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08-14-2005, 09:45 PM
Hello everyone, I got this Genuine Nismo GT Pro LSD (2-way) imported special order from japan, but since then I have decided to downsize my project. This is brand new in the box- never used or installed.
Wanted to start playing with my new camera, so here's a picture of everything: (20 plate GT Pro LSD, new genuine nissan vlsd output shafts, new nissan output shaft seals, new nissan differential bearings, new nissan ring gear bolts, new nissan rear cover gaske, new nismo gear oil for the diff):
http://iacs5.ucsd.edu/~clwang/sell/forsale.jpg
As you can see, everything is still brand new in box, and genuine Nismo and Nissan parts.. (hell, even the GT Pro stickers have Nismo part number stickers on them!, lol) :D doesn't get much better than that. I did open one of the output shaft boxes to show that these are indeed 6-bolt axles.
Take note that JSpec.com offers this complete kit for $1500 plus shipping (plus tax also, if you're in california).
Tech stuff on the Nismo LSD's:
Note: the Nismo GT Pro LSD will be referred to as the "GT Pro", and the Nismo Street LSD will be referred to as the "Street" from here on out.
You may know of the other "Street" Nismo LSD differentials (a few on this forum, or from the courtesy nissan site (http://www.courtesyparts.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=CP&Product_Code=38420-RS661))
But rest assured, this is much much better than that. The comparison is here on the nismo japan site. (http://www.nismo.co.jp/products/lsd/compare.html)
As you can see, this is a 20-plate clutch type LSD, compared to the Street which is only 12-plate. For comparisons, the older top level differential was the Nismo SSS, which was a 16-plate version. The Tomei Clutch LSD has 12-plates, the KAAZ Clutch LSD has 16-plates. The greater the number of plates and friction area the differential has, the smoother the lock-up action (during normal driving) of the differential, less noise, less heat, and less wear on the plates before they need replacing.
The GT Pro has 103mm diameter plates, while the Street is only 88mm diameter. Each plate on the GT Pro has 5505 mm^2 of friction area, while the Street and SSS differentials have 3530 mm^2 of friction area. Multiply this by the greater number of plates per side, and you can see the difference this makes. So much more friction surface area has the same effect as having more plates in the differential- less wear, less noise, less heat, smoother engagement.
The GT Pro also has adjustable initial (aka breakaway) torque for the plates- these adjust the lock-up and driving characterisitcs of the differential (some settings better for drag/drift, some better for daily driving, some better for mountain roads or track driving). The Nismo Street (and all aftermarket clutch-types that I know of) only has a fixed initial torque.
Also, the adjustment of the intial torque on the GT Pro differential is super easy- just pop the right output shaft off the differential, and insert a socket wrench into the differential. Turn the wrench to select different inital torques. Pop the output shaft back in, and you're done. As easy as it gets.
(note: some aftermarket differentials do mention changing initial torque, but to adjust theirs, you have to: find a source for some very obscure parts, buy the springs, take the pumpkin out of the car, open it up, take out the diff, disassemble the diff internals, put in different initial torque springs, and reassemble everything.. not easy by any means. repeat process if you want to change initial torque again)
The GT Pro has more aggresive clamping force than the Street LSD, due to the greater ramp angles on the internal cams (same ramp angles as the SSS LSD).
The GT Pro also has other benefits mentioned on the Nismo link (click on the red button things)- more plate "fingers" per plate, which gives the differential more smooth action (less chance of any unwanted binding).
So, I'll leave it at that. Didn't think this was going to turn into a Clutch-type Differential Tech post, but oh well. The more well informed you are of how kick-ass this differential is, the better offers I'll get (I hope).
If you learned something, please give this post a nudge upwards- I need money! :rolleyes:
Wanted to start playing with my new camera, so here's a picture of everything: (20 plate GT Pro LSD, new genuine nissan vlsd output shafts, new nissan output shaft seals, new nissan differential bearings, new nissan ring gear bolts, new nissan rear cover gaske, new nismo gear oil for the diff):
http://iacs5.ucsd.edu/~clwang/sell/forsale.jpg
As you can see, everything is still brand new in box, and genuine Nismo and Nissan parts.. (hell, even the GT Pro stickers have Nismo part number stickers on them!, lol) :D doesn't get much better than that. I did open one of the output shaft boxes to show that these are indeed 6-bolt axles.
Take note that JSpec.com offers this complete kit for $1500 plus shipping (plus tax also, if you're in california).
Tech stuff on the Nismo LSD's:
Note: the Nismo GT Pro LSD will be referred to as the "GT Pro", and the Nismo Street LSD will be referred to as the "Street" from here on out.
You may know of the other "Street" Nismo LSD differentials (a few on this forum, or from the courtesy nissan site (http://www.courtesyparts.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=CP&Product_Code=38420-RS661))
But rest assured, this is much much better than that. The comparison is here on the nismo japan site. (http://www.nismo.co.jp/products/lsd/compare.html)
As you can see, this is a 20-plate clutch type LSD, compared to the Street which is only 12-plate. For comparisons, the older top level differential was the Nismo SSS, which was a 16-plate version. The Tomei Clutch LSD has 12-plates, the KAAZ Clutch LSD has 16-plates. The greater the number of plates and friction area the differential has, the smoother the lock-up action (during normal driving) of the differential, less noise, less heat, and less wear on the plates before they need replacing.
The GT Pro has 103mm diameter plates, while the Street is only 88mm diameter. Each plate on the GT Pro has 5505 mm^2 of friction area, while the Street and SSS differentials have 3530 mm^2 of friction area. Multiply this by the greater number of plates per side, and you can see the difference this makes. So much more friction surface area has the same effect as having more plates in the differential- less wear, less noise, less heat, smoother engagement.
The GT Pro also has adjustable initial (aka breakaway) torque for the plates- these adjust the lock-up and driving characterisitcs of the differential (some settings better for drag/drift, some better for daily driving, some better for mountain roads or track driving). The Nismo Street (and all aftermarket clutch-types that I know of) only has a fixed initial torque.
Also, the adjustment of the intial torque on the GT Pro differential is super easy- just pop the right output shaft off the differential, and insert a socket wrench into the differential. Turn the wrench to select different inital torques. Pop the output shaft back in, and you're done. As easy as it gets.
(note: some aftermarket differentials do mention changing initial torque, but to adjust theirs, you have to: find a source for some very obscure parts, buy the springs, take the pumpkin out of the car, open it up, take out the diff, disassemble the diff internals, put in different initial torque springs, and reassemble everything.. not easy by any means. repeat process if you want to change initial torque again)
The GT Pro has more aggresive clamping force than the Street LSD, due to the greater ramp angles on the internal cams (same ramp angles as the SSS LSD).
The GT Pro also has other benefits mentioned on the Nismo link (click on the red button things)- more plate "fingers" per plate, which gives the differential more smooth action (less chance of any unwanted binding).
So, I'll leave it at that. Didn't think this was going to turn into a Clutch-type Differential Tech post, but oh well. The more well informed you are of how kick-ass this differential is, the better offers I'll get (I hope).
If you learned something, please give this post a nudge upwards- I need money! :rolleyes: