The e36 m3 evo diff is worth a look as it fits in the e46 casing we have and is fully mechanical.
If it ever needs fixing I will most likely get it rebuilt with a 3.91 cwp. Just the standard one, perfectly happy with it tbh and more than tough enough for my needs so far. Click here for more detail and explanation of the core charge.įAQ: For a full FAQ on the custom diff process, click here.TomK, I'm guessing you are running a plate diff in yours? You have a maximum of 30 days from the time you receive the diff to send it back us for a refund. If we are building a diff from our own stock a refundable core charge will apply until we get your original diff back. The race carrier is also much lighter than the standard LSD units. The spring tension and ramp angles can be customized for your preferences although there is a "hot setup" for SE46 cars already. The coil springs inside the carrier control preload of the discs ensuring the limited slip is working consistently even as the discs wear. We can also build the diff in a different way if you prefer more or less clutch discs or a different style of limited slip.Ī full race limited slip carrier option uses 6 clutch discs and coil springs for a completely tunable race diff. This diff also works great for other E46 track cars (not just SE46). The 90deg decel will not engage the clutches so the inside drive wheel will not be pushing the car straight while you are executing braking and turn-in. The 30deg angle on acceleration will engage the clutch discs sooner than a factory or "standard" LSD and give you outstanding traction accelerating out of corners. This setup has been tested and developed extensively on E46 330 and E46 M3 racecars. Our ideal SpecE46 diff is built with these options: 3-disc limited slip with 30/90 ramp angles, polished gears and polished carrier bearings, and the race carrier (see below). Don't sit and wait for your car to hook up in the corner while someone else has already gone by! The non-M E46 did not come with a limited slip so the benefits of using one are obvious - put down as much power as early as possible in the corner and gain more top speed on the straights. If you're not running one of these SE46 diffs you can expect to be passed by someone who is. The internal parts of the differential are otherwise unrestricted, including the use of limited slip units." (as of September 2015). For the Spec E46 racing class the rules call for "3.46 gear ratio, factory housing, flanges, and mounting points. The differential is one of the key components of any race car build.
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