Soooo....my 10 bolt broke

[TK THE TRUCKER]

I was wondering what part of the rear end you guys think is broke and if its fixable ? Financially a 12 bolt, 9", etc is just not possible right now. I realize its a bit of waste of money to fix this thing but I just want to get it drive-able for now. So here's the deal, 01 WS6 M6 4.10's street slicks. I'm driving slow/normal back from Loews (5 miles) thought I heard/felt something. I get back to where I'm going which has a small parking lot and start driving around. I hear a fast noise and thought it might be a u-joint, I make my first sharp turn and snap! metal breaking, chunks of something catching gears or what not. I'm fairly certain my posi got stuck in from screwing around the day before and possibly a lack of lubrication. So now the car will move straight but as soon as I turn one way or another it feels like there's chunks of metal getting stuck in between gears (that's just what it feels like). Like I said this happened one of the last times I was going to drive it for the year and it just so happened in the parking lot where I store it in a building for the winter. So I eased into the building trying to turn as little as possible. It sat there all winter but now it's time to get it out and do something with it. What do you guys think ? As I type this I'm starting to wonder if it's just a broken axle shaft. I'm thinking out loud....it will move because the posi is still stuck in but as soon as I turn it can't differentiate so the broken ends of the axle shaft are forced to slip by each other thus causing this snapping noise/jerking situation every time it slips by. Hmmmm. If it is a axle shaft I still have a posi that's stuck in. I wasn't planning on doing the work myself but maybe I'll start taking it apart my self. Does anyone else think this could be it ? Thanks, T.K.

[TK THE TRUCKER]

myspace signature, oh boy I haven't been on here in a while lol

[35th-ANV-SS]

I would suggest jacking it up and removing the pumpkin cover and inspecting it.

[SMWS6TA]

I 2nd.....

But for now stop driving. Could have broke axle...

[Firebirdjones]

Take the cover off and inspect. You'll find chunks in the oil I'm sure if it's carrying on like that. Certainly debri has gotten between the ring and pinion as well and ruined that, they always do when I break a rear. So expect an expensive repair.

Personally I'd ditch the 4.10's, makes the rear very weak,,, only 1.5 teeth on the contact pattern at any given time due to the small diameter of the ring gear. Take the sticky tires off too. Hooking and 7.5's don't work together.
If the posi is chunked you'll be spending a fair amount of money on this thing. It will all need flushed, axles bearings inspected closely etc.... Pinion and carrier bearings will be replaced when the new ring and pinion goes in. I see this costing at least 1/3 the cost of a good 12 bolt/9 inch to repair properly. That hurts.

[SMWS6TA]

I was thinking more on this last night and FBJ posted all that I was going to say.

So I'll add this. For the cost of fixing what you have it might be a hell of a lot cheaper to go visit a junk yard, locate a rear and swap it out. It will be much cheaper than what you're looking at fixing.


I would start saving some $$ up for an investment in a solid rear end.

[Firebirdjones]

Exactly right and definately what I would do if a 12 bolt/9 inch isn't in the cards for you.

Parts to fix this one will easily total $700-$900, you can buy a used 10 bolt for 1/4th of that. Just make sure it still has stock gears and hasn't been messed with. Throw it in the car and go.

My opinion, not worth sticking that kind of money in a 7.5 to fix it. Betting it still has the torsen diff in it, which has helicoil style gear mechanisim, they don't like trash passing through them. Easy to break, not really servicable, likely junked.
New posi is $450

Gears are $150-$200, a setup kit for the gears with all pinion bearings and shims is another $150. Set of carrier bearings is another $60+

Gaskets and oil etc....and if you need an axle replaced ~$150 plus another set of axle bearings = More $$$

You're going to be close to a grand easily to repair that sucker. If you can't set it up yourself then figure another $200-$500 for labor.

Yeah, a used rearend is your best option if you're budget is tight.

[kingls1]

I have a 10bolt coming out along with a crate and box for shipping or you could come down and I could possibly meet you somewhere....pm me....

[2002ssslp]

You have the perfect combo for a blown 10 bolt rear. LS1 + M6 + 4:11 gears + street slicks + aggressive driving = Blown 10 bolt rear. You probably chipped a few teeth off the ring gear. If you don't have the money to do it right with a 9", 12 bolt or S60 go get a complete used rear and ride that while you save up your money. Don't forget to reprogram the computer. Good luck.

[pajeff02]

I will sweeten Jeff's offer - I will transport it to Mansfield which is only about 2 hours south of Rochester. Just have to go get it on our next trip to the Beaver house. I sold our 10 bolt a few years back to another site member.

[TK THE TRUCKER]

I have a 10bolt coming out along with a crate and box for shipping or you could come down and I could possibly meet you somewhere....pm me....

Thanks I'll keep you in mind as I decide what I'm going to do in the next few days. I sometimes run a load down to New Castle so I could practically swing through

[TK THE TRUCKER]

I will sweeten Jeff's offer - I will transport it to Mansfield which is only about 2 hours south of Rochester. Just have to go get it on our next trip to the Beaver house. I sold our 10 bolt a few years back to another site member.

Another generous offer, I will definitely keep you guys in mind. Thank you

[TK THE TRUCKER]

Sorry to have taken so long getting back on here. So busy at work it wasn't until yesterday I was able to get it up in the air and get the cover off. Definitely a mess. There was plenty of oil. I cannot find any damage to the ring and pinion. Most of the pieces were on the magnet on the cover except the 1 gear and 1 large piece. Here's a couple pics.... can I not post pics or something ? Not enough posts ?

[SMWS6TA]

need to upload to photobucket then capture the hrl and then post.

[35th-ANV-SS]

Used rear ends in these cars are a dime a dozen, or at least they used to be. I'm sure there are plenty still floating around.

Highly recommend getting a complete used 10 bolt and swapping it out as opposed to repairing what you have. Used rear ends go anywhere from $100 to $450 (last I checked several years ago) depending on the condition and mileage. Pretty easy swap too.

[TK THE TRUCKER]

[pajeff02]

Looks like it just fragged the Torsen posi. Usually lots more carnage when these things let go.

[kingls1]

3 bills will get a replacement to beaver springs and then to Mansfield.....replace the pinion seal and install...

[2002ssslp]

Typical Torsen shrapnel. Nothing you can do but replace it. Put in a used rear until you get the coin for a 9"

[kingls1]

Typical Torsen shrapnel. Nothing you can do but replace it. Put in a used rear until you get the coin for a 9"

3 bills will get a replacement to beaver springs and then to Mansfield.....replace the pinion seal and install...

Thanks I'll keep you in mind as I decide what I'm going to do in the next few days. I sometimes run a load down to New Castle so I could practically swing through

Forgot about this post I could sweeten the deal a tad if above were to work out. I'll post a picture later. Pm me a # if you want to talk it over.