Cracking noise in the rear end

[kodanja]

Im getting a funny cracking noise when I take off in 1st and 2nd gear, at first I thought it might be the differential mounts but after inspection it doesn't look like thats it.

It goes away when I'm driving, so it seems as it may be an axel mount loosened up.

Any input would be greatly appreciated!

 

[Andrew Mace]

If you're dead sure it's not a diff. mount problem, you might want to see if the lever shock mounting bolts have loosened a bit.

 

[kodanja]

i did the shock conversion

 

[AltaKnight]

Do you think its drivetrain or suspension related?

U-Joints?
Differential mounting?
Differential internal?
Brakes dragging?
Trailing arm bushings?

My guess is the last one.

 

[kodanja]

not really sure cause i cant reproduce the sound when the car is still.

 

[Tomster]

U-Joint on it's way out?

 

[Andrew Mace]

i did the shock conversion

OK, but it still might be however/wherever your tube shocks are mounted? in addition to all the other suggestions, that is.... /bcforum/images/%%GRAEMLIN_URL%%/confused.gif

 

[kodanja]

I guess I wont know till I start ripping things apart....


thanks for the suggestions

 

[PeterK]

Well if you're getting funny cracking noises coming from your rear end and brown spatter after driving, well just maybe you're driving a little beyond your limit! LOFLMAO
/bcforum/images/%%GRAEMLIN_URL%%/banana.gif

Sorry, but I HAD to.

 

[Tinster]

How many years old are your trailing arm bushings?
DPO Pedro had one that was totally rotted out and
gone. It make kind of a loud thunk/cracking sound
on upshifts.

See page #9 of my essay on trailing arms:

https://www.scribd.com/doc/92509/TrailingArmBushingsFinal

Hope this helps a bit.

dale

 

[tomshobby]

Well if you're getting funny cracking noises coming from your rear end and brown spatter after driving, well just maybe you're driving a little beyond your limit! LOFLMAO
/bcforum/images/%%GRAEMLIN_URL%%/banana.gif

Sorry, but I HAD to.

Not gonna touch that one!!

Might be the sound of the whip cracking! /bcforum/images/%%GRAEMLIN_URL%%/jester.gif

 

[AltaKnight]

LOFLMAO

Is there a definition list somewhere?

 

[PeterK]

Typo ROFLMAO = Rolling On the Floor Laughing My Arse Off

 

[Brosky]

<div class="ubbcode-block"><div class="ubbcode-header">Quote:]Might be the sound of the whip cracking! [/QUOTE]

From the color and description above that sound ain't no whip.

I've heard them called a lot of things, but whip was never one of them.

 

[Harry_Ward]

In addition to what was already mentioned I would check for,

Broken motor or tranny mounts.

Check front wishbones where attached to frame for frame stress fractures or cracks.

 

[Brosky]

Back to the serious issue at hand.

Didn't I read somewhere that the rear shock conversions have to be retorqued every season to insure that they are tight? It might have been on the 6-Pack or VTR forum, but I did read it in the last few months.

 

[kodanja]

Check front wishbones where attached to frame for frame stress fractures or cracks.

Nope no brown liquid! /bcforum/images/%%GRAEMLIN_URL%%/angel.gif

We have a Winner,. /bcforum/images/%%GRAEMLIN_URL%%/winner1.gif
After close inspection I found a hairline stress crack on the cross member under the REAR shock mount on the frame,
Seems like a easy fix, Just gotta fire up the arc welder this weekend and run a 1 1/2" bead.

Kinda makes sence it would only misalign when there was forward pressure on it.

WHEW, I'm glad it was nothing that major! /bcforum/images/%%GRAEMLIN_URL%%/bow.gif

I'll take some pix of it when I repair it for those inquiring minds.