Nismo clutch and diff's released
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Performance Nissan
Performance Nissan
Joined: Feb 2003
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From: Duarte, Calif
Originally posted by Mr. Potato Head
The NISMO clutch disc and plate have a slightly heavier pedal feel than stock. Shift effort is raised also. This clutch has no springs and is not as smooth engaging as the stock clutch. I don't know how they could say that. However, it is easily modulated and very streetable. But the comparison to the stock clutch made above is inaccurate.
The NISMO clutch disc and plate have a slightly heavier pedal feel than stock. Shift effort is raised also. This clutch has no springs and is not as smooth engaging as the stock clutch. I don't know how they could say that. However, it is easily modulated and very streetable. But the comparison to the stock clutch made above is inaccurate.
.. I will look up a couple people we have sold them to and get their opinions, and I apologize in advance if I've mislead anyone. Jeff
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From: Maryland
Originally posted by Jeff@Performance
Sorry, I don't agree with you. Unless maybe my stock clutch was screwed up from the beginning? Maybe a difference between an 03 and 04? I feel the car shifts better and without a doubt is lighter on the pedal effort..... hum.. I need to mull this over a bit. The last thing I ever want to do is give someone the wrong advice. In my spare time.. .. I will look up a couple people we have sold them to and get their opinions, and I apologize in advance if I've mislead anyone. Jeff
Sorry, I don't agree with you. Unless maybe my stock clutch was screwed up from the beginning? Maybe a difference between an 03 and 04? I feel the car shifts better and without a doubt is lighter on the pedal effort..... hum.. I need to mull this over a bit. The last thing I ever want to do is give someone the wrong advice. In my spare time..
.. I will look up a couple people we have sold them to and get their opinions, and I apologize in advance if I've mislead anyone. Jeff
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Joined: May 2002
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From: Smackahoe Blvd
Originally posted by pimp1911
Will this increase torque to the rear wheels. And if so by how much.
Will this increase torque to the rear wheels. And if so by how much.
What an LSD does is start to feed power to the opposite side of the car as one side begins to slip. The NISMO unit is similar to my Cusco in that it uses clutch plates to do this. As torque is applied through the diff, the clutches are pushed together. This happens whether one wheel is slipping or not. The locking percentage is how much slip is allowed. 100% would mean a solid axle! So now imagine the ice scenario again. You would still be able to move forward because the wheel with traction would get power.
The stock Nissan LSD is not a clutch unit, it's a Viscous unit. It uses a liquid that solidifies as it's heated. It's heated when there is friction caused by the different rotational speeds of the right and left side wheels. This makes for very smooth, but slow engagement. Ultimately, it does not offer enough of the LSD action to be useful for the track, but for most street use, it's OK.
Originally posted by raceboy
No, it will not increase torque to the rear wheels. What it will do is maximize traction both in a straight line and while cornering. What happens in an open diff is that as one wheel begins to slip, all the power is routed to the slipping wheel!! Not very good for accelerating! Imagine the left tire on ice and the right on concrete. The tire on ice would just spin and the tire with all the traction would stand still.
No, it will not increase torque to the rear wheels. What it will do is maximize traction both in a straight line and while cornering. What happens in an open diff is that as one wheel begins to slip, all the power is routed to the slipping wheel!! Not very good for accelerating! Imagine the left tire on ice and the right on concrete. The tire on ice would just spin and the tire with all the traction would stand still.
good explanation. but with the z, dont both tires spin. we dont get that 1 tire spins while 1 doesnt move effect...right?
i dont know much about differentials.
so what kind of a diff. does the 350z have if it isnt what you already mentioned.
either way....the "maximize traction" part sounds very nice. this is in the top 5 on my things to do list.
[i]
What I am wondering is why it requires new axle ends (that go into the diff housing) and bolts? Or is that just in the picture? Hell, I paid over $1000 for my Cusco RS 1.5 way and I still need to get some other parts to make it work. I thought I read somewhere that the Nismo diff is under $900, a smokin deal (wish I waited, but we had no idea at the time if the diff was ever going to come in). [/B]
What I am wondering is why it requires new axle ends (that go into the diff housing) and bolts? Or is that just in the picture? Hell, I paid over $1000 for my Cusco RS 1.5 way and I still need to get some other parts to make it work. I thought I read somewhere that the Nismo diff is under $900, a smokin deal (wish I waited, but we had no idea at the time if the diff was ever going to come in). [/B]
The 350Z comes with 2 types of differential.
