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Posted by: Jerry75914 Jul 27 2010, 11:29 PM

Hi all,

I'm trying to put together my rear suspension. I have Bilstein HDs and Weltmeister 140lb springs. I removed the hat and related parts from my old assembly, and now I find that the threaded bushing is just too tight for the Bilstein.

Anyone run into this? Do I need a different threaded bushing? Can I just run a slightly larger tap through it? It threaded about a third of the way before it was so tight I started stripping the hex head insert in the top of the strut...a totally differnt problem.

Appreciate any advice!

Posted by: Jerry75914 Jul 28 2010, 09:53 AM

Posted by: tradisrad Jul 28 2010, 11:33 AM

Jerry, Are you talking about coil-overs not fitting? Or the nut that holds the strut in the car? I am not sure what the threaded bushing is.
-Rob

Posted by: Jerry75914 Jul 28 2010, 11:55 AM

Hi Rob!
It's the conical "nut" that holds the top hat looking gizmo on the coil. The nut that goes on last from the trunk is fine (came with the kit).

Posted by: tradisrad Jul 28 2010, 12:13 PM

MY best guess is that it is the wrong thread pitch.

Posted by: jcd914 Jul 28 2010, 01:27 PM

IIRC Bilstein's use a finer thread pitch than all the other rear shocks.

Jim

Posted by: tradisrad Jul 28 2010, 01:58 PM

Jerry I may have some other conical nuts at home, but I bet they are for the Boge or some other strut. I'll look for them and let you know what I find.

Posted by: Jerry75914 Jul 28 2010, 03:27 PM

thanks Rob! I'm going to try and tap it to be jsut slightly larger...I called Porsche Parts Heaven and asked if there was a differnt one for different shocks and he said they should all be interchangeable....oh well!

Posted by: kg6dxn Jul 28 2010, 04:13 PM

One of my Bilstein's was like that. It was bent. The conical nut would screw on fine on my other set.

Posted by: Jerry75914 Jul 28 2010, 11:35 PM

Congrats to everyone that thought it might be a thread pitch issue...it was looking at it tonight, without the red mist of frustration, the Konis were definitely a finer pitch. I re-tapped the bushing with a 12mm, 1.5 pitch die and it screwed on like butta...

thanks for the advice all!

Posted by: tradisrad Jul 29 2010, 08:58 AM

Good to hear. I was going to see if I had any for you, but now I don't need to.