For Product Info ▶▶▶ www.rallysportdirect.com/bran... Like us on Facebook ▶▶▶ www. rallysportdirect Today we install and review the Cusco RS 1.5 Way LSD and Cusco Rear Differential Cover on our 2014 Scion FR-S.
Torsen diffs do become open when 1 wheel is of the ground .When this happens during driving up a ramp or unleveled drive way all you need to do is just pull the E-brake ,this will apply resistance to the tires and is picked up as TQ values and drive will be applied to both wheels .Problem solved .
***** a 2 way is typically better suited for drift cars, since it fully locks during deceleration it helps with kicking the rear end out. A 1.5 way is usually preferred for road racing since it locks halfway during deceleration, which helps with trail braking but won't send you into a drift. Then both lock fully on acceleration to plant the power and allow the car to rotate well with the power down.
How does the 1.5 LSD help with braking, or how does it work? And, for street, is a 1.5 necessary, or would a one-way be better? and, would such an LSD cause potentially dangerous situations in normal street driving, like in the rain around an off ramp? I'm thinking maybe so, which is why OEM uses open diffs/Torsen
Do you know what settings the dif was set to when installed? Ie was it 100% clutch packs and all 12 springs as they come out the box or were the clutch packs and springs altered before installation?
Yeah you can re-use the shims, but you just want to check the measurements once you get the diff in. If it's out of spec, you would want to get the proper shims from Toyota or Subaru. Also you will reuse the ring and pinion, you just swap the ring gear over to the Cusco unit :) Thanks, Rick
+Colin Lu Noise is normal from a clutch type LSD, now depending on how loud and the type of noise it may not be normal. I would change the oil from the diff first and see if it helps and make sure to use fluid that is specific for a clutch type and that may help :) Thanks, Rick
Absolutely normal, all you have to do once you installed the LSD would be using proper gear oil which is 75W90/140 and also proper breaking in like do figure 8s on full lock to full lock and circles then after 100 miles have it drained and oilchanged then 500 miles later change the oil again then 1000. Maintenance would be the pain in the neck of this clutch type LSD but it’s all worth it
+Simulator Noob You will get some leakage from the diff, but should not be too much. Always best to check the fluid level afterwards. However if you are taking the axle(s) out, you might as well throw some fresh diff fluid in :) Thanks, Rick
+Simulator Noob the 1.5 is such an amazing modification. If you're looking for a bit more out of your diff, I can't recommend it enough! :) Thanks, Rick
What were you were doing at 3:25? I've never installed a diff before but looking to install a 1.5 clutch type lsd into my FRS soon and trying to find out exactly what I'm going to need for the job.
+mybikevideos Yep! We dot lucky and the diff required minimal adjustment, so just make sure to double check all of the measurements and apply/remove shims as needed :) Thanks, Rick
+Alexander Coburg More oil will also decrease the rate of change in temps, the same reasons that racing shocks/struts have external reservoirs, which is to hold more oil and decrease the chance of the oil exceeding its ideal operating temperature. Ultimately the cooling effect comes from the aluminum cover with built in cooling fins. Thanks, Rick
+RallySport Direct Rick , I'm afraid you're incorrect in the damper example also . External damper reservoirs in combination with a floating piston are used to contain the oil that is displaced by the damper shaft as it enters the main body during compression . These two examples you've presented are the ideal internet engineering answers . Commonly used and believed by most , but fundamentally wrong . I don't want to be the Internet know it all . But I feel that it needs to be corrected .
@@skiptastic1000 I must disagree with you there. One of the reasons why people run dry sump systems is also for high oil capacity to deal with the heat. More oil means more heat energy is required to raise the temperature of the oil. Assuming you use the right oil for the application, it should keep from breaking down since it's within operating parameters but sudden spikes in heat will cause premature break down of the oil. That just results in a vicious cycle of high heat breaking oil down so it doesn't lubricate as well so it gets hot due to friction. Larger capacity buffers from those situations. More oil also allows for the parts to be properly lubricated while having enough to also circulate through cooling whether it be the "reservoir" area with the fins or a radiator of sorts. Because of this, the oil will always be cooler than the moving parts and thus keeping the parts from premature failure as well.
