3.9 TORSEN diff FULL SWAP FOR NA - Miata Turbo Forum - Boost cars, acquire cats.

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Old 10-22-2007, 04:35 PM   #1
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Default 3.9 TORSEN diff FULL SWAP FOR NA

I have a 3.9 Torsen diff from a 01 NB miata. The diff includes both halfshafts, a driveshaft, and the diff, which is everything to go from a open or viscous diff to a full torsen. It was purchased from miatapartsgroup.com A reputable miata distributor for $1100. The diff was never installed because the car was sold before I had a chance to install it. The 3.9 Gear ratio will not only give better gas mileage but longer gears, this is perfect for people who are going Forced induction or who maybe just want a longer fifth gear for the highway cruises (I know I hated cruising at 6k on the highway, in my NA). If you have any questions please ask, I'm open to offers but please be reasonable.

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Old 10-22-2007, 04:50 PM   #2
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Originally Posted by shifttosixth View Post
The 3.9 Gear ratio will not only give better gas mileage but longer gears, this is perfect for people who are going Forced induction or who maybe just want a longer fifth gear for the highway cruises (I know I hated cruising at 6k on the highway, in my NA).
Ever consider shifting out of 3rd
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Old 10-22-2007, 05:16 PM   #3
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Ever consider shifting out of 3rd
BAHAHHAHAHAAHAHAHAAHAHAHAHHAHAAA
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Old 10-22-2007, 06:15 PM   #4
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I just picked up a set for $700 from a local dealer... Except i have no idea what final drive is on it.... lol!
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Old 10-22-2007, 08:04 PM   #5
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Old 10-22-2007, 11:06 PM   #6
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Ever consider shifting out of 3rd
seriously, 6k in 5th in any miata will have you over 100.
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Old 10-23-2007, 12:29 AM   #7
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i think 5200 is more reasonable, but still higher then i'd like... it is a great speeding deterent however
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Old 10-23-2007, 12:36 AM   #8
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3.9 ... im gonna be going 3.9 w/ rx7 diff soon. Until then the car is on jacks
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Old 10-26-2007, 05:12 AM   #9
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still for sale?
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