I'm more than surprised that I'm not seeing that here. More elegant designs provide hex flats on this tube so you don't have to use vise grips. Loosen the jam nuts and rotate the center portion with all those vise grip marks to grow or shrink it the desired amount, then re-tighten the jam nuts.
A steel turnbuckle (green) serves as the steering tie rod. In true 911 fashion the steering rack sits behind the front axle centerline - probably for packaging reasons. Because it is threaded, ride height adjustments are easily made by twirling this bolt. The torsion bar's end is capped with a fitting that contains an adjustment screw, and the point at which this screw makes contact with the inner face of the block is the point where this end of the torsion spring is prevented from rotating. This block defines the pivot point and cradles the rear bushing for the lower control arm, but it's also the stopper for the torsion bar. That happens here, inside an aluminum block (yellow) that is bolted to the unibody. Here the torsion bar rotates in lock-step with the lower control arm as the wheel moves up and down.īut our concealed torsion bar can only become a spring if its opposite end is held fast so it cannot rotate. The invisible t-bar is mated to the visible outer tube via a hidden splined joint at the forward end (yellow). This type of torsion bar arrangement is called a parallel bar layout because the bars run parallel to the direction of travel. Ah, but a torsion bar is hidden inside the lower arm's main tube along that thin white line. No spring down here, either.not that we can see, anyway. Thing is, the familiar coil-over spring seems to be AWOL. We're used to seeing struts defining the upper suspension mount and steering pivot in modern Porsche 911s, and we're seeing the same thing here.
*49 years if you hark back to its debut in 1963. Things finally started to change when the 964-based 911 came out in 1990. This classic 911 suspension only lasted four additional model years after our car was built. Those tires are about to come off so we can see what a *26-year-old Porsche 911 suspension looks like up close. Our 1985 Porsche 911 really does look all awkward and dangly when perched on our Rotary 2-post lift.
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