What have you done to your MSP today?

[neox.286]

an open diff would do exactly the same thing... allow one wheel to spin freely and the other to remain stationary when the stationary wheel encounters more resistance.
and no, an LSD doesn't send MORE torque to the one spinning slower, it just sends more than an open diff would... essentially, it attempts to balance the load, but it will never perfectly equalize it, for that you need posi... or a differential with the spider and center gears welded together, literally forcing the 2 half shafts to spin at the same speed (not to be confused with welding the ring gear to the center section like the upgraded LSD many of us have purchased to make up for mazda's engineering fubar)

POSI is impractical for FWD cars because both wheels will always spin at the same speed, making turning VERY difficult.

wait, your saying that welding the spider/center gears of the lsd together allows the lsd to send more torque to the tire with the most grip? that doesn't sound right to me, that sounds more like a welded diff (much like the drifters use) where both tires would spin at exactally the same speed....this wouldn't allow the tire with the best grip to get more torque this would force both tires to have the same amount of torque right?

sorry, I'm just really confused now


from my understanding:
limited slip = the inside tire is able to spin at a different rate while allowing both tires to recieve equal amounts of torque while cornering and allowing the tire with more traction to get all of the torque in the event of no traction in one of the tires (not to be confused with receiving more torque).....but locks both tires up (forcing them to spin at equal rates) when under a large load (i.e. accelerating in a straight line)

open diff = same as LSD except it won't lock up under large loads

welded diff (welded in the sense you are explaining) = both tires spin at the same rate no matter what

positraction = torque levels are significantly increased to the tire with the most traction



is this not accurate?
(btw, not trying to argue or say your an idiot....I'm just trying to straighten out in my head what exactally is what since I'm not a suspension guy...I'm a power guy)

 

[neox.286]

oh and neox thanks for the transmission a while back...everthing is working out perfect now ...i got a nice exedy clutch in my car now also

glad to hear it worked out for you man, not gonna lie I was kind of worried that you would find other damage in the transmission than the lsd...so glad it all turned out good! (mj)

 

[jeg0024]

i drove mine off a cliff today

 

[Wagonbacker9]

wait, your saying that welding the spider/center gears of the lsd together allows the lsd to send more torque to the tire with the most grip? that doesn't sound right to me, that sounds more like a welded diff (much like the drifters use) where both tires would spin at exactally the same speed....this wouldn't allow the tire with the best grip to get more torque this would force both tires to have the same amount of torque right?

sorry, I'm just really confused now


from my understanding:
limited slip = the inside tire is able to spin at a different rate while allowing both tires to recieve equal amounts of torque while cornering and allowing the tire with more traction to get all of the torque in the event of no traction in one of the tires (not to be confused with receiving more torque).....but locks both tires up (forcing them to spin at equal rates) when under a large load (i.e. accelerating in a straight line)
limited slip tries to send SOME torque to the wheel that is spinning slower, NEVER will send more to the wheel with more traction

open diff = same as LSD except it won't lock up under large loads
will send power wherever it can... always sends more torque to the wheel with less traction (allowing for one wheel burnouts)

welded diff (welded in the sense you are explaining) = both tires spin at the same rate no matter what
exactly

positraction = torque levels are significantly increased to the tire with the most traction
functionally the exact same as a welded diff, so no.. always equal torque to both wheels



is this not accurate?
(btw, not trying to argue or say your an idiot....I'm just trying to straighten out in my head what exactally is what since I'm not a suspension guy...I'm a power guy)

this isn't suspension, its power transmission, but not an easy concept to understand... thus my having to ask the question in the first place

this is an example of forums at their best... everyone learning from each other.

 

[neox.286]

you don't own an msp =P

 

[jeg0024]

in my dreams i do

 

[Wagonbacker9]

i drove mine off a cliff today

I hope it was a very small cliff, or you are just trying to get attention!

 

[neox.286]

this isn't suspension, its power transmission, but not an easy concept to understand... thus my having to ask the question in the first place

this is an example of forums at their best... everyone learning from each other.

anything post the transmission's gearing is suspension to me =P

lsd has to do with how you are able to corner...so it falls into suspension

ask me about the motor and how to build it and thats something I know hahahaha

appreciate the clarifications though (thumb)

 

[jeg0024]

im just bored, ill leave now

 

[Wagonbacker9]

wait, your saying that welding the spider/center gears of the lsd together allows the lsd to send more torque to the tire with the most grip? that doesn't sound right to me, that sounds more like a welded diff (much like the drifters use) where both tires would spin at exactally the same speed....this wouldn't allow the tire with the best grip to get more torque this would force both tires to have the same amount of torque right?

one more thing... welding the center/spider gears IS the technique that drifters use. that is a "welded diff" (when you're not talking about a MSP diff) and it doesn't send MORE, it just always sends equal torque to both wheels

 

[Wagonbacker9]

anything post the transmission's gearing is suspension to me =P

lsd has to do with how you are able to corner...so it falls into suspension

ask me about the motor and how to build it and thats something I know hahahaha

appreciate the clarifications though (thumb)

LSD also allows you to get better traction in a strait line.... (no one wheel burners off the line)

 

[neox.286]

one more thing... welding the center/spider gears IS the technique that drifters use. that is a "welded diff" (when you're not talking about a MSP diff) and it doesn't send MORE, it just always sends equal torque to both wheels

lmfao, sorry I find it QUITE amusing that we even have to make that clarification when on a mazda forum....(hand)

 

[Wagonbacker9]

my first few days on here reading about "welded diffs" I got super confused... trying to figure out why all these guys were putting welded diffs in their cars as daily drivers... seemed nuts to me til I figured out that they were talking about welding a different part of the diff. I had to see a pic of the welding done on ours before I really got it..

 

[SeR_Cyclops]

lol yeah it messed me up too

 

[2.0t03speed]

Hit a setback 2 nights ago. was putting on the oil pickup bolts and one of them stripped so i took it off today and checked it just for s**** and giggles and it tightened down fine. I put too much on the 1st time and it collected in one spot right below the bolt and it poped it up out of the threads. So i cleaned all the rtv off and put some new stuff on not as thick as before and everything tightened down fine. Even tho this time i was alot more careful tightening the one bolt down lol. I also cleaned the rest of the valve train parts and put the new toga valve seals in. Should be running sometime between sunday and wednesday.

 

[neox.286]

what valvetrain are you running? and where did you get the parts?

 

[2.0t03speed]

stock i took everything apart and cleaned it all. Every port,keeper,retainer,spring,tappit ect. Head looks brand new and will be re assembled saturday. I wanted everything going on this motor to be either new or to be cleaned with no oil residue on it. Luckily for my im assembling this at my friends house where i have access to any air tool i need, a dip tank along with other misc tools. But if you want aftermarket springs and what not pm me and ill tell you where to go.

 

[neox.286]

for sure, pming you now!

btw, if you don't already have it, pm forcefed if you want the engine torque specs....I think he posted a thread on here somewhere with them too

 

[2.0t03speed]

allready have all that but thanks. Those 3 sheets are what i used to check the ring gap and the end play in the crank

 

[SwirlFX]

Blew my hot pipe loose. Fixing it currently.