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924S handling mods

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Old 07-04-2020, 11:52 PM
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dblower924
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Default 924S handling mods

I’ve got an ‘87 924S and I want to make it tighter and handle nicer. I’m not so worried about power, it’d be nice but I’d rather it go around a bend than smoke guys at the lights. So let’s hear the suspension, sway bar, etc mods you guys recommend. Thanks!
Old 07-05-2020, 12:02 AM
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Van
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Fresh shocks and bushings are a good place to start. Oh, and good tires, too.
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thomasmryan (07-05-2020)
Old 07-05-2020, 01:47 AM
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dblower924
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Originally Posted by Van
Fresh shocks and bushings are a good place to start. Oh, and good tires, too.
Yeah for sure. I’ve already got some 16” D90’s with some fresh rubber to put on. Just before I bought the car it got new yellow Koni’s in the rear, and it’s easiest to do that all around. But I’d like to stiffen it up from there too.
Old 07-05-2020, 08:01 AM
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924RACR
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+1 for shocks and bushings.

I'm not a fan of the Konis; better than most stock-ish options, but Bilsteins are far superior, I've had the HDs on my 931 for a LONG time and they still run great. Non-adjustable, but you don't need that for a street car.

Bushings - mainly the strut mounts and a-arm bushings front and rear. Make sure your steering's tight too, balljoints along with tie rod ends. For bushings, I am for sure a fan of stock new rubber for the street, I have sphericals on the racecar but they woulnd't last on the street. Then again, I live in the Detroit area, YMMV. Just new rubber improves things so much over worn stock, without squeaking and harshness.

Tires are a big factor too.

But I would definitely throw swaybars in when possible, front and rear, tame the hilarious amount of body lean these cars have. I think the 924S is better than the 2.0L cars, but still, there's much more to be gained for confidence in cornering with good bars.

Can't personally recommend any, though; my 931 street car is stock other than the Bilsteins, and the racecar is ALL spring - about 6x stiffer than stock, doesn't need bar to make up. Pretty stiff on the ride, though...
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thomasmryan (07-05-2020)
Old 07-05-2020, 12:10 PM
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thomasmryan
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swap out ALL the aged rubber bushings including the spring plate rubber. in stock form with good tires you should be in the high point eight g zone.

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Old 07-06-2020, 03:23 AM
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bonus12
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I think my next suspension upgrade, and one of the few mods on my 951, will be a strut brace. Many threads on this forum give positive reviews unanimously. That's what I would recommend after fully refreshing everything else mentioned in this thread.
Old 07-06-2020, 08:25 AM
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thomasmryan
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it took me a 1000 miles to get the alignment/pressures set where all four tires would break traction at the same time.
Old 07-06-2020, 09:12 AM
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V2Rocket
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i have the following, it is sharp and goes where i point it with a hint of oversteer if you're too exuberant.

200# front springs
26mm torsion bars
25.5 front sway
18mm rear sway
standard (newer) rubber bushings all around
stock-spec (newer) Boge/Sachs shocks

its much stiffer than stock but still usable on typical American quality roads with bumps and holes and racoons to go over. i wouldnt go any stiffer for a regular-driver car though.
Old 07-08-2020, 09:12 AM
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jjeffries
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V2, that’s a useful recipe. What do you do for ride-height settings? Do those front springs create a lowering that you then match in the rear via indexing adjustment?

thanks,
John



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