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toyota LSD compared to nissan LSD
Posted: Sat Jun 25, 2005 10:44 am
by shanegtr
how come the nissan LSD is better than the toyota one? I know toyota use friction plate clutches. What do the nissans use?
Posted: Sat Jun 25, 2005 5:12 pm
by -Scott-
Better ones.
Seriously, don't know. I'm fairly sure the Nissans are a ramp-loading type, but not sure about the Toyota.
Scott
Posted: Sat Jun 25, 2005 5:41 pm
by shanegtr
mmmm, never heard of a ramp loading type of LSD.
Posted: Sat Jun 25, 2005 6:52 pm
by dow50r
They have cones that get pushed together when torque is fed through, locking them up.
andrew
Posted: Mon Jun 27, 2005 3:00 pm
by prado4x4
The thing I can't figure out with Toyota, is why they continue to use the LSD's that they do. They do make some bloody good diffs that would be ideal.
My other car is a toyota soarer. It has a torsen type LSD (Torque Sensing). Basically the more torque aplied, the tighter it locks. This is all done mechanically. I would have thought these would be a lot better than thier normal LSD's.
Posted: Mon Jun 27, 2005 3:08 pm
by shanegtr
dow50r wrote:They have cones that get pushed together when torque is fed through, locking them up.
andrew
I know that type, got one like it in my torana, they work quite well
Posted: Mon Jun 27, 2005 3:14 pm
by dow50r
prado4x4 wrote:The thing I can't figure out with Toyota, is why they continue to use the LSD's that they do. They do make some bloody good diffs that would be ideal.
My other car is a toyota soarer. It has a torsen type LSD (Torque Sensing). Basically the more torque aplied, the tighter it locks. This is all done mechanically. I would have thought these would be a lot better than thier normal LSD's.
I think Toyota side on the legal...they make a good diff for on the road, no sideways on dirt like Nissan, no slide outs on greasy roads, or black marks on steep driveways that arnt straight.....and they offer lockers optional.... with ABS, they wont allow ABS disconnection in high range (where you can go fast enough to need ABS) so you can only lock the transfer in low range on an 80 series. etc etc etc
Posted: Mon Jun 27, 2005 8:33 pm
by Rainbow Warrior
Inside the MQ one is just friction plates, with a spring plates, but it seems to be a good LSD anyway.
Posted: Mon Jun 27, 2005 11:18 pm
by T.B
In the GU rear, you can actually adjust the spring tension to the point of making it a fully locked diff. Very good when the comp rules state you may only have a locker in the front. I also know that the patrol diffs are rated to 7 ton. If toyota diffs are so advanced in technology, why do so many of them break front diffs when reversing up a hill in low range?
Posted: Tue Jun 28, 2005 12:15 am
by Dozoor
T.B wrote:In the GU rear, you can actually adjust the spring tension to the point of making it a fully locked diff. Very good when the comp rules state you may only have a locker in the front. I also know that the patrol diffs are rated to 7 ton. If toyota diffs are so advanced in technology, why do so many of them break front diffs when reversing up a hill in low range?
Probly because most are a high pinion ,
they don,t have as much contact , as a normal design.
(maybe toys in reverse are more poweful)
Posted: Tue Jun 28, 2005 8:46 am
by dow50r
Dozoor wrote:T.B wrote:In the GU rear, you can actually adjust the spring tension to the point of making it a fully locked diff. Very good when the comp rules state you may only have a locker in the front. I also know that the patrol diffs are rated to 7 ton. If toyota diffs are so advanced in technology, why do so many of them break front diffs when reversing up a hill in low range?
Probly because most are a high pinion ,
they don,t have as much contact , as a normal design.
(maybe toys in reverse are more poweful)
Toyota stuffed up...they didnt design their 4wd's to go backwards up hills
Andrew
Posted: Tue Jun 28, 2005 11:13 am
by shanegtr
Toyota stuffed up...they didnt design their 4wd's to go backwards up hills
Andrew
Thats cause its more logical to go forwards
Posted: Tue Jun 28, 2005 7:06 pm
by Rainbow Warrior
T.B wrote:In the GU rear, you can actually adjust the spring tension to the point of making it a fully locked diff. Very good when the comp rules state you may only have a locker in the front. I also know that the patrol diffs are rated to 7 ton. If toyota diffs are so advanced in technology, why do so many of them break front diffs when reversing up a hill in low range?
Is that 7 ton pull, lift or carry?
Posted: Wed Jun 29, 2005 5:04 pm
by customhilux
good old hand brake gets mine workin.
Posted: Wed Jun 29, 2005 10:11 pm
by bigpat
Low- Reverse is way lower geared than Low 1st, so the torque loads would be absolutely huge!
The way that the helix angle is cut on a ring a pinion is that there is a force trying to separate them in operation. The thrust/taper roller bearings set up in the pinion assy are designed for forward movement, as is the angle that te gear is cut. In reverse the loads are totally different, and the bits aren't really designed for that!
Even though Nissan diffs are bigger, which means stronger (and more expensive), I reckon they are stressed in Low-Reverse too..........
Posted: Fri Jul 01, 2005 6:15 pm
by Bitsamissin
Nissan GQ/GU front diffs are 9.25" high pinion, 80/100 Cruisers are a 8" high pinion it's just the Nissan ones are bigger/stronger and probably better matched to the mass of the truck hence the failure rate of the Toyo front diffs in reverse.
Low range reverse would be pretty close to low range 1st gear in most vehicles (reverse and 1st gear ratio's are usually pretty similar).