LSD for P5 ???

[defchino]

where did you getb the lsd ?, how much did you pay ? was it hard to install ??

thanks

I got the LSD from the dealer and I think it was somewhere between $650 - $700 CDN. I could be wrong though I'll dig up the work order.

I didn't do the install myself - I would think it is a bit challenging. TurfBurn did a good write up on it HERE though. The dealer installed it at the same time I had my Spec Stage III installed to save on labour.

 

[garretts77]

(hippy) (hippy) (hippy) (hippy)(hippy)

...Lucy in the Sky with Diamonds...

 

[TampaSport20]

Wow, you guys need a little education on differentials...Car comes with an open differential...differentials are essential to being able to turn corners...if both wheels were locked to the axle you would be screeching tires going 'round a corner, since both wheels would be trying to turn the same distance, when in fact the inside tire is actually traveling a shorter distance by allowing one to "slip"...the word itself describes what it does...the diff allows one wheel to travel a "different" distance than the other,or "slip"....again LSD's are just that easy..the word it self describes it's action...an LSD "Limits" the amount of "slip" between the wheels, the next step up would be a "locker" which locks both of the axles to the tranny so there is NO slip...great in a drag race, crappy in anything but a straight line though...wrote this all up in laymans terms so everybody "gets it"

 

[changedman]

the mazdaspeed comes with the lsd.... so not all proteges are open diff

 

[NJP5Guy]

I got the LSD from the dealer and I think it was somewhere between $650 - $700 CDN. I could be wrong though I'll dig up the work order.

I didn't do the install myself - I would think it is a bit challenging. TurfBurn did a good write up on it HERE though. The dealer installed it at the same time I had my Spec Stage III installed to save on labour.

smart move but you should have gone for a lightened flywheel at the same time. IMO

 

[Lil Freek]

can you get an LSD put into an auto tranny...if so where can i get 1??

Not the stock ones for the MTx.. Lentech makes a plate style LSD for the auto..

Their website has no price, but it's probably like $700 or something... I'm gonna be looking into that next fall/winter (or whenever the tranny starts to go)

 

[SkinnyJoint]

actually under normal driving both wheels are getting power its when one spins that the power then transfers solely to one wheel.

agreed. normal driving both wheels are spinning at the same speed and power is getting equally to them

 

[garretts77]

Wow, you guys need a little education on differentials...Car comes with an open differential...differentials are essential to being able to turn corners...if both wheels were locked to the axle you would be screeching tires going 'round a corner, since both wheels would be trying to turn the same distance, when in fact the inside tire is actually traveling a shorter distance by allowing one to "slip"...the word itself describes what it does...the diff allows one wheel to travel a "different" distance than the other,or "slip"....again LSD's are just that easy..the word it self describes it's action...an LSD "Limits" the amount of "slip" between the wheels, the next step up would be a "locker" which locks both of the axles to the tranny so there is NO slip...great in a drag race, crappy in anything but a straight line though...wrote this all up in laymans terms so everybody "gets it"

You are actually sort of describing the CV joint (or Constant velocity). Inside track is shorter than the outside track so the CV allows the outer wheel to turn faster in a corner so the car can actually turn.

LSD was described earlier. It limits the ammount of wheel spin on a single tire by actively transferring power to both wheels, rather than the one of least resistance.

The MSP one is a viscous type LSD which is full of a hydrolic fluid that expands and stiffens as it is heated by a spinning wheel. this transfers power to the other wheel.

A quaife diff is a gear type I think. Some sort of gear set inside the unit accomplishes the same thing.

There are also clutch type diffs that will acivate a clutch pack when the wheels lose grip...

 

[SkinnyJoint]

also a lil bit of what he is describing for fwd cars is axle lenght one is going to be shorter than the other

 

[Dimitrios]

Yep, Quaife uses an automatic, torque distribution setup: http://www.quaife.co.uk/products/atbdifferentials.htm

The Mazdaspeed unit is a Togichi-Fuji Sangyo conical gear, torque sensing (it's not a viscous unit).

TampaSport20's description is pretty accurate. Constant velocity joints are entirely different (though related):

Without CV joints, FWD would never even exist. It is basically a universal joint that allows for large angles of power and steering to be transmitted to the same wheels (fronts in this case).

It allows a wheel/axle assembly to not only rotate/provide power, but also to provide the ability to steer. Basically, no matter the angle of the axle (for all intents and purposes), it allows motion and steering.

 

[defchino]

smart move but you should have gone for a lightened flywheel at the same time. IMO

Considered it .. but I've heard negative things about drivability with a lightened flywheel - harder to launch, etc. Didn't think the benefits were worth it.

 

[NJP5Guy]

Considered it .. but I've heard negative things about drivability with a lightened flywheel - harder to launch, etc. Didn't think the benefits were worth it.

sure that might be a slight issue if you drag race but for everyday driving it'll rev much quicker when you need to get on it say going from 25-45 mph for merging etc. im sure an improved clutch would offset some of the negative for launching because i bet most sport clutches are a litle heavier than stock ones.....possibly...im just guessing. not too mention when cruising at highway speeds you more than likely would see a couple mpg improvement because of less rotational mass.

 

[NJP5Guy]

also a lil bit of what he is describing for fwd cars is axle lenght one is going to be shorter than the other

generally unless the designer of the car took the time to do it right and make the halfshafts equal lenght which is ideal. but then again who said designers are logical (uhm)

 

[TampaSport20]

also a lil bit of what he is describing for fwd cars is axle lenght one is going to be shorter than the other

lol you think that has ANYTHING to do with the speed at which the whel spins ??? take 2 dowel rods and make one shorter than the other,then stick a disk on the end of them and spin them....you think one will turn faster than the other ???? (smash)

 

[SkinnyJoint]

generally unless the designer of the car took the time to do it right and make the halfshafts equal lenght which is ideal. but then again who said designers are logical (uhm)

yea the half shafts are equal length but i dont know the word im lookin for but one side is longer than the other wich yes has nothing to do at how fast they spin