2G Quaife LSD Install Questions

[DashLaflash]

Hey guys I bought a quaife LSD for my 1995 Eclipse GST that I am building, and I had a few questions about installing it. The transmission is already out of the car and taken apart. The vfaq got me most of the way through the install but I'm stumped on a couple things. I already have the speed sensor gear pressed onto the quaife and the final drive gear bolts torqued to spec. The thing I'm not sure on is how to press on the bearings and space them. Reading the vfaq it seemed like he put on a spacer and then pressed on a bearing. Your supposed to use a piece of solder on the bearing race and bolt on the case to check for play and add the spacer of correct size. (factory service manual) Now what I don't get is if you need a different spacer do you have to press off the bearing, use the correct spacer, and then press the bearing back on again. I don't have a press but i can get access to one. I will have to travel though to press bearings on and off. Also there was something that looked like a spacer on top of the outer bearing race (passenger side) just sitting on top of the race. This was on the stock differential and very thin. Is this the only spacer that I have to deal with. Sorry for the long post I just want to make sure I know what I'm doing.

Some other questions about the quaife:
1. What type of gear oil to use in my trans.? (I heard redline is good what kind to get)
2. Is there a break in procedure? (No because its not a clutch type LSD???)
3. I already tried to order spacers from mitsubishi but I was unsure what I actually needed. I got a spacer set part #MR954819. Think these go inside the actual stock differential though not bearing spacers. Do I have the right part?

Well I did some more reading of the Factory Service Manual and I placed the quaife in the tranny without the bearings on it. I seems like after pressing the bearings on without spacers things will line up. The FSM only mentions a spacer on top of the passenger side bearing race (not between the bearing and the diff.)to take up any play between the differnential and the transmission case. A spacer between the bearing on the speed sensor side of the diff would increase how the final drive gear lines up. The vfaq definately says he uses one inbetween the bearing but the FSM makes no mention. Since no one has replied yet I'm going to try to get my bearings pressed on without spacers and go from there. Anyone that can help and give me a definate answer please chime in.

 

[black97spyder]

I accually skimmed through that yesterday but didn't find a list of tools. Seen a few used here and there like the 8mm rod and a special socket.

Do you rebuild the automatics?? It's starting to look like too big of a task for me

 

[twicks69]

I do rebuild the automatics as well, but I am currently taking a break until May. After May, I will be back in full-swing doing customer rebuilds.

I do rebuild the automatics as well, but I am currently taking a break until May. After May, I will be back in full-swing doing customer rebuilds.

 

[black97spyder]

Awesome!! I'm very interested!

Twicks, I sent you a pm

 

[Joethefallen23]

Not to get off topic, but I could have sworn Quaife didn't make LSDs for autos?

 

[black97spyder]

I trust what twicks is telling me, he said the F4A33 takes the same bearings as the 5 speeds, for the Quaife. So i am assuming that would mean everything will fit in just fine? The fitment SHOULD be the exact same as the the 5 speed.

 

[Joethefallen23]

I trust what twicks is telling me, he said the F4A33 takes the same bearings as the 5 speeds, for the Quaife. So i am assuming that would mean everything will fit in just fine? The fitment SHOULD be the exact same as the the 5 speed.

Interesting. So quaife fronts have no issues with a/t gearing then? Wouldn't be off considering they were designed for m/t?

 

[twicks69]

The ring gear bolts onto the diff, the speed sensor gear is the same, the only thing you need to match up are the axle spline/diameter.

 

[Joethefallen23]

The ring gear bolts onto the diff, the speed sensor gear is the same, the only thing you need to match up are the axle spline/diameter.

I see. Good info to know...thanks a bunch.

 

[black97spyder]

Twicks, my stock / original cv shafts should match up just fine shouldn't they? I haven't checked yet and figured it would be easier to just ask an experienced person.

 

[juntjoo]

when you guys say bearing "race", are you talking about that cover that comes over top of the bearings that only rests on top them, but don't fit snug, which aren't pictured anywhere here or in the vfaq writeup?

 

[twicks69]

when you guys say bearing "race", are you talking about that cover that comes over top of the bearings that only rests on top them, but don't fit snug, which aren't pictured anywhere here or in the vfaq writeup?

Correct, there is the bearing and the associated bearing race when dealing with tapered roller bearings.

