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.

 

[LarryJoe]

The Quaife QDH8B is 25 spline and used in all DSM AWD 5-speed and auto applications with a black axle seal, along with early 1990-1992.6 1G FWD 5-speed and auto transmissions using BLACK axle seals. The OD of the bores are 35mm for use with MB393957 and MN168441 (Koyo HR30207J = 35mm ID, 72mm OD, 18.25mm height) tapered roller bearings for FWD applications. For AWD applications it utilizes a 6207 bearing; I typically use a 6207-2RS-C3 roller bearing that is shielded. -- technical drawing of QDH8B - https://shop.quaife.co.uk/wp-content/uploads/2014/03/QDH8B.pdf

The Quaife QDH7B is 27 spline and is used in all BROWN axle seal applications, including 93-99 FWD 5-speeds and 1992.7-1999 FWD auto applications. It should be using 2x MD710663 bearings, which are Koyo LM501349-N / 57428-N with a dimension of 41.25mm ID / 72mm OD. Technical drawing of QDH7B - https://shop.quaife.co.uk/wp-content/uploads/2014/03/QDH7B.pdf

There are a couple applications that use a unique bearing race with the QDH7B, such as the 1990-1994 3000gt FWD auto which has a 74mm OD bearing race on the ring gear side and uses MD740761 on that side with a MD710663 bearing on the bellhousing side of the case with the 72mm OD bearing race. The 1995-1999 3000GT FWD auto uses MD710663 on both sides.

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@LarryJoe
In this case, it looks like Quaife screwed the pooch on its bearing bore; are both sides 40mm OD?
There is a bearing that is 40mm ID / 72mm OD but it is not 18.25mm height; it is 19.0mm height which will cause issues due to the 0.75mm offset per side creating a 0.030" setup height difference where it contacts the pinion gear, but also a 0.060" difference total height that would have to be adjusted by machining the case to take the addittional space as the factory shim is typically in the 0.029-0.036" range.
In this case I would reach out and contact Quaife directly. Their technical drawing shows the proper dimension. If you are seeing 40mm posts that means that they assembled your differential wrong. https://shop.quaife.co.uk/wp-content/uploads/2014/03/QDH7B.pdf

Thanks for the info Tim. I just took a measurement of the flange side and it's the same at 40mm. I am currently emailing quaife sales rep about this too and providing them measurements of everything. Even though the post diameter doesn't match up to the 41.3mm their pdf shows they keep asking me to measure my stock differential to see if it matches the quaife unit for some reason.

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