Rear Shock Tower Braces?

[Geneman]

Hello Gentleman,
This is a setup I have rarely seen here on the forums. But it looks mucho cool and functional: Rear shock buttresses and a cross tower brace in the rear. likely will reduce rear flex big time

In planning my engine out , winter circus event, seems like something worthwhile doing .
Have never seesn this setup for sale anyone know where to get it for a 88 C NA?

Thanks as always, very grateful Frank

[Dueller]

Looks custom fab and likely as a result of coilover conversion. I don't think there is much flex in that area that would cause handling issues in torision bar suspension cars. What caught my eye are the holes in alternator fan....not like that on mine.

[KTL]

For a torsion bar car (torsion bars still in use) the rear shock reinforcements are not critical. The torsion bar housing carries the majority of the loading when the torsion bars are present. However, when you convert to coilovers the spring load is transferred to the shock tower and there needs to be some additional support there. Honestly, even with that gusseting shown, it's not enough when coilovers are used.

You need some support on the longitudinals/frame rails where the shock tower connects. The reasoning is that when the coilovers are installed, the load placed there tries to pivot/hinge on the chassis frame rails. So you attach some rear "legs" from the frame rails to the hoop of the safety cage. For a street car, probably not a big deal if the rear legs aren't there. But a car that is raced or regularly tracked, the rear legs are important to limit chassis flex.

TRE Motorsports makes a simpler gusset kit. RSR Rear Shock Tower Reinforcement

[mrm930]

That is the Singer "white" car that an acquaintance of mine had built. Very cool BTW.

It is custom built and can be replicated fairly easy. I am doing it on my 930. I am replacing the torsion bars with coil overs and will reinforce the shock towers. So while in there, I will have a strut bar installed.

Mark

[TRE Cup]

That "strut bar" does absolutely nothing in the Singer's case, except look cool. The bridge is so strong that Porsche only installed triangular braces on the shock towers, then added corner plating in the engine compartment. This was on the RSR , the ST, the 935.

When installing shock tower braces for coil overs , on your car, don't forget to reinforce the cross bridge to engine compartment longitudinals. Heavy track , or street ;-) , use will separate the bridge from the sides

Btw- we sell the replica, non drilled, shock tower weld in kits. 4 pieces, requires grinding/filing to fit

[RWebb]

on the ST, but not the RS?


and... what about the S/T and S-T