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-   -   Tunnel reinforcement on late 73 2.4T (http://forums.pelicanparts.com/porsche-911-technical-forum/1083091-tunnel-reinforcement-late-73-2-4t.html)

kaputtrepariert 01-11-2021 11:20 PM

Tunnel reinforcement on late 73 2.4T
 
Hello,

I have a very late ROW 2.4T which is currently being restored. I just now noticed that it has the reinforcement plate which connects the top of the tunnel to the torsion tube as used on later models.
It looks factory to me, could it be that this was an improvement done very late in the production run?

http://forums.pelicanparts.com/uploa...1610439338.JPG
http://forums.pelicanparts.com/uploa...1610439338.JPG
http://forums.pelicanparts.com/uploa...1610439338.JPG
http://forums.pelicanparts.com/uploa...1610439569.jpg

Thanks for any info

70SATMan 01-12-2021 04:38 PM

Yes, and it was first introduced on the RS chassis if memory serves.

kaputtrepariert 01-13-2021 01:56 AM

Thanks and yes they started adding this reinforcement with the RS model. Couldn't find anything regarding other longhood models receiving these as well though, but I guess late ones received these. The car in the pics is around one of the last 50 coupes.

Flojo 01-13-2021 02:05 AM

Quote:

Originally Posted by 70SATMan (Post 11179559)
Yes, and it was first introduced on the RS chassis if memory serves.

I know it from the ST (71), so earlier than the RS (73)

RWebb 01-13-2021 03:17 PM

kaputtrepariert, do you know your build date?

Rodney Nelson 01-13-2021 05:09 PM

What does it look like from the underside where it attaches to the torsion tube? Or does it?

kaputtrepariert 01-13-2021 09:38 PM

Quote:

Originally Posted by RWebb (Post 11180880)
kaputtrepariert, do you know your build date?

I don't have a birth certificate for it yet, but the first day of registration was July 13 1973.

Quote:

Originally Posted by Rodney Nelson (Post 11181050)
What does it look like from the underside where it attaches to the torsion tube? Or does it?

As the car is at the painter at the moment I only have these pictures.

http://forums.pelicanparts.com/uploa...1610605646.jpg
http://forums.pelicanparts.com/uploa...1610605646.jpg

70SATMan 01-14-2021 10:21 AM

Quote:

Originally Posted by Flojo (Post 11179910)
I know it from the ST (71), so earlier than the RS (73)

I was focusing on the production cars. Werks had the liberty of doing pretty much anything they wanted on the factory cars.

Could you point me to evidence of the reinforcement on the 71 ST because I don't ever recall seeing that. The 70/71STs were based on the S Liteweight chassis so, should have then ended up on those very rare production cars.

72 STs were a bit more "production like" and was in parallel with RS development so, I could accept that as well.

RWebb 01-14-2021 12:14 PM

re: "late"

I call the cars built after the August holiday 'late' so this would be earlier than that.

Interested to hear the sleuthing results, and what P KG was trying to overcome with this.

group911@aol.co 01-14-2021 12:29 PM

Usually indicates something special.
What's your VIN? I've only seen it on 73 RS, prototypes and the early 74 US Carrera cars.

kaputtrepariert 01-14-2021 12:44 PM

Thanks for all the information so far.
Vin is 91135018xx (out of 1875, hence the late)
I don‘t really have any history of the car. Only thing i know is that the car had carrera flares, a rubber front spoiler and a 300kmh g body tach entered in it’s german papers, so probably a g body retrofit. I am not sure why they would go all the way to retrofit this reinforcement, but this would be the easiest explanation for this (and it doesn‘t look retrofit to me but I am no expert).
When I bought it, it was already (rather badly) returned to it‘s longhood shape

group911@aol.co 01-14-2021 12:49 PM

How about a picture of the flares and maybe they were welded on.
The reinforcement retrofit would be a challenge.

kaputtrepariert 01-14-2021 01:10 PM

Quote:

Originally Posted by group911@aol.co (Post 11182408)
How about a picture of the flares and maybe they were welded on.
The reinforcement retrofit would be a challenge.

I only have a picture of the rather badly welded on ones as I got it like this.
http://forums.pelicanparts.com/uploa...1610662121.jpg

kaputtrepariert 02-11-2021 11:43 AM

Got the car back and took a closer look. The tunnel has the seat belt mounts in the tunnel as well, so seems like a 74 tunnel to me.
http://forums.pelicanparts.com/uploa...1613075946.jpghttp://forums.pelicanparts.com/uploa...1613076060.jpg

group911@aol.co 02-11-2021 12:43 PM

It doesn't have the 74 up seat belt mounts that I can see.
I still think you should have Dave do a cardex for you to see what it was

kaputtrepariert 02-11-2021 12:47 PM

Quote:

Originally Posted by group911@aol.co (Post 11220867)
It doesn't have the 74 up seat belt mounts that I can see.
I still think you should have Dave do a cardex for you to see what it was

Thanks, thought these were the mounts only present 74 and up.
Do you have a way by which I can contact Dave?

group911@aol.co 02-11-2021 01:03 PM

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kaputtrepariert 02-11-2021 09:54 PM

Thank you Bob. I sent him a message. I will update once I get new info.


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