See this for more info: Choose Your Flywheel And Clutch →
For Mostly Street Use try to keep a “single” sprung hub so that engagement is less jarring, but if you need the extra rotating mass and don’t mind a really aggressive pedal you can go unsprung.
We recommend the ACT that is on our website for 580 ft lbs (600hp) ACT NZ2-HDG6 (6 puck, sprung hub, HD pressure plate; ACT NZ2-HDG6). If you are going to be upgrading your engine soon, ACT pressure plates and clutch discs are interchangeable so you can upgrade just the disc and get an extra 150 ft lbs out of your clutch for only a couple hundred dollars.
Another cheaper option is the Competition Clutch.
For Mostly Track Use try to go with “multi” 7.25” Tilton 2-plate cerametallic or 3-plate metallic. Cerametallic wears a bit slower, but weighs a bit more than metallic. Metallic sounds more broken. Lots of good racecar noises. This is a good thing. Cerametallic doesn’t offer 3 disc, so a good feeling pressure plate caps around 760 ft lbs.
Tilton 2-3 discs can be built to hold over 1300 ft lbs. More than the trans is likely going to be able to handle…. So power isnt the cap for these clutches
Pros: Very lightweight. Engine revs out quickly. Race Car sounds. Replacement disc packs are cheap.
Cons: Unsprung hubs = harsh engagement. RPM need to be high in order to slip it at all. Loading your trailer, or sitting in traffic will not be fun
For Mostly Street and Track with higher hp you can use the Tilton ST-246 (9.6”). ST-246 clutches are designed to provide high torque capacity, low wear rate, smooth shifting and good drivability. The ST-246 twin disc clutch kit is available with sprung-hub organic discs (850 lb-ft capacity). Right now only available for the JZ adapter kit.
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