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Front undertray Question
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Glemon  



Joined: 05 Jan 2016
Posts: 203
Location: Lincoln, NE

PostPosted: Sun Mar 28, 2021 8:42 am    Post subject: Front undertray Question Reply with quote

So all the louvers on the undertray open to the back but one. My first thought was it just got bent, but it is such a tidy bend it almost looks like it should be that way. Front left in picture. Know it is probably not a huge deal,but thought I would ask.



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Fifty50Plus  



Joined: 28 Feb 2008
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Location: Washington DC area

PostPosted: Sun Mar 28, 2021 9:24 am    Post subject: Reply with quote

No, they all are one way, evacuating to the rear.
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Rasta Monsta  



Joined: 12 Jul 2006
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PostPosted: Sun Mar 28, 2021 10:42 am    Post subject: Reply with quote

That is a TSB procedure intended to extend the life of the hot side motor mount. A dealer likely did that back in the day.
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anthonimartini  



Joined: 17 Feb 2020
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Location: portland oregon

PostPosted: Sun Mar 28, 2021 2:29 pm    Post subject: Reply with quote

thats why i like the 931 hood so much, after a long drive at speed the motor mount is actually cold to the touch! i also made a effective heat shield out of a 70's oregon license plate.
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Harm  



Joined: 02 Apr 2009
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Location: Holland

PostPosted: Sun Mar 28, 2021 6:53 pm    Post subject: Re: Front undertray Question Reply with quote

Glemon wrote:
So all the louvers on the undertray open to the back but one. My first thought was it just got bent, but it is such a tidy bend it almost looks like it should be that way. Front left in picture.


Same here.
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pierro  



Joined: 15 Nov 2016
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PostPosted: Sun Mar 28, 2021 10:42 pm    Post subject: Reply with quote

My 924 NA has that too
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Fasteddie313  



Joined: 29 Sep 2013
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PostPosted: Mon Mar 29, 2021 1:48 am    Post subject: Reply with quote

Rasta Monsta wrote:
That is a TSB procedure intended to extend the life of the hot side motor mount. A dealer likely did that back in the day.


Can’t tell if full of shit or serious..
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Glemon  



Joined: 05 Jan 2016
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Location: Lincoln, NE

PostPosted: Mon Mar 29, 2021 12:55 pm    Post subject: Reply with quote

FastFreddie, you beat me to it--i think some may be pulling our collective legs.
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Rasta Monsta  



Joined: 12 Jul 2006
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PostPosted: Mon Mar 29, 2021 3:25 pm    Post subject: Reply with quote

Fasteddie313 wrote:
Can’t tell if full of shit or serious..


A speciality of mine.

This time, serious.
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scm924s  



Joined: 22 Oct 2010
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Location: Gloucester UK

PostPosted: Tue Mar 30, 2021 5:01 am    Post subject: Re: Front undertray Question Reply with quote

[quote="Glemon"]So all the louvers on the undertray open to the back but one. My first thought was it just got bent, but it is such a tidy bend it almost looks like it should be that way. Front left in picture. Know it is probably not a huge deal,but thought I would ask.

They are all like that
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Glemon  



Joined: 05 Jan 2016
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PostPosted: Tue Mar 30, 2021 6:27 am    Post subject: Reply with quote

Glad I posted before taking the hammer to my "well patinaed" aluminum undertray.
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Fifty50Plus  



Joined: 28 Feb 2008
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Location: Washington DC area

PostPosted: Tue Mar 30, 2021 7:18 am    Post subject: Reply with quote

Aluminum???
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Rasta Monsta  



Joined: 12 Jul 2006
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PostPosted: Tue Mar 30, 2021 10:11 am    Post subject: Reply with quote

Yes, 924s
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Fifty50Plus  



Joined: 28 Feb 2008
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PostPosted: Thu Apr 01, 2021 2:20 am    Post subject: Reply with quote

Ah, my '79 is steel.
I put it back on the race car and it lowered my temps a bit but didn't make 20 extra HP or knock two seconds off my lap times. Maybe the aluminum one will.
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1979 924 NA race car
1982 924 NA race car - Sold
1982 924 Turbo almost a PoS
1981 924 Turbo a real PoS, new engine
1982 924 Turbo nice body, blown engine
1972 911 E race car - going to Vintage
Various 944s to become IT-S race car
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Rasta Monsta  



Joined: 12 Jul 2006
Posts: 11553
Location: PacNW

PostPosted: Thu Apr 01, 2021 3:40 am    Post subject: Reply with quote

It should lower your Cd.
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