Transmission whine

[iklukowski]

Hello, everyone. A few months ago I bought my first Samurai. It had a whine in every gear besides 4th, so I assumed it was the input shaft bearing in the Transmission. I have since rebuilt the transmission using all Nachi bearings and I also replaced the clutch, throwout bearing, pilot bearing and all U joints as well as splitting the T-case and removing the center detent ball to prep for the Twin sticks. Now after getting it all back together the noise still exists. It's coming from the front of the transmission, So i assume it's the input bearing still. Any insight on this issue would be greatly appreciated. I'm using MasterPro 80-90 fluid in the trans and t-case and i used assembly lube on all the bearings. One thing I noticed was the old input bearing I removed was a sealed bearing and the new one is unsealed. Is there a chance that fluid is perhaps not making it to the input bearing?

Thanks, guys   

[iklukowski]

Is there a possibility it could be coming from the input shaft itself? It appears pretty worn.

[Dadstoybox]

Probably a bearing or a race . Could also be a shim that's to close .

[iklukowski]

So I did replace the input shaft after this and it still made noise. I then realized that the gears were pretty worn. I replaced the cluster shaft and it got better, but it still makes some slight noise. I'm going to roll with it as it is for now and look to source another transmission for a backup.

[Dadstoybox]

Use 90 wt. marine gear grease in the transmission