911vet

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I have an (irrational or justifiable?) fear of my torsion bars failing. I'm considering replacements.

OE bars for 87 were 19mm front, 25mm rear.

I can't find those sizes in aftermarket bars. And they are getting hard to find from genuine Porsche outlets as well.

I can go to 21mm front, 27mm rear aftermarket bars. But I have been "warned" that doing so will require me to re-valve my shocks. Anyone have an opinion on that? I've got new Bilstein HDs. Is going up to 21/27 really such a dramatic change that I'd have to adjust the shocks?

I was also told 21/27 would be "too harsh" and my worn Cabriolet suspension couldn't handle it... could be too stressful on a Cab body.

Opinions?

Note: I have brand new shocks, turbo tie rods, ball joints, sway bar bushings. The rest of the suspension is OE and 20yrs old as far as I know.
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Larry Herman

21/27 is still pretty soft, and new Bilstein HD shocks should be just fine. Since you are tracking the car, you probably will appreciate the improvement.

For comparison, I ran 23/31 T-bars in my 84 Carrera with Bilstein sport shocks and solid bushings, and the ride was still reasonable, at least for me. It only got rough when I decided to get them revalved.

Cory M

I wouldn't worry too much about your torsion bars failing...