Thread: Bang after suspension upgrade

Maybe the rear springs havnt been seated in just right.

I may be wrong but this may cause your Bang.

I got the same problem when I fitted parabolics to my SIII. In may case the front tail shaft, which I'd bought 2nd hand was a little longer than original (obviously modified to suit a different engine in the previous vehicle). The extra suspension travel as the diff came up (when both wheels hit a bump or ditch together) caused the spline in the tail shaft to bottom out and then transmit the rest of the force onto the transfer case :!: :!: [img]style_emoticons/<#EMO_DIR#>/ohmy.gif[/img] 8O OUCH!!!.

Check to see that any extra suspension travel you may have is not beyond the compression of the tail shaft.

One way to check for this is :
1 - lock the centre diff
2 - remove the front tail shaft
3 - drive over the bump.

If the BANG is gone, then the front tail shaft is the culprit.

I hope this helps.

Originally posted by Ty

It has heavy duty springs on the rear (N46 Springs and 755 shocks, if that means anything) and since i've had it back it makes a loud bang when you traverse any terrain with a sudden drop (even a speed hump). I haven't lost any articulation so i'm thinking it's not the fault of the heavy duty springs but i'm not sure.

.

I think you have that the wrong way around . They are 755 Springs and N46 shocks
I have 784 's on the back of my 90 and they are great . with N44 shocks (i think)
Also have bent rear radious arms and 2" lower shock mounts and spring relocation cones
Mine make a really load bang when they relocate into the spring hanger after they have been on full articulation and have dropped out

Ali

Is the noise in the front or rear???

If rear (which i think you mean)

Most likely ball joint / and or bushes in the rear links

Good luck...

Dave [img]style_emoticons/<#EMO_DIR#>/biggrin.gif[/img]