Cheap front LSD's
- Thread starter Georonimo
- Start date
Wolf_Tm250
New member
CMS-GT4":apku5v67 said:
YES !
If you make it, I could be in...
even if I think a spinning wheel is now saving my gearbox from exploding...
alltrac101
Member
Just a thought, on my radio control race car a front LSD made it push, I had to take it out....It makes more sense for acceleration grip....
On a side note the dyno jet readings thru out the acceleration the REAR gets more than 50% (one reading showed 59) of the power to the ground....At the drag strip, after the run the rears were chunking. I think for some reason the carbon shaft amplifies the rear power
Pat
On a side note the dyno jet readings thru out the acceleration the REAR gets more than 50% (one reading showed 59) of the power to the ground....At the drag strip, after the run the rears were chunking. I think for some reason the carbon shaft amplifies the rear power
Pat
CMS-GT4
Active member
alltrac101":3dl9jczn said:
What kind of diff was it? Clutch, or helical?
I am have an interesting issue of grassroots motor sports that compares handling characteristics on front lsds that I need to dig up.
The problem for us seems to be on corner exit. I remember some racers from back in the yahoo lists described the fastest way around the course in these cars was slow in, fast out. So if we could tune the suspension to help maintain the current corner entry push, if the new lsd increases the effect, the corner exit speed should hopefully be further improved to get faster lap times.
Fensport has had lots of success with their TRD front lsd for their Y2K gtfour and TTA has been winning rallies in their Gtfour powered corolla with their clutch front lsd and active center diff.
alltrac101":3dl9jczn said:
Do you think this could have any long term affects on the center diff? Do you think this is the result of less energy lost with a single piece rather than a multi piece driveshaft or something else?
alltrac101
Member
Josh, its a clutch type, but when I'm on the gas after the apex it pushes, which means the torsen would do the same since it senses torque load.
>Do you think this could have any long term affects on the center diff?
No, the center diff is mechanical (off the top of my head, I think it has 5 spider gears) while the control coupling takes power from the center diff. it acts as a lsd (its a clutch type), between the center & rear output
What are you guys looking for
1) a front LSD only or
2) a front & center LSD
if there is a center torsen LSD we could take the viscous coupling out & put a spool...that would be the trick while saving a lot of weight
Pat
>Do you think this could have any long term affects on the center diff?
No, the center diff is mechanical (off the top of my head, I think it has 5 spider gears) while the control coupling takes power from the center diff. it acts as a lsd (its a clutch type), between the center & rear output
What are you guys looking for
1) a front LSD only or
2) a front & center LSD
if there is a center torsen LSD we could take the viscous coupling out & put a spool...that would be the trick while saving a lot of weight
Pat
Alrighty, the ball is rolling. Here is the reply I received from Stephen at M-Factory:
That said, does anyone have a few clear/hi res pictures of one of these differential assemblies? I'm assuming they are interchangeable between the different generations.
Please post a link or email them to me at Georonimo at gmail dot com
Thanks!
Hello Jorge,
thank you for your email. Do you have any images of the oem differential? We do actually have an LSD for the 3S-GTE, but this is for the MR2, so not sure if this will work with the AWD.
if you could see if you can find some decent images for me so that I can see what we're up against here
Thanks,
Stephen
That said, does anyone have a few clear/hi res pictures of one of these differential assemblies? I'm assuming they are interchangeable between the different generations.
Please post a link or email them to me at Georonimo at gmail dot com
Thanks!
CMS-GT4
Active member
The only pics I have.
http://gtfour.supras.org.nz/differential.htm
http://gtfour.supras.org.nz/differential.htm
Here is the reply I received earlier today:
Based on the link CMS-GT4 posted, I'm assuming the diffs are the same between the generations with the exception of the extra components for the diff lock mechanism or the Viscous coupler. I don't know very much about the TTE/TRD diffs mentioned but I'm under the impression that they were limited production parts made many moons ago and no longer available new. Any more information/input would be appreciated and very helpful in getting this unit into production.
If you guys know of any other parties that may be interested in this or very familiar with the workings of our transmissions please point them in this direction so their voice can be heard.
Thanks again!
Based on the link CMS-GT4 posted, I'm assuming the diffs are the same between the generations with the exception of the extra components for the diff lock mechanism or the Viscous coupler. I don't know very much about the TTE/TRD diffs mentioned but I'm under the impression that they were limited production parts made many moons ago and no longer available new. Any more information/input would be appreciated and very helpful in getting this unit into production.
If you guys know of any other parties that may be interested in this or very familiar with the workings of our transmissions please point them in this direction so their voice can be heard.
Thanks again!
Frankencar
New member
The gearbox that is slowly making its way into my rallycar was built by the guy who used to build them for the factory team when they ran Paris-Dakar. He said with enough effort and money things could be machined and massaged enough to fit an mr2 lsd in place of the open front diff. Since I pretty much ran outta budget, I kept the open diff. I can try to get particulars on whatall needs doing from the guy, if there's interest.
Frankencar
New member
...and may continue to be. I asked Robert what the specifics were on this option and he said vaguely that it would involve machining so much of the case out that he worried about weakening it. I guess we're back to hoping this outfit makes a drop in setup.
More correspondence with Stephan at M-Factory
His reply was:
That said, I'm currently looking to get my hands on an ST205 diff assembly (assuming this is the best starting point) to send to M-factory for measurements. Once that's in hand we can get the ball rolling. Does anyone have one they wish to loan out for a good cause or sell for a reasonable price?
His reply was:
That said, I'm currently looking to get my hands on an ST205 diff assembly (assuming this is the best starting point) to send to M-factory for measurements. Once that's in hand we can get the ball rolling. Does anyone have one they wish to loan out for a good cause or sell for a reasonable price?
therieldeal
New member
good luck with the GB jorge, i can say for sure that mfactory makes some excellent products. i still have one of the prototype diffs kicking around from the group buy i ran, if anyone would like some close up pictures of their work.
i recently converted my escort to an E153 trans from a camry... if only the timing were better i most definitely would have put an MFactory diff in there. they must be a recent addition to their catalog, because they didnt have them available back in october when i purchased my Quaife. unfortunately my timeline was too short to be able to organize another group buy at that time
i recently converted my escort to an E153 trans from a camry... if only the timing were better i most definitely would have put an MFactory diff in there. they must be a recent addition to their catalog, because they didnt have them available back in october when i purchased my Quaife. unfortunately my timeline was too short to be able to organize another group buy at that time