MustangWorks.com : Ford Forums - View Single Post - Major rear-end clunking after gear change

Jeff Chambers · 02-03-2006, 07:40 AM

Poor setup most likely. Friction modifier wouldn't cause what you're describing. There are a number of things that it could be; inadequate pinion bearing preload, inadequate carrier bearing preload, too much backlash, or pinion depth not correct. I'd have a qualified shop take it back apart for inspection and proper assembly.

02-03-2006, 07:40 AM	#2
Jeff Chambers Moderator Join Date: Aug 2000 Location: Milan, OH Posts: 2,699	Re: Major rear-end clunking after gear change Poor setup most likely. Friction modifier wouldn't cause what you're describing. There are a number of things that it could be; inadequate pinion bearing preload, inadequate carrier bearing preload, too much backlash, or pinion depth not correct. I'd have a qualified shop take it back apart for inspection and proper assembly. __________________ Jeff Chambers 1990 Mustang GT 10.032 Seconds / 137.5 MPH 14-time Street Warrior World Record Setter CRT Performance 2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH 2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2 "There's nothing boring about a small block automatic shifting gears at 9400 rpm!"