A differential is a device to transmitt torque to the rear wheels and also allow the outide wheel in a corner to spin faster than the inside wheel, otherwise the tires would have to slip across the road in order for the car to go around a corner.
The Base Z model comes with a 2 pinion "open" differential, all other Z models, the Enthusiast, Performance and Track models, come with a 4 pinion viscous limited slip differential.
The "open" differential of the Base model does not have the capability to transmit much torque to the wheel with the most traction, it has what is called a 0% locking factor. The wheel with the least traction gets essentially all the drive torque.
The viscous LSD of on the other hand has a friction device that couples the rear wheels together with a connection that contains a silicon fluid and some vanes connected to each side of the differential in the fluid. When the one side of the differential spins faster then the other side the fluid thickens and couples the sides together, transmitting torque to the wheel with greater traction. How much torque can be transmitted is limited, but greater than the open differential-I don't know what the locking factor is, I would guess around 20%.
The Nismo LSD has plates within it that are driven by the force on the pinion gear shafts that increase the friction within the differential when one wheel spins faster than the other. This is accomplished by coupling the output shafts of the differential to the case of the differential across the friction plates.
The percentage of torque that can be driven to the wheel with the most traction is user selectable in the Nismo at 60, 80 or 100%. This means that with the 100% locking factor, all the torque going to the spinning wheel also goes to the opposite wheel, i.e. both wheels are spinning at the same speed. This also decreases the ability of the differential to work as a differential when the car is going around a corner, hence all the racket when the diff is set at 100%. A setting of 60% decreases the amount of torque that can be sent to the wheel with the most traction, but increases the drivability of the car for going around a corner at slow speeds. Even at high speeds a 100% locking factor can lead to corner entry understeer and decreased turn in response.
A differential is a device to transmitt torque to the rear wheels and also allow the outide wheel in a corner to spin faster than the inside wheel, otherwise the tires would have to slip across the road in order for the car to go around a corner.
The Base Z model comes with a 2 pinion "open" differential, all other Z models, the Enthusiast, Performance and Track models, come with a 4 pinion viscous limited slip differential.
The "open" differential of the Base model does not have the capability to transmit much torque to the wheel with the most traction, it has what is called a 0% locking factor. The wheel with the least traction gets essentially all the drive torque.
The viscous LSD of on the other hand has a friction device that couples the rear wheels together with a connection that contains a silicon fluid and some vanes connected to each side of the differential in the fluid. When the one side of the differential spins faster then the other side the fluid thickens and couples the sides together, transmitting torque to the wheel with greater traction. How much torque can be transmitted is limited, but greater than the open differential-I don't know what the locking factor is, I would guess around 20%.
The Nismo LSD has plates within it that are driven by the force on the pinion gear shafts that increase the friction within the differential when one wheel spins faster than the other. This is accomplished by coupling the output shafts of the differential to the case of the differential across the friction plates.
The percentage of torque that can be driven to the wheel with the most traction is user selectable in the Nismo at 60, 80 or 100%. This means that with the 100% locking factor, all the torque going to the spinning wheel also goes to the opposite wheel, i.e. both wheels are spinning at the same speed. This also decreases the ability of the differential to work as a differential when the car is going around a corner, hence all the racket when the diff is set at 100%. A setting of 60% decreases the amount of torque that can be sent to the wheel with the most traction, but increases the drivability of the car for going around a corner at slow speeds. Even at high speeds a 100% locking factor can lead to corner entry understeer and decreased turn in response.
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Joined: Mar 2005
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From: England
Originally Posted by fdao
Hmmm. I wonder how much stiffer the clutch will be with the Nismo set up.
My Nismo is actually LIGHTER than my previous stock clutch pedal feel; but then I think my OEM clutch may have been faulty; it went after 14k. I have checked with someone else with a late 2003 Z (2004 model year), and my Nismo is slightly heavier than theirs.
Last edited by 350doc; Apr 30, 2005 at 12:53 PM.
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