I have been watching quite a few videos with Tsuchyia (drift king) where he talks about the importance of having an LSD for "touge" or road racing with a FF car. My question is whether the Integra Type R's LSD in its transmission is sufficient for competition use. Is it reliable? I did quite a bit of diving into the "Search" button and found just for sale ad's for the LSD Type R trannies. For those of you who run the stock LSD on the Type R tranny I'd really like your input. Thanks!

 

Yep, works fine. Not the best, but better than a number of the other offerings available. And next time you search, make sure to hit "Archives" on the right, and specify RR/Autox forum There's lots of LSD discussion in there.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Stinkycheezmonky &raquo;</TD></TR><TR><TD CLASS="quote">Yep, works fine. Not the best, but better than a number of the other offerings available. And next time you search, make sure to hit "Archives" on the right, and specify RR/Autox forum There's lots of LSD discussion in there.</TD></TR></TABLE>
Man...I'm tired...I actually forgot to hit the archive section first. Insomnia is a bitch. I'll go look in there also. If anyone has any advice or whatnot....don't hesitate.

 

Ok...so...I have a new kind of question that wasn't answered in the archived sections. What kind of LSD is more applicable for road racing/auto-x? I have heard of, read about, seen on Gran Turismo (the game...der) the different kinds of LSD's. What kind of LSD is in the Type R and what kind is most commonly used on FF cars?
edit: Found this....
The clutch type LSD responds to driveshaft torque. The more driveshaft input torque present, the harder the clutches are pressed together, and thus the more closely the drive wheels are coupled to each other.

With no / little input torque (trailing throttle / gearbox in neutral / main clutch depressed) the drive wheels are still coupled somewhat as the clutches are always in contact to some degree, producing friction. The amount of preload (hence static coupling) on the clutches is determined by the general condition (wear) of the clutches and by how tightly they are shimmed.

Broadly speaking, there are three input torque states - load, no load, & over run. Under load, as previously stated, the coupling is proportional to the input torque. With no load, the coupling is reduced to the static coupling. The behaviour on over run (particularly sudden throttle release) determines whether the LSD is 1 way, 1.5 way, or 2 way.

If there is no additional coupling on over run, the LSD is 1 way. This is a safer LSD, as soon as the driver lifts the throttle, the LSD unlocks and behaves somewhat like a conventional open diff. This is also the best for FWD cars, as it allows the car to turn in on throttle release, instead of ploughing forward. [1]

If the LSD increases coupling in the same way regardless of whether the input torque is forwards or reverse, it is a 2 way diff. Some drifters prefer this type as the LSD behaves the same regardless of their erratic throttle input, and lets them keep the wheels spinning all the way through a corner. An inexperienced driver can easily spin the car when using a 2 way LSD if they lift the throttle suddenly, expecting the car to settle like a conventional open diff.

If the LSD behaves somewhere in between these two extremes, it is a 1.5 way diff, which is a compromise between sportiness and safety. Generally a 1.5 way creates a stronger lock under acceleration than deceleration.

Clutch LSDs are noisy, clunky and expensive, which makes them unlikely to be installed by the factory on a passenger car these days. However their response speed and coupling strength is the best of the commonly available LSDs. They are also the only commonly available LSD able to stand up to extreme motorsport abuse.

 

probably doesnt have to be stated but fresh clutch packs in the diff will make a world of difference, and running the proper additive in your oil will actually make a bit of difference. The first day with new clutches in my truck diff was hectice. The tires would squeal around pretty much every corner and the thing acted like a locked axel. Took about a week for them to settle to a good place