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S Chassis Technical discussion related to the S Chassis such as the S12, S13, S14, and S15.


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Old 08-14-2023, 10:27 AM   #1
Thursday7
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If you're low go with a Parts Shop Max Super Angle or Heatmaker Hotside knuckle. The roll center correction will help make the car not feel like shit when very low. The MAX knuckle doesn't require a core and is well-priced.

If you're not low go with a standard modified knuckle. Most shops incorporate bump steer correction into the revised pick up point, but you won't see any roll center correction. B-Knuckle and Villains are good examples of this.
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Old 08-14-2023, 12:22 PM   #2
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Quote:
Originally Posted by Thursday7 View Post
If you're low go with a Parts Shop Max Super Angle or Heatmaker Hotside knuckle. The roll center correction will help make the car not feel like shit when very low. The MAX knuckle doesn't require a core and is well-priced.

If you're not low go with a standard modified knuckle. Most shops incorporate bump steer correction into the revised pick up point, but you won't see any roll center correction. B-Knuckle and Villains are good examples of this.


Already thought about PSM Knuckles tho
Sammit for example used/uses B-Knuckles with Ikeya Formula Tie Rod and JZX Tie rod end because of its strength and the kink for clearness.
Some other Japanese guy (Toshi) told me his Meihan Setup
B-Knuckles, Ikeya Formula Tie rod + ends - that?s it

Im curious now if the PSM knuckles would be compatible with ikeya formula and jzx tie rods - for strength etc.
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Old 08-14-2023, 01:34 PM   #3
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If strength's your goal, the PSM inner tie rod is probably the strongest out there. I personally prefer a standard Moog OE rod, anything short of a mistake and they will hold up. I'd rather have a tie rod bend and take the hit than anything else in there, namely the rack.

As for outers, I've never heard of using JZX. If your knuckle has bump steer correction, there's no need to run anything but an OE outer. Just make sure everything you buy is for S14. Most aftermarket companies use M14 inners, so make sure your outer is for S14 (S13 uses M12 thread).

The length of your inner is determined by the length of your FLCA and presence of rack spacers. For example, my S13 has 25mm extended FLCA, with the asymmetrical GK Tech NON OFFSET (fuck those) rack spacers. I run a GK Tech inner tie rod on the smaller spacer side (cut to length) and a Q45 inner on the largers spacer size, with Moog S14 stock outers. I love this setup. It's fully capable and easy to maintain.

https://zilvia.net/f/showthread.php?t=497539

This ^^ thread has been very helpful in determining your ITR length for your setup. Just know that if you need additional length, GK Tech's is longer than you'll ever need, and is fully threaded so you can cut to whatever size you need.
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