HELP, after rear end swap
HELP, after rear end swap Ok so this is the sumarry of my story
I hit a curb some months ago on the passanger side rear wheel, everything seemed fine when it happened, 2 days later I got what sounds like a grind on the back, not sure where it was coming from I ignored it and drove the car like that, car would then only make the "grinding" noise after I stepped on it all the way or on heavy load on light car driving everything is fine
2 days ago I got a diff from a member here and finished today swaping it out, and went from my stock 2.73s to this 3.23 rear end, and used my old 2.73 axels on the 3.23 rear, but everything back together everything seemed fine just that my brakes are really loose, im thinking something with the inside drum on the disc rotor??? well have to inspect
Anyways, drove the car and stepeed on it not full throttle but enough to see if the "grinding" sound was gone, seems its still their???? I am lost right here what could I have dont wrong?
put synthetic valvoline diff oil and new gasket, im lost not sure its its the rear or the exahust or what it can be but it definately sound somewhere in the back??
thanks for any support
I hit a curb some months ago on the passanger side rear wheel, everything seemed fine when it happened, 2 days later I got what sounds like a grind on the back, not sure where it was coming from I ignored it and drove the car like that, car would then only make the "grinding" noise after I stepped on it all the way or on heavy load on light car driving everything is fine
2 days ago I got a diff from a member here and finished today swaping it out, and went from my stock 2.73s to this 3.23 rear end, and used my old 2.73 axels on the 3.23 rear, but everything back together everything seemed fine just that my brakes are really loose, im thinking something with the inside drum on the disc rotor??? well have to inspect
Anyways, drove the car and stepeed on it not full throttle but enough to see if the "grinding" sound was gone, seems its still their???? I am lost right here what could I have dont wrong?
put synthetic valvoline diff oil and new gasket, im lost not sure its its the rear or the exahust or what it can be but it definately sound somewhere in the back??
thanks for any support
Jack the car up and put it on stands, put it in nuetral and remove the driveshaft. Then spin the rear end over by hand listening for the noise. You are fine re-using the axles as they are the same for these cars. You need to have a look at the wheel bearings and make sure they are good, look at the axles as well, right where they ride on the bearings. If it were me I would remove the brakes from both sides, spin it, and if it all sounds good, put the brakes back on one side at a time, checking for any rubbing. Hope thus helps. And this is all based on the idea that the rear end you put in was in good shape that you got hopefully from someone you trusted.
Last edited by RARON455; Dec 31, 2011 at 08:25 AM.
yeah im hoping its good, could the axels be grinding on something like the backplate, if I remember correctly when I swaped it I tested it out by hand to make sure it was fine and I couldn't hear any noise, so im kinda skeptical what it can be, what else could it be? driveshaft misaligned? not sure what it can be , sorry for the noobness but where are the wheel bearings
so you replaced the dif and reused the axles? this is suspect. i'm assuing if you hit a curb with the passenger side wheel you were sliding? so now we have a lateral impact. if you just monster trucked a curb...probably still an axle problem, esp since swapping all that didn't repair the issue. and it's hard to say what's what with something like that because an error during reassembly may be responsible for anything other than the grinding noise at this point.
i'd do as suggested and remove the driveshaft and spin the dif. although, if you only hear something under a load, this may not solve anything. a loose axle prob has something to do with the backing plate or c clip....
i'd do as suggested and remove the driveshaft and spin the dif. although, if you only hear something under a load, this may not solve anything. a loose axle prob has something to do with the backing plate or c clip....
You installed the axles with the c-clips right? You pulled the main pin from the carrier,slid the axles in then installed the clips, pulled them back,and reinstalled the pin and bolt correct? The axles will move in and out just a very little bit when all back together. The wheel bearings are inside the axle tubes, remove the axleshaft and you will see the rollers of the bearings in the tube, make sure they dont look burned,or scored(chewed up), make sure all the rollers are there, and not real loose. The axleshaft rides on the bearing, look for wear on the shaft where it rides on the bearings. With the rear of the car jacked up, grab a wheel and lift up, if it moves up and down easily the bearings,and or shaft could be worn
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Update: car in stands and put it in drive and accelerated and no sounds so im thinking it could something exhaust related sound seems to come under the seat? Driver seat or around the tranny area just replaced a broken tranny mount so that was part of the issue
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