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I need help figuring out a noise that's driving me crazy. First a little history. I have an 83 CJ7. 4.2 and T4. I bought it about 5 years ago and have been restoring it since. I have done a frame off and replaced almost everything (ujoints, bearings ball joints etc.) It has a new bds 2.5 lift and m.o.r.e shackles that give it another 1/2". When i bought it she ran and shifted pretty good. Its been 5 years but im confident i did not hear any noise in the transmission before. The only thing i did to the T4 was clean it up and changed the bearing retainer with a steel one beacuse the old aluminum one was galled. I got it all back together and running good but it has a noise. The driveshaft angle is too steep so i thought maybe that had something to do with it. I tried driving around with just the front shaft in and it still made the noise. I'm going to get a double cardan shaft for it after I figure this out. It only does it with the clutch pedal depressed and the transmission in neutral while coasting. Can also hear it between gears when shifting. I took the transmission to a reputable guy who rebuilt it with all new bearings and brass synchros. I put it back and noise is still there. It really sounds like it's coming from the transmission or in the bell housing. It also has new Luk clutch, pressure plate, throw out bearing and flywheel. After only a few miles of driving it around the block there is small metal flakes in the oil. I know some is normal but that fast? Any help is greatly appreciated. Below is YouTube video of the noise.