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-   -   How twitchy will a rear sway bar make a '74 without one currently? (http://forums.pelicanparts.com/porsche-911-technical-forum/854262-how-twitchy-will-rear-sway-bar-make-74-without-one-currently.html)

78-911SC 03-03-2015 02:19 PM

Craig thanks for the offer but already have all the parts. My concern is where to weld the brackets.

Fintstone I kind of thought that would be the way to go about it but I thought maybe someone could confirm it or lead me in another direction. Thanks for your input.

fintstone 03-03-2015 04:28 PM

Quote:

Originally Posted by 78-911SC (Post 8514049)
Craig thanks for the offer but already have all the parts. My concern is where to weld the brackets.

Fintstone I kind of thought that would be the way to go about it but I thought maybe someone could confirm it or lead me in another direction. Thanks for your input.

If I remember right, this clip addresses install in an early car...but, I don't have the bandwidth here to view it...so I am not sure. It used to be quite common though. If we keep bumping this to the top, one of the pros will eventually chime in.

http://youtu.be/QjceX92qPb0?list=PLPDtxlBvsuA-uLh4oC92fTUpTa3I00XTj

78-911SC 03-03-2015 06:51 PM

Fintstone excellent video but I'm not so sure that it applies to the 70T. Peter installed the brackets on a 68 SWB car that had a special indentation on the body that lined up with the brackets. Will try and check that out on my car in the next couple of days and get back with the results. I know the brackets are different than the ones I have. Thanks for the heads up on the video.

chrismorse 03-04-2015 06:05 AM

Replacing my 74 torn rear mounts
 
Here is an old thread dealing with replacing damaged 74 rear bar mounts, along with a fuel pump relocation.

Once cleaned up, we assembled the bar, drop link and brackets and offered it up to the chassis to see where it wanted to mount. This wound up right about where the outlined area on the chassis was. We clamped the bracket to the chasis after hosing everything with weld through primer.
As you can see from the photo, the rear fuel pump mount makes working on the left mount a bit awkward, so we decided to a front relocation fortuitously, this also made for better pictures.

Hope this helps,
chris
http://forums.pelicanparts.com/porsche-911-technical-forum/617072-replacing-rear-bar-mounts-74-911-a.html

Here are a few shots of the processhttp://forums.pelicanparts.com/uploa...1425481005.jpg
http://forums.pelicanparts.com/uploa...1425481030.jpg
http://forums.pelicanparts.com/uploa...1425481064.jpg
http://forums.pelicanparts.com/uploa...1425481106.jpg
http://forums.pelicanparts.com/uploa...1425481132.jpg
http://forums.pelicanparts.com/uploa...1425481183.jpg

spuggy 03-04-2015 06:18 AM

Quote:

Originally Posted by tdskip (Post 8513068)
Let me double check what I have on the front.

Way back when I had an '86 944, I ran mis-matched front/rear sways. For about 50 miles.

PO had replaced the front sway with a smaller one, and removed the rear entirely. (sways smaller/rear optional on earlier cars - figured they probably swapped sways with a buddy before selling the car).

Sourced some late turbo sways (bigger again), fitted the rear first - but ran out of light working on the car. So big rear sway, small front when driving home.

This combination induced oversteer. To the point where you'd be using opposite lock/throttle steer driving round on/off ramps at legal/responsible speeds... Whilst it was entirely controllable & predictable - not to mention kind of fun :D - fitted the matching front sway PDQ.

Whole car felt stiffer/cornered flatter afterwards. The rear much more so.

78-911SC 03-04-2015 06:27 AM

Chris exactly what I was trying to figure out. Fintstone and I both thought that was the way to go about it but were not sure.Thanks for the pics and input.

Spuggy like you said my car had the capability for the fronts but none for the back. Hence the problem.

tdskip 03-04-2015 09:57 AM

Great conversation guys, thanks for the input and hope it helped some other people as well.

Charles Freeborn 03-04-2015 11:30 AM

PSA
If you have a '74, and you move your fuel pump to the front of the car, you WILL need to replace the tunnel fuel line to one that can take the full pressure of your fuel pump. In '74 they used vinyl tubing which WILL NOT handle the pressure, and should be replaced (regardless of the pump location).
We now return to your regular scheduled programming....

tdskip 03-04-2015 12:19 PM

Quote:

Originally Posted by Charles Freeborn (Post 8515501)
PSA
If you have a '74, and you move your fuel pump to the front of the car, you WILL need to replace the tunnel fuel line to one that can take the full pressure of your fuel pump. In '74 they used vinyl tubing which WILL NOT handle the pressure, and should be replaced (regardless of the pump location).
We now return to your regular scheduled programming....

Great info (and reminder). Thanks!

chrismorse 03-04-2015 04:02 PM

Quote:

Originally Posted by Charles Freeborn (Post 8515501)
PSA
If you have a '74, and you move your fuel pump to the front of the car, you WILL need to replace the tunnel fuel line to one that can take the full pressure of your fuel pump. In '74 they used vinyl tubing which WILL NOT handle the pressure, and should be replaced (regardless of the pump location).
We now return to your regular scheduled programming....



Hi Charles,

I was thinking the same thing too, so we ran a 5/16 id stainless line inside the old vinyl line because I was worried about not only the pressure but getting tangled up in the clutch and or throttle cables in the tunnel.

It is covered in the thread I referenced and the parts were available through Napa.

regards,
chris


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