Grinding or rubbing
 

Im unfortunately suffering a terrible noise after doing my cd009 swap with the PBM diff and subframe risers. Ive checked hub bearings, axles(which are the 1000hp dss kit that includes the new hubs), driveshaft and anything else I think would cause problems. Its more so when I’m cruising to a stop or when i simply take my foot off the accelerator even without braking. Then i came across the whole pinion angle thing which i don’t know much about and didn’t consider it when mounting the trans. Lastly i notice very tight clearance above the diff from the trunk floor I’m not sure how much vibration is present due to the solid bushings but could that be the root of the problem. Vibration goes away when accelerating. I tried to get the best of both worlds with a strong transmission and strong axles with supporting mods to accomplish a good setup but im starting to realize there are limitations with this chassis
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Is it coming from the diff on decel with engine braking? Does the noise change when you coast in neutral?

Yes i get it only on decel with engine braking i haven’t tried coasting long in neutral yet the noise is bad i try to avoid driving it


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Was the diff known to be working properly before you acquired it?

Yes its the original diff but i did some more inspections i noticed the axle on the passenger side is not flush like the one on the driver sidehttps://uploads.tapatalk-cdn.com/202...8a359ef018.png
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Circlip should just pop into the detent. Tap it with a plastic mallet or a dead-blow.

Or how I've done it is to just pull it out a little more and give it a good shove by hand.

Imma inspect the splines then retry again


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I don't think it contributes to the noise but I'm wrong plenty. It's a good catch either way.

Just an update I believe my diff is bad I took pictures with the vehicle rested down and discovered this! This is the same axle that seemed to have “popped” out. The axle shaft seals are new so what I believe is the diff/subframe risers are doing its job but a little too much. The right axle seems to keep coming out and putting stress on the bearing since the axles are sort of angled up now. Just a uneducated guess what you think? Because this only started after the risers were installedhttps://uploads.tapatalk-cdn.com/202...ef9496d753.jpg


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