924S handling mods
#1
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!
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thomasmryan (07-05-2020)
#3
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.
#4
Addict
Rennlist Member
Rennlist Member
+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...
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)
#5
Drifting
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.
Last edited by thomasmryan; 07-05-2020 at 08:33 PM.
#6
Three Wheelin'
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.
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#8
Rainman
Rennlist Member
Rennlist Member
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.
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.
#9
Instructor
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
thanks,
John