FD Differential limits
10-18-12, 08:10 PM
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FD Differential limits
I'm about to start my build of my fd and I was wondering if I need to include an upgrade differential. I already will have solid diff mounts and a reinforcement brace but will the differential itself withstand the power. My set goal for the build was around 500 rwhp.
10-19-12, 12:00 AM
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You'll absolutely have to upgrade the differential. A lot of people stick with the S4 TII diffs. I went with a 1.5 way KAAZ LSD and the HPP 2in1 diff brace.
https://www.rx7club.com/group-buy-ce...brace-1002000/
https://www.rx7club.com/group-buy-ce...brace-1002000/
10-19-12, 03:03 PM
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My KAAZ unit is set at 100% lock, and it is EXTREMELY loud. I'm going to adjust the clutch plates to 66% and add a friction modifier to quiet it down. A lot of people rave about the slightly more expensive Carbonetic unit.
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10-19-12, 08:27 PM
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Idk if the carbon unit is stronger than the metal one, but the rx7.com group down in Texas uses them on their high-HP race cars and have never had an issue. I think a KAAZ or Carbonetic unit would be more than enough for 99% of FD owners out there.
The TII may be an inexpensive solution, but you have to look at the big picture. You're buying a used unit that *could* potentially fail at any moment, all while not offering the performance benefit of a locking unit that suits your particular needs(1 way, 1.5 way, 2way). If you absolutely cannot afford the aftermarket unit, then maybe a TII is for you. I prefer the peace of mind that comes with having a brand new unit with a lock that suits my needs.
The TII may be an inexpensive solution, but you have to look at the big picture. You're buying a used unit that *could* potentially fail at any moment, all while not offering the performance benefit of a locking unit that suits your particular needs(1 way, 1.5 way, 2way). If you absolutely cannot afford the aftermarket unit, then maybe a TII is for you. I prefer the peace of mind that comes with having a brand new unit with a lock that suits my needs.
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