Whoops, forgot to follow up on this. Here they are.
Posted 3-3-09I have completed the Quaife install and I did it all the RIGHT way, but it was quite a process. In fact, I just got it in the car this past weekend. I was waiting to get the axles all figured out and have the completed pics ready to share, but since you asked, I'll spill the beans early.
First of all, no one knows anything about measuring bearing preload. Everyone I talked to, including people who install Quaife LSDs, either had no idea what I was talking about, or knew about it but said something to the effect of, "oh yeah, we always skip that part" or "oh, I just do it by hand".
This whole situation really concerned me for two reasons. One, it went against the way I do things which as most of you guys know, is by the book and the best I possibly can. Second, I didn't want to burn up a $1400 diff! So after getting to this point in the build, I determined where the shims were located and how to replace them to measure the preload, as well as what order to do it in (that was a little confusing in the manual). Also, I had to purchase a 0-30 in/lb range torque wrench since nothing else would measure accurately down that low. That took a while to find.
Finally I got it, and also bought a press to properly install the new bearings (I did replace both sides). First I did the initial step of measuring the preload which you do with only the output shaft. Once that number was determined, I did it with the diff and output shaft installed.
With the output shaft only, it measured just barely on the high side for used bearings which I felt okay with. Then I took the case back apart and installed the diff. As soon as I bolted the case back up I knew that it was too tight since it was hard to turn the output shaft by hand. I measured it and sure enough, it was way out of spec (too tight). This was a little frustrating because I would have to order shims from Toyota, but at the same time I felt validated about making sure I checked the preload.
The next weekend I got the shims in, and I had decided to go just one step down on the output shaft shim as well to get it into spec. That part went fine. Then I started going down with the differential shims, one at a time. I took that case apart and put it back together like 6 times that day!!!! But finally I got it perfect, right under the top of the range. I had ordered several sizes of shims to make sure I got the one I needed (I ended up going down about 3 sizes. There are like 20 sizes in total).
It's been a pretty long process but the experience I've gained (and the tools I've bought!) will be invaluable for future installs
Pressing the bearings on:
Preparing to bolt the case on to measure preload:
This was the catalyst that inspired us to put the E153/Quaife in. This disc was a cheap one made by a local clutch shop, it was only supposed to be in there for a couple weeks while we installed the Quaife. We didn't even start working on it until about 4 months later when it blew
The broken springs got behind the flywheel and chewed up the rear main seal housing. It was okay though thankfully.
Putting the E153 together for the LAST TIME!
Bolting it up. It's a tight fit in the Celica.
Why yes, that is a Quaife!
Posted 4-10-09Little update, finally got the axles figured out. Got a sweet setup that works perfectly using off-the-shelf parts.
The car is just amazing with all the traction. Next up is tires, springs/struts, exhaust and boost controller.
-Doc
.. Seems to be a really nice setup