Hinmaton
Full Member
- Joined
- Oct 17, 2017
- Messages
- 590
A month ago I installed a new dual exhaust to fit the Duff ladder bar in my 74 trail rig (5.0L, NP435, D20, 4.10’s w/ Griz in 9”, 6.5 of combined lift and 37’s, ram assist, hydro assist drum-drum) it was supper tight but it sounds mean and doesn’t rattle.
Two weeks ago I installed the ladder bar and replaced the 3” body lift and body bushings, repaired a few mounts. Then put on a set of 38’s and limit straps in the rear for good measure.
Took it for a 30 minute test drive and noticed a new noise. A low tapping that almost sounded like a bad U Joint in the front shaft. Which was not engaged and the hubs were unlocked ( pulled over and checked). The noise was a wump wump wump noise that happened from a dead start and increased in frequency as the speed picked up than by 3rd gear it was gone. Or at least I couldn’t hear it.
When I got home I crawled underneath and couldn’t find anything loose, U Joints were old but in good shape. The only thing I could find was the exhaust, it would hit if I shook it hard enough. Maybe?
Been driving it for a week like this. There is no performance loss or vehicle surging. Just this noise at low speed under load. Although the noise picks up with speed, it’s fairly slow and deep. Not moving at the vibrations of the engine, closer to the speed of the drive shaft rotation, maybe even slower.
This afternoon I’d had enough and put some effort into trying to figure it out. Here is a video of me re-creating the noise in 1st gear with my foot hard on the brake. The higher the load the stronger the knock, you will also here the noise go away when I release the brake. I can feel it in the stick shift and the gas pedal, but much more so in the stick shift.
It won’t do it in neutral or with the clutch engaged. Only under load.
It also doesn’t seem to do it in reverse.
I engaged the hubs and put it in four high, this made it worse, particularly during low speed turning as the load increases.
Well crap I don’t know how to upload a video.....
link maybe?https://www.facebook.com/Hinmaton/videos/10216960344343692/
Well, when I stopped to disengage the hubs I noticed a massive power steering leak. I got it back to my garage and wiped and cleaned the power steering gear which was thoroughly coated, and went and grabbed a light. When I got one I noticed that fluid was sleeping out from under the sector shaft adjuster nut. ?????
Help-
Hinmaton
Sent from my iPhone using Tapatalk
Two weeks ago I installed the ladder bar and replaced the 3” body lift and body bushings, repaired a few mounts. Then put on a set of 38’s and limit straps in the rear for good measure.
Took it for a 30 minute test drive and noticed a new noise. A low tapping that almost sounded like a bad U Joint in the front shaft. Which was not engaged and the hubs were unlocked ( pulled over and checked). The noise was a wump wump wump noise that happened from a dead start and increased in frequency as the speed picked up than by 3rd gear it was gone. Or at least I couldn’t hear it.
When I got home I crawled underneath and couldn’t find anything loose, U Joints were old but in good shape. The only thing I could find was the exhaust, it would hit if I shook it hard enough. Maybe?
Been driving it for a week like this. There is no performance loss or vehicle surging. Just this noise at low speed under load. Although the noise picks up with speed, it’s fairly slow and deep. Not moving at the vibrations of the engine, closer to the speed of the drive shaft rotation, maybe even slower.
This afternoon I’d had enough and put some effort into trying to figure it out. Here is a video of me re-creating the noise in 1st gear with my foot hard on the brake. The higher the load the stronger the knock, you will also here the noise go away when I release the brake. I can feel it in the stick shift and the gas pedal, but much more so in the stick shift.
It won’t do it in neutral or with the clutch engaged. Only under load.
It also doesn’t seem to do it in reverse.
I engaged the hubs and put it in four high, this made it worse, particularly during low speed turning as the load increases.
Well crap I don’t know how to upload a video.....
link maybe?https://www.facebook.com/Hinmaton/videos/10216960344343692/
Well, when I stopped to disengage the hubs I noticed a massive power steering leak. I got it back to my garage and wiped and cleaned the power steering gear which was thoroughly coated, and went and grabbed a light. When I got one I noticed that fluid was sleeping out from under the sector shaft adjuster nut. ?????
Help-
Hinmaton
Sent from my iPhone using Tapatalk
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