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Using 944 suspension parts for 924S

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Old 12-13-2017, 12:00 PM
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Todd951968
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Default Using 944 suspension parts for 924S

I'm planning on rebuilding my '87 924S tired suspension and want to know if I can use 944/Turbo struts (such as M474 option koni) as straight bolt on? I know the 924S uses steel control arms and the 944 Turbo uses aluminum so want to know if the struts will work on the older style steel control arms.

Also, if anyone has advice on a suspension package that would work well on a DE(first)/Street (sometimes) set up. Assuming I can use the 944 series M474 or similar, I would go with those and 250# springs, either Turbo or 968 M030 sways, and rear coil overs. I don't want to change the rear torsion bars so any advice on a coil-over rear shock with helper spring would be appreciated.
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Old 12-19-2017, 04:08 PM
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Originally Posted by Todd951968 View Post
I'm planning on rebuilding my '87 924S tired suspension and want to know if I can use 944/Turbo struts (such as M474 option koni) as straight bolt on? I know the 924S uses steel control arms and the 944 Turbo uses aluminum so want to know if the struts will work on the older style steel control arms.

Also, if anyone has advice on a suspension package that would work well on a DE(first)/Street (sometimes) set up. Assuming I can use the 944 series M474 or similar, I would go with those and 250# springs, either Turbo or 968 M030 sways, and rear coil overs. I don't want to change the rear torsion bars so any advice on a coil-over rear shock with helper spring would be appreciated.
Just fit Bilstein B6 inserts in the original front legs and replace the rear damper units with Bilstein B6, then either fit harder front springs 951 ? or lowered weltmeister etc...and an 18mm rear Sway bar

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Old 12-22-2017, 12:50 PM
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Todd, you can fit the Turbo sealed struts but not without modding the spindle on your car to make it happen. I agree with just replacing the front inserts and rear shocks with either Koni or Bilstein.
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Old 02-01-2018, 02:23 PM
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I'm currently researching the same for an 87S I picked up. Deciding between Koni and Bilstein. Anyone have experience with the 18mm bar creating too much over steer? I read that in a few posts. 14mm seems to come up allot when matching to the existing front, which I believe is 21 or 22.
+ 1 For Paragon. I have used them before and plan to again once I have a solid plan.
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Old 02-02-2018, 11:21 PM
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Good question.

So, if I understand this correctly - for the 924S body, I can bolt on the engine crossmember from a late model 944 and then bolt on the control arms? If so, will the rest of the front suspension item simply bolt up as well?

Same line of thinking goes for the rear suspension...
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Old 02-02-2018, 11:24 PM
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Originally Posted by Jay Wellwood View Post
Good question.

So, if I understand this correctly - for the 924S body, I can bolt on the engine crossmember from a late model 944 and then bolt on the control arms? If so, will the rest of the front suspension item simply bolt up as well?

Same line of thinking goes for the rear suspension...
The engine cross members are the same on the 924S and late 944 in terms of suspension attachment points. The rear suspension components are the same except the hubs and the lack of provisioning for abs sensors.
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Old 02-04-2018, 03:41 AM
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Originally Posted by Jscaramella View Post
Anyone have experience with the 18mm bar creating too much over steer? I read that in a few posts. 14mm seems to come up allot when matching to the existing front, which I believe is 21 or 22.
If not mistaken, your '87 should have been fitted with a 23 mm bar from the factory. A micrometer would confirm or deny. Most early cars fitted with a 20 mm bar did not even sport a rear bar.

To answer your question...depends, on the rest of your suspension and whether or not your car is a track/lightweight or a street/stock weight. The factory fitted a 24 mm/18 mm combination on the '86 turbo...and in that car/configuration, the 18 mm bar does not create too much over steer. In fact, depending on speed and corner, barring any trail braking, that chassis still has a tendency to push/under steer.
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Old 02-04-2018, 07:46 AM
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I have yet to measure the front bar, but this car did not come equipped with a rear bar from the factory.
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