Turf you do indeed have the revised version. Your brothers torque steers more because the lock up is sooner and more sudden with the original MSP LSD which is why it broke more often. The new lsd uses "centrifugal force" aka Pure Fkin Magic to lock up. Hence why you felt his car torque steer more than yours.
Transmission Swap
- Thread starter TXMazdaSpeeder
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Yea search the LSD failure thread for the posted pics of the original one that broke. You can obviously see the spring plate in the old one versus the new one. You wouldn't happen to have the pic of the one you have before you installed it? If so I can add that to the LSD failure list for info.
I was in this same boat. My MP3 tranny blew, so I wanted to swap it with a MSP tranny. My dealership swears it will not work. They tell be that the connecting axel is not the same. The MSP has a 1/4 inch size difference. The called their techs supposibly and they swear it won't work. The tranny they say will not bolt up????
I can vouch for that... I did it myself!I found that my car pulled (past tense because of the blown engine... be back on the road this spring) much more evenly though and was fantastic in corners. I loved it in autocross. The response I got was much more predictable and linear. I've raced his car and felt like the LSD did much LESS to help out.. that could be to some extent the slight power difference that existed... (about 15 horse or less difference at the time). but honestly if I was given a choice I'd take the newer diff...JDM Sam said:
Based on the comments above I wouldn't take a dime of word you guys get from any of those techs in the slightest.... I know the MSP LSD goes into the MP3 tranny... and mates up clean... I don't put a lot of faith in their comments toward how the new lsd works....
Oh i know how the new one works I looked around at different LSD designs. It resembles a posi trac lsd from the looks but i never got a good look of the internals of the revised one. For sure the revised one doesnt have the same response for locking up the diff like the spring one did. I still prefer the old spring plate version b/c I feel i could power out of a turn better with that one b/c it locked up sooner.
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It may not have necessarily been sooner... (that would be different than what I thought... but you could certainly be right!) but rather harder... I preferred the smoother lock up as less jarring to the steering and a more predictable response..JDM Sam said:
here are the pics though for you! I included one of the stock open diff so you can see the differences there too.
edit: the welds you see along the edge were something I had done... not normally there!
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- 2017 Shelby GT350
Yeah, no prob. Im pretty sure theres going to be other people involved with this too, and your more than welcome to come and check it out. A couple of techs from the mazda dealer are going to help me put it inReplica said:
It has just been over the past 2 weeks. My thread was called blown tranny ( I guess there is a few of those). I tried to search, but I wasn't getting a positive answer. I don't think I came across your thread. It's cool though, I ended up getting a good deal on a P5 tranny. No need to be sorry. I just figured someone would know something they could share with me. I hate listening to the stealerships.TurfBurn said:
I'm not super familiar with the "positrac" idea... I'm more use to the gear, viscous, clutch, and derivatives of them LSD's... the little bit of poking around I just did said that positrac is really locking the wheels together for the most part.. not actually being an LSD, and that it is often noticed during tight corners in parking lots etc... well I that isn't anything like the way the LSD I have behaves... so I don't know! they are obviously different... but how one works versus the other is definitely debatable!JDM Sam said:
The fact is it resembles an open differential. How it works the closest explanation was the posi trac thing. I only know of helical gear and clutch pack lsds. I wonder how the revised springless lsd exerts pressure to lock up the spider gears? Maybe the revised is a wannabe phantom grip?
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I haven't heard anything from my guy about the LSD from the MSP.
I'll give him a ring again and see if he can find anything out. As far as I know TFS hasn't changed anything yet.
I'll see what I can find out for sure to see if they have done anything.
I'll give him a ring again and see if he can find anything out. As far as I know TFS hasn't changed anything yet.
I'll see what I can find out for sure to see if they have done anything.
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You do realize that the "super" in the TFS differential put in the MSP actually refers to where you can buy these things as opposed to it being "super" like the man, or like Big Gay Al.
It refers to the price and it being like a "super market" bought LSD.
Kind of funny...
But TCF means it to be affordable in that respect.
It refers to the price and it being like a "super market" bought LSD.
Kind of funny...
But TCF means it to be affordable in that respect.
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man to auto is easier/simpler than auto to manual (no adding pedals and so forth)... so a little less but still a HUGE amount of money. If you have someone to do the labor for free, or do it yourself, you are probably still talking a good bit over a grand or even over 2 grand... Lot of parts involved in that!
You'd end up needing a new ECU, new center console, new linkages, any pieces that could be different due to location of the tranny components (driveshafts, motormounts, etc if the outputs on the tranny are in a different spot than on the manual)
I don't know of many people wanting to switch to an auto from a manual. but you could make a new best friend with someone near you if you have the 2.0L and want an auto and they want a manual.
You'd end up needing a new ECU, new center console, new linkages, any pieces that could be different due to location of the tranny components (driveshafts, motormounts, etc if the outputs on the tranny are in a different spot than on the manual)
I don't know of many people wanting to switch to an auto from a manual. but you could make a new best friend with someone near you if you have the 2.0L and want an auto and they want a manual.