 

[juntjoo]

moving post to own thread

Anyone know what the torque specs for the gear you bolt onto the quaife are, otherwise what's a good estimation?

 

[9!'clipseDOHC]

Anyone know what the torque specs for the gear you bolt onto the quaife are, otherwise what's a good estimation?

94-101 Ft. Lbs. with thread locker in an alternating tightening sequence.

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[juntjoo]

Thanks much man. What book is that?

 

[9!'clipseDOHC]

Thanks much man. What book is that?

It's the 1991 Mitsubishi Eclipse Factory Service Manual (FSM).

 

[juntjoo]

Okay. Does it also cover tranny disassembly/rebuild? How does it overall compare to a Haynes or Chiltons? My Haynes does pretty good except for missing a detail here and there and it doesn't go in the tranny much, or the differential at all

I should link to the torque specs thread I just found in here:

www.dsmtuners.com/forums/newbie-forum/382306-torque-specifications-spec-bolt-nut.html

 

[twicks69]

Okay. Does it also cover tranny disassembly/rebuild? How does it overall compare to a Haynes or Chiltons? My Haynes does pretty good except for missing a detail here and there and it doesn't go in the tranny much, or the differential at all

Use Google. "W5m33 transmission service manual".

 

[keltalon]

Awesome information in this thread. Thanks Tim for all the references

 

[ZeGaNe69]

Hi.
I have an other question about Quaife center differential. I own 91 GSX, which have a 90-92 early manual transmission. Few years ago I welded center diff and drove around happily. But now I´m more like interested to convert it back to "normal".
So far as I know that 90-92 and 92-94 center differential internals are different and are not interchangeable?? Correct?? OE codes are different.
Does Quaife QDF9B1 will fit into my transmission? Tranny code W5M33-2-WPBV (no front LSD, 3.909)
Which Quaife LSD will fit into my tranny?
Does someone have stock CD for sale?
Thank you

 

[twicks69]

Nope, you would have to change your gearset with several parts to accommodate the Quaife center differential.

Your only choice would be to get a 1990-1991.5 center differential and then either run it open 2-spider or have it machined for a 4-spider center diff upgrade.

 

[ZeGaNe69]

Thanks.

I also have two W5M31 gearboxes (one have switchable center diff lock and the second is with VCU) I am considering to swap front diff from W5M33, and a front diff´s output shaft from center diff, to W5M31 tranny. So this kind of swap should be working with my 3.909 rear axle.
Have anyone done this before and how much power W5M31 tranny can handle?
This car is my daily vehicle and I can keep it off the road for a long time.

EDIT: can not swap to W5M33 tranny`s front diff, because W5M31 gear ratio and W5M33 front diff`s combo gear ratios will suck a lot. For example: for now, driving 65mph, I have 3000rpm. Driving with W5M31 gearbox/W5M33 front diff combo, rpm`s would be more like 4000rpm.

 

[pksystems]

I'm getting ready to order bearings for my Quaife, and I just noticed something that looks wrong. Earlier in the thread it was mentioned that the oem size bearings don't fit.

I have a new QDH8B that I will be installing. Should it take 2 different bearings?

From earlier in the thread:
Bearings Used: MD706566 (roller bearing) these look to have an ID of 1.378", which matches one side of my Quaife.

The other side of the diff (Speedo gear side) looks like it needs a 1.623" ID bearing. Looking through diff bearings it looks like some of the tapered bearings are 1.614" which I assume is what I need.

Does this sound right, or did this lsd get assembled wrong?

Found this cad drawing on their site, and D3 should be the same on both sides. Anyone else get a mismatch?
The cad drawing for the FWD confirms what I suspect. AWD one side, FWD other side.

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[twicks69]

A QDH8B should be using MD706566 bearings, or KOYO 6207 deep groove bearings. A FWD DSM QDH7B uses MD710663 tapered roller bearings.

 

[godschylde777]

Hi twick, I have a question, I sourced a quaife QDH9B It already has bearings on it. How do I know it its the right one for my transmission. I don't know where to find the code for the trans. I see w5m332muzt cl9591 stamped ninto the top of it. It is a Stage 4 tre. I bought it from a friend

 

[twicks69]

QDH9B is a center differential for a 92-99 AWD transmission. It will go in to a 2g transmission without modification.