3S lsd and non lsd.. same???

[Wildsupra]

are the 3S lsd boxes and non lsd boxes exactly the same outer dimensions? If i trial fit and an engine with a non lsd box, will i then later be able to change to the LSD box and use exactly the same mounts i used with the non lsd??

Also are there any other drive shafts that will fit the LSD box other than standard SW20 ones? Am i right that the non lsd shafts are different to the LSD shafts??

Cheers
Matty

[TooF]

if your talking about the E series of boxes versus the S series then no they are differnt in size and significantly different in weight.

that said if your just running a 3SGE just an NA then the S series box would be spot on.. i think a few of these same out with factory LSD (later models - someone correct me) and there would be plenty of aftermarket drop in items.

[Wildsupra]

Im running a 3S-GTE and am about to put it in my AW11 MR2.

Did they bring out 3S-GE with lsd's aswell?? like in the celica's?

Matty

[TooF]

if your running the 3sgte then you'll need/want an e153 box which are signfigcantly larger and heavier then the s54? 53? boxes.

[Wildsupra]

Is E153 the code for LSD?

I've just found a box locally and wanna go check it out, is the code stamped on the box somewhere? Or is there any specific way to be sure its LSD?

Are all turbo MR2's LSD?

Cheers
Matty

[TooF]

e153 is the code for the gearbox.
some boxes have stamping some dont neither of my e51 boxes have any markings.

and no i dont believe all turbos had lsd's

the s54(53?) was the box from the n/a and the e153 is the turbo box.. significantly heavier and stronger. also runs a larger diamater diff in there too

[Joshstix]

All of the MR2 Turbo boxes, E series, have the same external dimensions and mounting points. The only differences were internals requireing different drive shaft inners for the LSD centres.

[TooF]

however S series (nonturbo) are smaller then the E series. so if your picking up a "mr2" box to size up then be aware that the turbo box is bigger,.

[Wildsupra]

cheers for all the info guys.

Does any1 know if there are more splines on the LSD boxes? or if the spline is physically bigger in diameter than non lsd?? and if so what is it or how many should the LSD have?

Cheers
Matty

[Joshstix]

All E series boxes use the same spline pattern, which is bigger than that used by the S series boxes. If you have any E series shafts such as GT4 ones then have a count and see how many teeth they have.

[TooF]

im pretty sure thats correct in terms of them all using the same number of splines.

however.. not all shafts are interchanagble.

e52/e58 both use equal length drive shafts, the longer of which (i know that sounds odd - then engine sided) is secured into the gearbox using a bracket bolted to the engine block with a big circlip in that. the unequal length shafts are held into the box using a smaller circlip cut into the spline of the shaft.

i believe you'll find that shafts that use the different mounting method are not interchanagble. ie: equal length shafts must go into an equal length shaft box and vise versa

[matt86sx]

The E153 box code should be followed by a three digit axle code. I'm told 735 and 738 refer to LSD-equipped E153's, and 734 (and maybe others) indicate an open diff. I don't think the code is stamped on the box anywhere, you'd have to check on the build plate of the car the gearbox came from.

I'm not sure if any S series boxes were ever factory LSD equipped - I have not come across any hard evidence to say if they were or not. Some ST202 Celicas (SS-III's fitted with the BEAMS 3SGE) had factory LSD, but whether these had E153 or S54 gearboxes I have never been able to positively determine.

Hope that helps,
Matt

[Wildsupra]

the beams fitted to the st202 that came with LSD is the S54, i know this for a fact as i did a conversion for a guy called Wayne over here in WA about a month ago. We had the halfcut and the build plate said S54

as for the E153, i just bought one, wreckers were asking $1500 and said it was LSD from a late model turbo SW20 halfcut they brought in (although the cut and motor were already gone so i couldnt check for a plate number, nor could i find the code on the box, They also had an S series box there which was considerably smaller in size, also from a SW20 (but N/A)
If the splines and shafts are the same size on the E153 between LSD and NON LSD (which i was told a while back they werent) how would you ever know without intalling the box and givin it some curry curry?? Surely there must be some way?


Matty

[Joshstix]

The standard factory LSD has a cros bar through the centre of it. If you pull the stubs of the axles out of the box you'll either see a nice round hole straight through or a bar going across the hole.

The standard LSD's are viscous couplings so they don't lock if you just turn one axle by hand. SSS told me that my cut had an open diff but it was a stocjk LSD.

The difference betwee the splines of the LSD and non LSD stubs in the box are not the size or number of splines but actually the length of the splined section.

[Wildsupra]

ahh i see.

well lets just say im a happy lil boi
Mine has the crossbar through it

But when i bought the box i convinced the guy at the wreckers that it was a non LSD and bargained the price down to $800 with axles HAHAHA looks like i had a win then bout time the wreckers got some of their own medicine

This conversion is startin to happen rather quickly, the 4age just fell out of the mr2.....with the help of the rattle gun.

Matty