SAS.....clunk...bang....

BigBluePile · Dec 4, 2013

Hello fellas, got a question on my '86 4Runner:

I recently did a SAS on my junk a couple of months ago and it turned out pretty swell. The issue I'm having is that I have this obnoxious clunk-clunk noise from the front as the weight of the vehicle shifts side to side while driving usually as I'm turning either way. I've retorqued the TRE's and cranked down the ubolts. I cannot seem to duplicate this sounds by shaking the front end side to side or bouncing the front end. Any ideas?????

Thanks!

crash2 · Dec 4, 2013

Shackle/spring bolts?

BigBluePile · Dec 4, 2013

I can try those next. It's just kinda hard to gauge how tight to get those. The front hangar is pretty easy to tell but the rear side with the shackles you can't really crank down so I usually just keep my eye on the thread count sticking out of the nut.

Also, it's a trail gear kit.....

CHOP SHOP · Dec 4, 2013

Shackles/bolts/bushings. Either the springs are moving IN the bushing or the shackles are touching something at some point.

t1h5ta3 · Dec 4, 2013

look for the shiny spot

BigBluePile · Dec 4, 2013

Maybe I'll go jump the piss out of it and see what happens.

I'll keep looking and tightening stuff up. Just wasn't sure if anyone else with a TG kit had this issue.....

DHR Darren · Dec 5, 2013

Check your shackle angle for hitting. Put grease pencil marker on the back of the shackles and on spring sides then go flex it and look for traces of grease paint transfer.

BigBluePile · Dec 5, 2013

Hmmm, ok I'll take a look at that too.

Would wheel bearings (loose preload?....I'd figured I would get other issues with this) or the knuckles make a clunk sound? Sometimes it's almost a bang! sound...it's hard to write out the descriptions....

Skid Mark · Dec 5, 2013

upper and lower nuckel bearings:beer:

stealthrunner1 · Dec 5, 2013

BigBluePile said:
Maybe I'll go jump the piss out of it and see what happens.

I'll keep looking and tightening stuff up. Just wasn't sure if anyone else with a TG kit had this issue.....

Not Me!!! Had an 86 SAS 4-Runner with trail mart stuff and didn't have any issues...:awesomework::beer:

Hook up your Go-Pro camera to view the knuckle area on each side while driving and see what you can see!!!:awesomework:

BigBluePile · Dec 5, 2013

Thats not a bad idea!

BigBluePile · Dec 5, 2013

Any other thoughts?

WA-Wheeler · Dec 5, 2013

BigBluePile said:
Any other thoughts?

Running out of parts to diag..... Driveline?

BigBluePile · Dec 5, 2013

WA-Wheeler said:
Running out of parts to diag..... Driveline?

Driveshaft isn't even attached.

I'm gonna reseat the wheel bearings and check the knuckles and look over the shackles. I had to pull up on a berm tonight and as I came off the curb back to the street there was a LOT of racket.

WA-Wheeler · Dec 6, 2013

BigBluePile said:
Driveshaft isn't even attached.

I'm gonna reseat the wheel bearings and check the knuckles and look over the shackles. I had to pull up on a berm tonight and as I came off the curb back to the street there was a LOT of racket.

:awesomework: sounds like a plan

BigBluePile · Dec 7, 2013

Well, I have no idea wtf to look for now. I redid and increased the torques on the wheel bearings and the knuckles. Checked the shackles for clearance and tightened. Tightened the steering box.