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Adjusting H&R Springs Ride Height


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#1 the-goose

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Posted June 20, 2009 - 07:41 PM

When I bought my 993 it had lowered H&R springs and Bilstein shocks on it. It is sitting very low and the standard tires are rubbing the arches too much on slight bumps, making a terrible noise and damaging both bodywork and tires. I want to raise the suspension between one half and one inch. Does anybody know if that is possible on this set-up or how to go about it...Cheers! G


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#2 ericinboca

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Posted June 21, 2009 - 05:05 AM

When I bought my 993 it had lowered H&R springs and Bilstein shocks on it. It is sitting very low and the standard tires are rubbing the arches too much on slight bumps, making a terrible noise and damaging both bodywork and tires. I want to raise the suspension between one half and one inch. Does anybody know if that is possible on this set-up or how to go about it...Cheers! G


Assuming the 993 has coilovers.....Take a look to see if the Bilsteins are threaded. If so, then likely it is a simple job of rotating the two "nuts" on which the springs sit. You will need two spanner wrenches, assuming two nuts. You loosen the bottom one, and then raise the car by rotating the other...then move the second nut tight against the first.

If the damper is not threaded, then you will need longer springs or helper springs and divider plates.

Note either way, you will need an alignment after raising - it will change your toe settings.

For reference, here is a picture of an old front H&R coilover from a 986 with a couple of spanner wrenches. Note the threaded body and the two "nuts".

coilover.jpg
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#3 the-goose

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Posted July 09, 2009 - 05:43 PM

Thanks for the tips and the pics - I looked and the shocks have thread so its coil over adjustible shocks. I don't have the wrenches so will let the tire shop do the whole adjustment...G


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#4 the-goose

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Posted September 02, 2009 - 12:04 PM

Eric, thanks for the tips. The problem is the Bilstein shock (see pic) has an flanged extension piece that connects to the stabiliser bar tierod. This flange piece threads around the whole shock like a nut

it to acts as part of the spring adjustment mechanism. Here is the problem, I can’t wind it up and down the shock because the extended piece is linked to the tierod. If I remove the tierod bolt I can't turn it because it hits the prop shaft and hub....

Can I do the following:

A) remove the bottom end bolt of the actual shock and twist the whole shock a few times at the bottom end allowing it to "thread" up the “nuts” – will this damage the shock itself? Plus what would happen if I undo the shock at the bottom – will the whole hub assembly drop to the ground/shall I support it?
B) This question is more to the real point - Which way do I turn the nuts? Will the car lift, when the spring (not shock) is longer or shorter? I.E. do I compress the spring further or let it extend...

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