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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 01-27-2013, 09:39 PM   #1
Duro1215
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E46 glass roof.

would this window be to large for a e46 roof? im thinking about cuting out the window and welding it in.

http://www.andysautosport.com/chrysl...o00900930.html
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Old 01-27-2013, 09:43 PM   #2
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Well... That is for a Chrysler 300. So the curvature of the glass will be so far off. So no. It won't work. You'll need a custom panel. I'm not really sure how you're gonna weld glass to the car either.
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Old 01-27-2013, 09:50 PM   #3
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it comes as part of the roof i will cut the metal around the glass then weld it into the metal on my roof. i was just wondering if it was too long
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Old 01-27-2013, 09:56 PM   #4
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It doesn't matter if its too long. The curvature is different!!
The 300 has a flat roof. The e46 has a more rounded roof. You will not be able to put that glass on a bmw roof. You will need a custom panel specifically made for your bmw roof. It needs to have the exact same degree of curvature.
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Old 01-27-2013, 09:59 PM   #5
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why? im sure there would be a way to make it work. i cant find anything for the e46.
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Old 01-27-2013, 10:01 PM   #6
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and actually both roofs have a slight curve. im sure if you cut 1 -2 inches around the glass you will have enough room to weld the metal in.
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Old 01-27-2013, 10:01 PM   #7
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For the price of doing this correctly you could probably look into forced induction..

350+ HP > glass roof
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Old 01-27-2013, 10:08 PM   #8
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Just no.

Want a glass roof? Buy an X5.
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Old 01-27-2013, 10:12 PM   #9
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If you go through with this you have to keep us updated.
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Old 01-27-2013, 10:17 PM   #10
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and actually both roofs have a slight curve. im sure if you cut 1 -2 inches around the glass you will have enough room to weld the metal in.
The curves have the be exactly the same. You can't just weld a piece of flat metal to a curved metal piece. I drew this to help you understand. The upper drawing is the top view. The dotted line is the glass. The line with slashes is the potential welds.
The bottom drawing is the side view. The darker line with the slashes is the "new" Chrysler 300 roof. As you can see it lays well under the original roof and may even protrude into the cabin. It DOES NOT line up with the existing roof and roof line making it 100% Impossible to weld it in because the existing roof and new roof do not lie on the same plane.
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Old 01-27-2013, 10:20 PM   #11
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Old 01-27-2013, 10:22 PM   #12
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Old 01-27-2013, 10:24 PM   #13
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And no, the 300 roof is way flatter than the e46. What are you judging by, that picture in the ad? Google image a Chrysler 300. It's not even close to the curvature of the e46. Let alone to the exact degree, which is what it needs to be to work.
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Old 01-27-2013, 10:25 PM   #14
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do this.

http://www.slidingragtops.com/
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Old 01-27-2013, 10:36 PM   #15
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i do like the last idea then id be able to open it. im going to look into the rag top
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Old 01-27-2013, 10:42 PM   #16
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i like the idea of glass more tho. i wish there was something allready made that would fit the e46 sedan. im probably going to have to get a custom piece of glass made.
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Old 01-27-2013, 10:45 PM   #17
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This is merely a question as I don't understand 100%. Is it not possible to bend the metal into shape to match the curvature of the e46 roof without affecting the glass housed inside it? I would think that would be possible. It is metal after all.
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Old 01-27-2013, 10:48 PM   #18
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that probably would work.
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Old 01-27-2013, 10:50 PM   #19
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Yeah. I'm not saying it would look perfect. But if you left just enough metal around the edges to bend half of the metal down to match the curvature of the e46 roof, leaving the other half flat to keep the glass from breaking, I would imagine you could make it look "decent".

I can't imagine that being an easy task to accomplish though.
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Old 01-27-2013, 10:58 PM   #20
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I think this would look really good. If you're going tk do it than do it right & having a custom piece of glass or plexi glass made.

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