RSR - Shock Tower reinforcements

[POKDUB]

I believe the rear shock towers on the RSR have some reinforcement plates, triangular in shape.

Does anyone have a picture of the triangular piece, or an RSR rear shock tower in the engine compartment ?

[Shaun @ Tru6]

[Jack Olsen]

Here's the way it was done on my car:

[cstreit]

Here's a few pics of the way I did it...

I also re-inforced where the rear cross-member met the frame, it was cracking a bit even BEFORE the coil-overs...

[randywebb]

There is an old thread on this too. I asked Tyson if it was a good idea for a street car and he said not important. Not sure what else is on that thread...

[tom1394racing]

Here's a few pics of the reinforcements on my RSR clone project. I believe these are an accurate replication of the orignal gussets.

[Britain Smith]

Here is how I did it.

[jpahemi]

Auto Associates does really nice work. Shaun 84 comes in a close second.
J.P.

[CarreraCab]

Tom Butler, and TRE have what appears to me as the closet to the original factory gusseting to keep the towers from flexing or walking. Damn, I love that car Tom ! Doug

[Porsche Doc]

Here is how we did the last one.
We plate them up pretty good.

[randywebb]

that looks the strongest of all

sombody should do a finite element model on these puppies...

[jpahemi]

Don's looks bullet proof.
j.p.

[kycarguy 935]

My 79 935 DP car and 74 RSR clone has the same ones as Tom's car.

[Jack Olsen]

Ladies and gentlemen, we have a winner.

[Porsche Doc]

Toms are the closest to the orginals.
If he'd put in the 12ga boxing it would be correct.
Looks great though!

[POKDUB]

Thank you all for the pointers. Amazed by the the overnight response when I came in this morning. Agree with Jack, Don's version with the box metal bar between the towers looks so rigid. My 911 is purely streetcar so the rollcage versions will have to wait until I get hooked on racing these stallions.

Slan.

[randywebb]

Come to think of it....

The rubber mounts for the top of the shocks will allow some movement. So making the towers stronger will not improve the first increment of flex. You'd need a way to tie the top of the shocks in but without transmitting all the vibration to the body. Make sense?

[rdane]

Another version...close to the originals

[Porsche Doc]

A couple of just 12 ga plates like the TRE and the ones like rdane posted just don't get it done!

[Porsche Doc]

Originally posted by randywebb
Come to think of it....

The rubber mounts for the top of the shocks will allow some movement. So making the towers stronger will not improve the first increment of flex. You'd need a way to tie the top of the shocks in but without transmitting all the vibration to the body. Make sense?

But we don't use rubber mounts the shocks are solid mounted on a RSR. We use these mounts.