LSD for a 4 lug RX7 clarity
09-07-20, 06:30 AM
#1
Full Member
Thread Starter
LSD for a 4 lug RX7 clarity
Can someone please tell me what parts I need exactly to upgrade my diff in my 4 lug rx7? Upgrade meaning put in an LSD into the stock pumpkin. I researched a lot but i couldnt exactly get a clear answer. I have an 87 4 lug FC. I know the right thing to do is prob just convert it to 5 lug parts but its too much work for what the car is.
09-07-20, 08:34 AM
#2
Rotary Freak
Can someone please tell me what parts I need exactly to upgrade my diff in my 4 lug rx7? Upgrade meaning put in an LSD into the stock pumpkin. I researched a lot but i couldnt exactly get a clear answer. I have an 87 4 lug FC. I know the right thing to do is prob just convert it to 5 lug parts but its too much work for what the car is.
I believe S5 axles are slightly different (or it may be the stub shafts), so an S5 diff may require more work.
If you want a Turbo differential, you also need turbo axles and a custom driveshaft of the same length but with a flange for the turbo diff on the rear rather than an NA flange. The Turbo flange has a wider bolt pattern. But this is extra expense and difficulty that you don't need if you have a NA car.
Now if you're dead set on installing an LSD into your existing pumpkin, I haven't done that. But you don't actually need to since all parts are compatible between the stock Open unit and LSD unit.
09-07-20, 08:54 AM
#3
Full Member
Thread Starter
You can just install the stock LSD (the whole differential, pumpkin and all) from a S4 GXL model into the car. It should be a drop in change, the axles are the same between 4 and 5 lug models.
I believe S5 axles are slightly different (or it may be the stub shafts), so an S5 diff may require more work.
If you want a Turbo differential, you also need turbo axles and a custom driveshaft of the same length but with a flange for the turbo diff on the rear rather than an NA flange. The Turbo flange has a wider bolt pattern. But this is extra expense and difficulty that you don't need if you have a NA car.
Now if you're dead set on installing an LSD into your existing pumpkin, I haven't done that. But you don't actually need to since all parts are compatible between the stock Open unit and LSD unit.
I believe S5 axles are slightly different (or it may be the stub shafts), so an S5 diff may require more work.
If you want a Turbo differential, you also need turbo axles and a custom driveshaft of the same length but with a flange for the turbo diff on the rear rather than an NA flange. The Turbo flange has a wider bolt pattern. But this is extra expense and difficulty that you don't need if you have a NA car.
Now if you're dead set on installing an LSD into your existing pumpkin, I haven't done that. But you don't actually need to since all parts are compatible between the stock Open unit and LSD unit.
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