IS300 Torsen LSD into IS250
08-12-11, 11:22 AM
#16
So let me get this straight, the older is300 has a real lsd and the is250 only has a semi LSD? Do you know what exactly is a semi-LSD and how is different from a torsion LSD? Its one of those mysteries on the Lexus brochure that no one really talks about. The Semi LSD and the 2-piston brake calipers on the IS250 (I only see one piston).
Jeff
08-12-11, 12:53 PM
#17
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Personal perference, I prefer the mechanical/helical gears of a Quaife LSD :
http://www.autotech.com/product/oem-...arts-clearance
http://www.autotech.com/product/oem-...arts-clearance
08-12-11, 01:14 PM
#19
Simple give even power to the rear wheel so you get better traction. Most people dont need this for daily driven cars. Its great for the places where it snows or those who track there car. I had LSD on my ITR and M3 E46. It did wonder in the snow time for a rwd car.
08-12-11, 01:31 PM
#20
It also affects cornering performance as well.
There is a lot of information on www.torsen.com related specifically to helical gear designs. Clutch and other designs will vary quite a bit in their application.
Jeff
There is a lot of information on www.torsen.com related specifically to helical gear designs. Clutch and other designs will vary quite a bit in their application.
Jeff
08-12-11, 02:25 PM
#22
Comes in handy in general,. especially in snow conditions.
With open diff in know, one tire up in the air, you're almost out of luck by getting stuck as the wheel on the ground won't spin up. True locking diff, won't have that issue since the tire that's still on the ground will spin up.
With open diff in know, one tire up in the air, you're almost out of luck by getting stuck as the wheel on the ground won't spin up. True locking diff, won't have that issue since the tire that's still on the ground will spin up.
Last edited by Sango; 08-12-11 at 02:28 PM.
08-12-11, 02:27 PM
#23
As for the IS250 2 piston caliper info, look here:
http://www.lexus.com/models/IS/detai...fications.html
Under Chassis\ Brake size, it clearly states:
Two-piston front calipers. 11.6-in ventilated front, 11.4-in solid rear discs.
By the way, that is Lexus's own website.
Last edited by evogt500; 08-12-11 at 02:30 PM.
08-12-11, 02:39 PM
#24
Yeah Lexus.com's information is weird/off on a few issues. Not sure why that is.
As for why you'd want an LSD, it affects the way the car handles in more ways than just launching, etc. Superior handling (especially when tracking the car, but even just spirited driving through the mountains, etc.). It's not just for high powered cars either, there's a reason cars like the AE86 came with an optional LSD, as well as many other cars.
Torsen LSD is superior in almost all situations, that's why.
Jeff
As for why you'd want an LSD, it affects the way the car handles in more ways than just launching, etc. Superior handling (especially when tracking the car, but even just spirited driving through the mountains, etc.). It's not just for high powered cars either, there's a reason cars like the AE86 came with an optional LSD, as well as many other cars.
Torsen LSD is superior in almost all situations, that's why.
Jeff
Last edited by Jeff Lange; 08-12-11 at 02:45 PM.
08-12-11, 07:33 PM
#26
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Trying to achieve this maybe?
http://www.youtube.com/watch?v=EfWi1OMmg6I
IS250 with 1.5 way LSD....
I can't think of others.. lol
http://www.youtube.com/watch?v=EfWi1OMmg6I
IS250 with 1.5 way LSD....
I can't think of others.. lol
08-12-11, 07:43 PM
#27
Trying to achieve this maybe?
http://www.youtube.com/watch?v=EfWi1OMmg6I
IS250 with 1.5 way LSD....
I can't think of others.. lol
http://www.youtube.com/watch?v=EfWi1OMmg6I
IS250 with 1.5 way LSD....
I can't think of others.. lol
http://www.youtube.com/watch?v=ISlMOj5DUF8
http://www.youtube.com/watch?v=DFo91DHCsdw
-------------------------
This should would show how the differential worsk, lego style!
http://www.youtube.com/watch?v=lpf2pK-gGKk
Last edited by Sango; 08-12-11 at 07:53 PM.
08-13-11, 07:22 PM
#28
A couple of parts came in today, so I spent a bit more time cleaning up this diff before it goes in my car. Still waiting for 1 of the seals, the fill plug and the case cover bolts. I reused the old bolts to get it assembled today, I'll change them out when the new ones arrive. Why am I changing them? I don't know, I'm dumb; it's best not to ask why.
Cleaned, repainted housing, IS300 axle stubs removed (these are not reused for the IS250), seals removed:
Cleaned differential cover, type 1281 silicone sealant applied:
Cover installed, drain plug installed, new side seal installed, looking relatively decent now:
Just need the last few bits and it can go into the car. At this point it's basically just an R&R on the differential carrier now, as from the outside both diffs look essentially identical. It's the inside that counts though
.
Jeff
Cleaned, repainted housing, IS300 axle stubs removed (these are not reused for the IS250), seals removed:
Cleaned differential cover, type 1281 silicone sealant applied:
Cover installed, drain plug installed, new side seal installed, looking relatively decent now:
Just need the last few bits and it can go into the car. At this point it's basically just an R&R on the differential carrier now, as from the outside both diffs look essentially identical. It's the inside that counts though
.Jeff
