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Old 13th October 2013, 08:22 PM
Spikehaus Spikehaus is offline
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Join Date: Aug 2008
Location: Plymouth, Devon
Posts: 483
Default Sierra LSD Diff 3:62:1 Problem

I am currently running a Ford Sierra LSD Diff from a XR4x4 2.8i

The Ratio is 3:62:1

Final Drive Code "U" on the engine plate

I noticed during my build, that when manually pushing the car around the garage, it appeared to have some resistance that required 2 people to push it. This was in a straight line either backwards or forwards. I am note sure if this happens when turning? I also thick that it does not occur all of the time?

The IVA inspect also commented on it during the roller brake test. He was not overly concerned, however he said it may need to be changed if I get bad fuel economy.

It still seems to be occurring, an noticed when free wheeling to a stop.

I had hoped to change the oil when installing, but the Allen head bolt was damaged by the previous owner.

Any ideas?? I was thinking about injecting a small amount of diff oil through the air breather opening.

Any help appreciated.
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