Helping JimT out with an inframe ...

[SquareOne]

(04-09-2022 )JimT Wrote:  ...Despite spending a good amount of time cleaning and painting parts much of the paint has peeled off, in large pathces. Specifically anything that was painted with Corroseal then Por15. ....

Whats odd, is I experienced the same thing when I painted and installed the new damper. I tried the Corroseal on a few different items and found it seemed to work great on the lightly to mildly rusted parts (not on the truck, just stuff around the house.... some fab projects I had been working on which were still bare metal, my tubing bender, couple scrap pieces, etc..), but it didn't do well on clean metal. When I tried it on the damper, it turned the correct color the instructions said it would and appeared to have good adhesion. Once I hit it with the air hose while prepping for the POR-15, it came off in large patches. Almost as it had no adhesion whatsoever. The other items I used the Corroseal on are still like the day I put it on....but again, they were light-mild rusted.

(04-09-2022 )JimT Wrote:  Outside of the engine, my driveline issue still hasn't magically gone away on its own... dang... Could be trans or diff or something else causing some speed related vibration, notably around 50-55mph and 70 and up (not that I exceed 62 very often). I'm currently planning a big overhaul where I'm gonna change my rear end gears to a different ratio, swap out the tranny (the current 13 speed makes some noises I don't like, probably needs a rebuild, might go with an 18 speed instead), replace the clutch while I'm at it (seems to work fine except for the lack of a clutch brake for the entire 4 years I've owned the truck) and everything else in that area while it's torn down....

For a min, I thought you were talking about my truck lol. I've been chasing a damn DL vibration for a quarter million miles. I've taken measurements on DL angle and ride height, changed the driveshaft, all U-joints, damper, torque rods, etc.....basically anything that could contribute to it. Even ran the trans up to speed while the driveshaft was disconnected to eliminate the rest of the drivetrain.

Some of that vibration remained even with the rest of the DL removed from the equation. I'm thinking at this point maybe it's the input shaft bearing or possibly the pilot bearing? Hell maybe the clutch has some oddball wear pattern (although if I lightly rest my foot on the pedal, there isn't anything out of the ordinary coming through). It comes and goes and although it's faint and few and far in between occurrences, it needs to be addressed. I'm nearing the 700k mark, and Rawze, you may not remember, but when we viewed the initial history of this my truck 3yrs ago, the first 350k miles were rough for it to say the least.