Quote:
Originally Posted by RDG 40
Half way through my build.
What are people using oil wise?
Anyone going shorty?
So far build is really nice, building gear diffs ive never done before so any tips for making sure shimming is correct id very much appreciate
Russ
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Obviously it's a bit early days on which oils to use, but having seen quite a few guys using 10k front and 7k rear that's what I went with for astro. I also went for 100k in the centre diff, which should be good on high-grip but I may go thinner for indoors. I've also built mine with the shorty layout, so we'll see how that goes
Whilst on the subject of diffs I ended up only using 1x of the #9888 0.5mm shims (Actually 0.2mm) on the drivecups in each diff, this is because with the pictured 2x #9888's I found the diff bound a little too much for my liking after having forced the #9937 diff pin through. I made sure to keep the internal shimming the same, so the two #9888's as pictured where used and the shimming felt spot on as such
. I would also recommend putting the bearings on both the drivecup and ring gear before you assemble the drive cups, this is because the bearings internal diameter is slightly smaller than the external diameter of the #9888's which you need to get past in order to complete the diff. Also pay close attention to the shimming of the diffs inside of the gearbox's, I found my front diff was spot on with the recommended 3x #3911's on both sides of the diff, but the rear was a little tight so I swapped one shim onto the cup side to give me a little more play - Having said that I'll be re-checking after a few packs and it may need to be swapped round again.
When building the centre diff with heavy weight diff fluid such as that which I used, make sure you pre-apply as much oil as you can onto the diff gears and into the cup before you put the two together. I filled it as I have done with every other gear diff which I've built, and quickly wondered where all the oil went after building it! The oil is so thick it doesn't penetrate into the diff cup, which is why you apply as much as you can before trying to pack it into the cup with the gears installed.
Other than the diffs the rest of the build has been pretty smooth, the only other section I found myself frustrated with was the CVD's, which if you haven't had a B44 before doesn't clearly illustrate that the longer CVD axles are meant to be installed onto the shorter rear driveshafts, where as the shorter one's are for the front.