Needs some ideas here folks! Just finished (I thought) my ‘64 Cj3b restoration. All stock except the 225 V6. All new clutch parts and most everything else. Here’s the prob:
-after starting and driving all is fine: shifting, clutch engagement etc
-after about five minutes and only after the engine warms up a strong fairly loud metallic? vibration begins - not during acceleration, only when letting off the gas.
-there is also a rattle, like something bouncing around in a can.

I’ve pulled the v6 flywheel inspection cover and can’t find any bolts or anything in the bell housing.

Any ideas?? My bro says it might be the tranny input bearing… but only when hot???

Looking forward to ya’lls input😊