Plated R180 STi 4.44 Rear Diff
14 June 2015, 10:37 AM
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Plated R180 STi 4.44 Rear Diff
I have available a plated 4.44 R180 JDM rear diff.
In excellent condition.
Removed from a DCCD Version 5 STi Type R with low mileage (77k KMs / 48k miles)
£199 delivered (Mainland UK only).
In excellent condition.
Removed from a DCCD Version 5 STi Type R with low mileage (77k KMs / 48k miles)
£199 delivered (Mainland UK only).
Last edited by chiefinspector; 15 June 2015 at 10:26 PM.
16 June 2015, 12:03 PM
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Standard classic rear diffs (i.e everything bar the STi Type R's and STi Type RA's) are viscous.
"Viscous LSD's are speed sensing. The work by reacting to speed differences between the two axles. They are limited in the time it takes them to respond."
The plated R180 rear diff is a clutch-type LSD.
"Clutch type LSD's are torque sensing. They respond to torque input and/or torque differences across the drive shafts. They do not need to be waiting for a speed difference (as in wheelspin) to be doing their job. These types of LSD's are designated by their bias ratios. Basically what ratio of the torque at the low traction side can be redirected to the high traction side. The preload on the clutch plates ensures that the LSD can still do something even when there is no zero traction at one wheel, unlike viscous LSD's."
Another benefit of clutch type LSD's is that they can be tuned by altering ramp angles and preload settings. They are also more mechanically robust and therefore less likely to overheat / break.
They give more drive in lower grip conditions.
"Viscous LSD's are speed sensing. The work by reacting to speed differences between the two axles. They are limited in the time it takes them to respond."
The plated R180 rear diff is a clutch-type LSD.
"Clutch type LSD's are torque sensing. They respond to torque input and/or torque differences across the drive shafts. They do not need to be waiting for a speed difference (as in wheelspin) to be doing their job. These types of LSD's are designated by their bias ratios. Basically what ratio of the torque at the low traction side can be redirected to the high traction side. The preload on the clutch plates ensures that the LSD can still do something even when there is no zero traction at one wheel, unlike viscous LSD's."
Another benefit of clutch type LSD's is that they can be tuned by altering ramp angles and preload settings. They are also more mechanically robust and therefore less likely to overheat / break.
They give more drive in lower grip conditions.
Last edited by chiefinspector; 16 June 2015 at 12:04 PM.
27 June 2023, 10:46 AM
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So Can i use same Diff for a new Sti 6 speed Dccd trans. Even tho Ratios might change from 4.44 to lower. I don't care. Is it okay & safe?
That's all i need to know. Thank you. (I'm Building a GC8)
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