it provides, but also this keeps the factory crumple zones and the car will act the same way in future accidents *knock on wood*

I know what you're thinking... GLUE????? but this is structural panel bonding adhesive that has holding properties equal to or greater than welding. By no means is this a cheaper / easier fix. If anything it's more expensive requiring special materials and more time for this procedure...


So here's what we got...

Metal Filler/Puddy
- This is in place of your traditional BONDO :thumbdown
- THIS IS NOT A REGULAR BODY FILLER, this is a metal filler that bonds to the panel producing a stronger bond and a longer lasting bond



Back Glass Adhesive
- Since the windshield and back glass are structural components in our cars, BMW recommends the use of their glass adhesive to maintain factory structural properties.



Glass kit also comes with Primer
- the glass adhesive must be applied to the correct type of primer or else the adhesive could fail or come out with the cheap primer altogether.




1/4 section Back Plates
-these go behind the section areas to create not only a perfect alignment, but also during bonding it becomes another structural component in the 1/4 panel.




Bodywork Adhesive
- this is the expensive stuff that becomes your bonding agent

There is a process involving these glues to get them to bond





Structural Foam
- reduces sound & vibration and also acts as a structural component once dried




Cavity Wax
- This is the same stuff that you see dripping between all your door jambs from the facory.
- once primed and sprayed over by the cavity wax, it creates a corrosion protection barrier.



Unfortunately my tech Toretto pre-fit the 1/4 panel and cut it before I had chance to take my photos. so the test fit photo you'll have to use your imagination.

Black E-Coated 1/4 panel being cut at the factory recommended cut locations... :thumsup:

Once in place with the glue we need to let it sit for 18-24 hours to dry, at the same time my tech is spot welding the flanges to create the "Weld Bond"
once dry and in place we can apply the metal puddy and shape the bonded area to prep it for paint.






Once it's all smooth and pretty, we get it prepped for paint

This is not the booth we paint in, we just left it in the bumper booth over night to prevent moisture




Once the paint is dry we get all the seats back in and the glass and shoot it over to detail where we color sand and buff the painted panels

... and here we spot Turbomike's widebody 335i getting ready & detailed for the track after we just painted the bumper... lol





I appologize that I may have skipped a lot of steps, but I'm doing an F12 now and I plan on taking more photos...

Here's the final product... like it never happened







Come by and check us out if you are in the Los Angeles are and need some work done.

http://www.yelp.com/biz/collision-co...nt-los-angeles

Feel free to contact me directly if you yourself are in a situation and need some body work in So*Cal
Or just swing by and check out the shop if you are in the are and talk cars with us nerds in the office. As a shop we plan on doing more and more Auto X events and future clinics.

We are located @

2627 La Cienega Ave
Los Angeles, CA 90034



~Adam

Shop: 310.280.6000

Cell: 310.977.6411
Call/Text

adam@collisionbodyshop.com

www.collisionbodyshop.com

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NEED BODY SHOP ADVICE?
135i REPAIR THREAD
911 REPAIR THREAD

Last edited by MrAdam; 06-06-2013 at 06:13 PM.
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Old 06-06-2013, 06:50 PM   #2
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1/4 Panel Replacement 135i

Wow I can't believe has much work is put into a proper repair. Now I understand why damage to a quarter panel could total a car. Looks great on this car!
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Old 06-06-2013, 07:39 PM   #3
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thats really incredible!!

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Old 06-06-2013, 07:48 PM   #4
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Quality job!

Oh and that e30
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Old 06-06-2013, 09:08 PM   #5
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Wow, nice work!!!
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Old 06-06-2013, 09:15 PM   #6
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Old 06-06-2013, 09:22 PM   #7
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Looks great. I'm assuming you blended the door, right? Looks like the door was masked off in thr pic of the car in the booth. Great job, the quality looks awesome.
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Old 06-06-2013, 09:54 PM   #8
hi its me alec
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Sweet, looks like a good shop to work for too
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Old 06-06-2013, 10:22 PM   #9
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Re: 1/4 Panel Replacement 135i

Quality over anything, I love the attention to all the details. Great job, to bad your on the other coast.
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Old 06-06-2013, 11:48 PM   #10
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propper
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Old 06-07-2013, 01:13 AM   #11
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awesome quality work!
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Old 06-07-2013, 02:15 AM   #12
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****ing awesome work dude!

Can't wait to be out there with you
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Old 06-07-2013, 12:57 PM   #13
MrAdam
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Quote:
Originally Posted by Marshmallow View Post
Wow I can't believe has much work is put into a proper repair. Now I understand why damage to a quarter panel could total a car. Looks great on this car!
Quote:
Originally Posted by rcsummers View Post
thats really incredible!!

Quote:
Originally Posted by e46JAB View Post
Quality job!

Oh and that e30
Quote:
Originally Posted by patdeezy View Post
awesome quality work!
Quote:
Originally Posted by Fergo_the_mule View Post
Wow, nice work!!!
Quote:
Originally Posted by ICONIKE46 View Post
Quote:
Originally Posted by djnekkon View Post
propper
Thanks guys! I appreciate the kind words.
As for the E30... I miss my baby...
Quote:
Originally Posted by jclip View Post
Looks great. I'm assuming you blended the door, right? Looks like the door was masked off in thr pic of the car in the booth. Great job, the quality looks awesome.
The door and trunk were actually removed and still in the other booth where they were blended. you are correct.
Thank you!

Quote:
Originally Posted by hi its me alec View Post
Sweet, looks like a good shop to work for too
it has it's perks...
Quote:
Originally Posted by blazedxjan View Post
Quality over anything, I love the attention to all the details. Great job, to bad your on the other coast.
Thank you! Sorry I'm too far, but if you ever are in a situation and need advise feel free to hit me up. Shops can be shady...

Quote:
Originally Posted by So Lowww View Post
****ing awesome work dude!

Can't wait to be out there with you
Thanks!! I can't wait! hope you don't flake...
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Old 09-02-2015, 04:55 PM   #14
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Of course I find out about your shop right after my car comes out of a body shop

Secretly wishing someone hits me again so I can bring it to you
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Old 09-04-2015, 07:06 PM   #15
MrAdam
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Of course I find out about your shop right after my car comes out of a body shop

Secretly wishing someone hits me again so I can bring it to you
DAAAAAMN! Everyone finds our yelp or my thread after they go thru the nightmare of dealing with a shady shop.


Let me know if you need anything boss
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Old 09-07-2015, 08:52 PM   #16
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nice thread bump.
didn't know about your shop before. will remember it now i'm sub'd
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Old 09-09-2015, 01:07 PM   #17
MrAdam
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Originally Posted by Alex323Ci View Post
nice thread bump.
didn't know about your shop before. will remember it now i'm sub'd
Thanks Man! We Be Out Here!
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