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06-27-2012, 10:47 AM | #1 |
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OS Giken LSD
Has anyone replaced their OEM LSD with an OS Giken clutch type LSD? If so did you dyno?
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06-27-2012, 10:53 AM | #3 |
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I'm curious about the torque curve with the OS Giken.
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06-27-2012, 10:56 AM | #5 |
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Not sure how a LSD would change anything in regards to torque or power.
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06-27-2012, 11:10 AM | #6 |
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I'm not sure either, but got this off their website: "The OS Giken Traction Control LSDs are much like other clutch type LSDs in that they offer the quick, positive response that some drivers prefer vs. a gear based or torque biasing differential..."
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06-27-2012, 11:13 AM | #7 |
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That just refers to the way the locking mechanism works in controlling the disks. Has nothing to do with power output on the vehicle.
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06-27-2012, 11:19 AM | #8 | |
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Dinan lowers the stock 3.15 final drive ratio to a 3.45, taking full advantage of torque multiplication for a substantial 9.5% increase in torque delivered to the road! The improved acceleration comes with only a minor increase in engine speed at cruise. |
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06-27-2012, 11:21 AM | #9 | |
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06-27-2012, 11:25 AM | #10 | |
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06-27-2012, 11:27 AM | #11 |
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Agree - However, the OS Giken LSD is mechanically different than the OEM gear-based LSD. That's why I was wondering whether the torque curve would be different. I certainly wouldn't expect any increase in peak torque, but maybe a peak shift in the curve to lower RPMs...or not
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06-27-2012, 11:28 AM | #12 |
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06-27-2012, 11:29 AM | #13 | |
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06-27-2012, 11:55 AM | #14 | |
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Unless you are spending life on the track this is a very expensive upgrade..and most will be okay w the stock LSD Correct..but most do go with more aggresive gearing in conjuction with LSD.. |
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06-27-2012, 11:56 AM | #15 | |
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06-27-2012, 11:57 AM | #16 |
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But they are mutually exclusive and the OP is asking about the LSD. LSD does not change torque/power curves. If we wanna start talking about gears, then that's a completely different subject.
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06-27-2012, 11:59 AM | #17 |
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06-27-2012, 11:59 AM | #18 |
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my bad
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06-27-2012, 12:02 PM | #19 |
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Take it from me..stick with the stocker..its a great unit (if we had open diffs like on the 335i then yea)..doing LSD swaps is ever so tricky..we are talking about microns of tolerances..your installer has to be spot on..and the OSG make noises..you have to use OSG's gear oil..which is a very heavy weight oil... 80W-250
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06-27-2012, 12:04 PM | #20 |
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06-27-2012, 12:07 PM | #21 | |
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06-27-2012, 01:29 PM | #22 |
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The only way the diff would make the car more powerful is if the differential offered less friction in its rotational assembly. Basically how much applied force does it take to turn the gears. The engine would still be the same but the drivetrain loss percentage would be less, so you would get more power to the ground.
The Dinan diff would be ok for a NA car, but would probly be too short for a supercharged car. Your also gonna be cruising a few 100 more RPMs on the freeway also. If its worth it is up to your own application and use. |
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