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Yes I did test them both ways and no sound showed up. But I tested it by rotating the pinion. Its very difficult to force the ring gear to rotate with the diff cover on, while diff is off the car. When you said this : Maybe the previous guy that "built" the diff allowed it to run too long in a...

I drained the oil today. Again the oil looked dark, and the drain plug is full of gunk. But how can this be when the oil and gears only has 4 hours runtime ? The only conclusion I can come up with is the gears are grinding each other. Wasted my money on Amsoil 75W-110 thrice.. So i decide to...

The speed is never more 50kmh at maximum and i tried my best to get it between 20 to 13kmh up to near stop to replicate that sound only and isolate the noise from exhaust, turbo, engine and tyre noise. It is tied to wheel rotations, as most of the road has no major bumps, plus this is a 4.56...

@Piratetip here is a video. from the website onallcylinders , this is what I would describe as the closest symptom I dont know why but the camera could not capture the sound properly. I was only able to spot the sound right after 13:10 and 13:45 mark, pay attention when I decelerate. sounds...

My prop shaft was rebuilt and rebalanced. It seems smooth at the joints and no vibrations felt under me. As for the pinion preload, i was getting about 8 in lb constant turning. The breakaway was over the scale of the wrench, but then again the upper limit of that wrench is about 25 in lb only...

I did some investigation today. I know for sure that the noise is happening when the rear wheels are on the ground and moving forward, even though the speed is very low (15 to 10kmh) and transmission is D (engine braking) as well as N (no engine braking) . So naturally I suspect the ring and...

Thanks for the heads up. There is one more in Rock Auto. Is this ok ? or maybe I need to buy from somewhere else. Edit, if I find that it is R & P, i might as well just buy OEM. I dont want waste my time again. Planning to find a way to put a drill to turn the side flange to mimic the...

On this coming weekend, I will detach the prop shaft and lift one wheel up, and spin that lifted wheel as fast as i can. this would forcefully turn the ring and pinion, like decelerating, lets see if that same sound is there, i will get it recorded. Also gonna try with the prop shaft attached...

The clunk is not constant, its only on lower speed decel. Nothing on accel at all. I did not really test the diff much in opposite direction. I am stumped as to why it only happens on decel. I mean afaik if its u joint , cv axle or wheel bearings its supposed to make noise all the time it...

After struggling the whole day installing the diff, i took it for a test drive. Looks like all my work is for nothing. The knocking sound (kluk kluk kluk) on decel is still there. The sound is loudest at lower speeds at 45 to 15kmh, worse when engine braking is in effect. I was thinking of...

Thanks piratetip. I brought the diff home already and preparing to install tomorrow, its like 5 weeks already. I have not changed the side gear flange clips. I tried using a normal circlip plier but it seems its not opening large enough to open up the clip. Is there another tool to remove this...

Received my shims. I proceed to put the thickest shim of 2.79mm on the left, and 3mm on the right, which gives me a reasonable preload, that is tighter by 0.09mm than the original shim stack. I measured backlash on 18 tooth randomly. The tightest is 0.124mm and loosest is 0.175mm The average is...

I just tried to get the best preload and backlash. Results :, I need to buy more shims. It seems a total shim thickness of 5.73 , 5.76 and 5.79 is simply not enough preload. 5.82 is just ok, I wager that 5,85mm is the sweet spot, but at 5.82, the shim is very hard to knock in already. With a...

I have not disassemble the center part, but plan to have a look. So far it looks ok, the most I would tighten up is 0.1mm on each side. It is an open diff 4 pinion setup with 2 side gears. The spider gears look really good. I just got news the carrier shims I ordered arrived at my home. I can...

While waiting for the shims, i decide to inspect the spider gears: There is a little up to down slop on the side gears, and I can slide the side shims . However, I do not detect any backlash on the side gears, even a tiny movement on one side gear moves the opposite side gear, even with one...

Remember when I said I was gonna leave pinion preload as it was? I lied. I figured since I need to wait for the shims to arrive and thats about 8 to 10 days away, I might as well work on the pinion preload again. I removed the carrier, and pinion, and resanded the spacer the 4th time, and got a...

Piratetip, I followed your method of sanding the weir spacer back end on a granite table and I got the preload down. I had to do it three times, but I finally got it feeling tight enough, it is on the lower end of the scale, probably 4in.lb only, The starting torque to get it moving is quite...

Guess I would have to sand the spacer then. For the carrier preload and backlash, I plan to buy at least 3 combinations of which I will pre calculate based on the current carrier shims and make an educated estimate. No wonder the shop guys here will simply not get this right, they are too damn...

Piratetip, the problem is the staked nut for sure. I have managed to fix the thread front the best I can and the new standard nut I used for setup only rolls on easily without snagging. I also very lightly oiled the bearings, so now it does not catch anymore. I only oiled them once, I never...

Kousouku Yuen Vol 80. This magazine is quite cheap. you can buy from Mooneyes Japan.