Fitting the OEM Carbon rear diffuser ('07 coupe)

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Re: Fitting the OEM Carbon rear diffuser ('07 coupe)

Post by Breaker » Mon Mar 30, 2009 11:05 pm

Did you check out page 2 of this thread? :wink:

viewtopic.php?f=12&t=9619&start=15
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Re: Fitting the OEM Carbon rear diffuser ('07 coupe)

Post by coupe-sport » Tue Mar 31, 2009 7:57 am

Doh ! - very nice.
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Re: Fitting the OEM Carbon rear diffuser ('07 coupe)

Post by Breaker » Sat Apr 11, 2009 9:06 pm

Update. Just sealed up the edges of the diffuser to make it look smoother. Although it was a good fit, there was a small gap on the corners, and being fussy, that just wouldn't do! :P

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Re: Fitting the OEM Carbon rear diffuser ('07 coupe)

Post by cj10jeeper » Sat Apr 11, 2009 10:48 pm

Looks really good :thumbsup:

Strange - that's the one job I still have to do on mine and I keepo thinking about what I'm going to do with it. Even worse in that mine does not have the crease line to follow and a different lower 'lip' profile, so even morereason to fill it.

So what did you seal it with? My first thought is to use an automotive black silicone.
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Re: Fitting the OEM Carbon rear diffuser ('07 coupe)

Post by ksher » Sun Apr 12, 2009 12:11 am

Breaker wrote: Image
How do you keep the exhaust pipes that shiny? I use Autosol Metal Polish, but still can't get the black deposit off.
Current BMW: Z4 sDrive23i ///M Sport (Space Grey/Black Kansas Leather with Black High-gloss Front Grille), 318i Sport (F30).
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Re: Fitting the OEM Carbon rear diffuser ('07 coupe)

Post by Breaker » Sun Apr 12, 2009 11:32 am

They don't look like that all the time! Just did it before the photo! :P I used T-Cut!. :)
3.0si Z4 Coupe then an sDrive 35i Z4. Great cars, now gone. Range Rover Evoque owner now! :)

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Re: Fitting the OEM Carbon rear diffuser ('07 coupe)

Post by Breaker » Sun Apr 12, 2009 11:43 am

cj10jeeper wrote:Looks really good :thumbsup:

Strange - that's the one job I still have to do on mine and I keepo thinking about what I'm going to do with it. Even worse in that mine does not have the crease line to follow and a different lower 'lip' profile, so even morereason to fill it.

So what did you seal it with? My first thought is to use an automotive black silicone.
I think automotive sealant would be fine.

I used black SikaFlex I got from work. It's what the company I work for uses to bond panels on trucks together with (I used to be a vehicle body builder!).

Info here: http://www.sikaindustry.com/tds-ipd-sf221-ind-us.pdf

Put it this way, it will be a bugger to get off now! I could have used it to fit the diffuser without bolting!! :wink:

Mind you, I only sealed the ends though.
3.0si Z4 Coupe then an sDrive 35i Z4. Great cars, now gone. Range Rover Evoque owner now! :)

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Re: Fitting the OEM Carbon rear diffuser ('07 coupe)

Post by Caddyshk » Sun Apr 12, 2009 2:06 pm

Does the car have more downforce now? :driving:
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Re: Fitting the OEM Carbon rear diffuser ('07 coupe)

Post by Shipkiller » Sun Apr 12, 2009 2:14 pm

Yes, :withstupid:

Can you feel it...
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Re: Fitting the OEM Carbon rear diffuser ('07 coupe)

Post by ksher » Sun Apr 12, 2009 8:55 pm

Caddyshk wrote:Does the car have more downforce now? :driving:
Not the double-decker rear diffuser used by Brawn GP, Williams and Toyota. But Breaker's car can still go faster than Coupe without diffuser. :)
Current BMW: Z4 sDrive23i ///M Sport (Space Grey/Black Kansas Leather with Black High-gloss Front Grille), 318i Sport (F30).
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Re: Fitting the OEM Carbon rear diffuser ('07 coupe)

Post by Breaker » Sun Apr 12, 2009 9:31 pm

Caddyshk wrote:Does the car have more downforce now? :driving:
If there is, it probably isn't noticeable. :wink:

Looks good though! :thumbsup:
3.0si Z4 Coupe then an sDrive 35i Z4. Great cars, now gone. Range Rover Evoque owner now! :)

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Re: Fitting the OEM Carbon rear diffuser ('07 coupe)

Post by VENDAR » Mon Nov 26, 2012 9:42 am

:thumbsup: Your project makes me wanna go to the dark side of the force :evil:
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Re: Fitting the OEM Carbon rear diffuser ('07 coupe)

Post by ba3bas » Thu Jun 05, 2014 12:24 pm

whats the part number for the diffuser?
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Re: Fitting the OEM Carbon rear diffuser ('07 coupe)

Post by cj10jeeper » Thu Jun 05, 2014 1:52 pm

ba3bas wrote:whats the part number for the diffuser?
Discontinued by BMW many years ago. No longer any old stock available.
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