Hello,

i've rebuilt my 9" ford rearend, and put a trac-loc in it with a 3.25 gearing.

Now, i test drove the car, and the trac-loc makes all kinds of noises. (when NOT going in a straight line, so when cornering)
To describe them, i'd say they sound like disk-brakes when braking with worn-out pads: metal-to-metal, so to say.

Also, there is a bit rotational play in the right axle. You can turn the wheel a bit front to rear and rear to front, before it takes the other wheel with it.

I only tested it with town cruise speeds, no highway yet.

When cornering slowly, as sayd, i hear the noises.
When i drive backwards (to park the car) it "clunks".
It does this also when i make a "S" turn, so from left to right, and then directly from right to left, for instance on a roundabout.


Does these sounds and descriptions sound familiar, or did i do something wrong with the build?
Is it possible that these sounds are from the clutches, needing to run-in?
I used a standard gear oil.
i bought the centersection with the trac-loc as it is now, being new. (there were some styropur packaging ***** in the gears, and marking dye on the tooth, so i can safely say that it is a new one.)


i go on a long trip in about 5 days from now, so i need to know if it's allright.

Any help highly appreciated, thank you.









edit:

I poured the neat little bottle of skunk smelly friction modifier (CM-19546-A1, the green stuff...)
I don't know what little gozmo's and wizard's of Oz created the friction modifier, but after 100 feet no clunk or scatter anymore...
I made a small testdrive of a few miles at various speeds and bends: As smooth as a baby's butt...
I'm stunned..

 

Did you add the friction modifier in with the gear lube? You need it to prevent excessive clutch grab, which can cause the chatter that you describe.