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i was told to come over and post this here hope i get more help then the other place i posted it. thanks again to the guy that told me to come over.

ok i have been reading a ton on rear ends because i just broke mine. when i look under the car with it in gear the left axle turns and the car does not move so i guess i broke the left outer axle. what should i do to help keep this from happening again? is this a common thing to break? will parts at the top of this page fit right in http://www.tomsdifferentials.com/catalog.asp?pg=23 should i just buy new stock ones?


help please.
 

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I have to run but if the pinion is turning are either 1/2 shaft moving? If you have posi, and it was an option in 69 then the RH diff yoke should be turning.
give me a little more info and I'll be back here tomorrow afternoon to see.
If the outer spindle is broken then it would loose as hell. I just rebuilt a diff that had a cracked posi case- dirveshaft spun all day but nothing moving in the diff.

Glad to have you over here, there's only one guy over there now with diff experience and he's here too.

PS go back there and look up my posts on diff's if they still have them there.
I'll be posting a new one here on posi's very soon.
 

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Discussion Starter #3
I have to run but if the pinion is turning are either 1/2 shaft moving? If you have posi, and it was an option in 69 then the RH diff yoke should be turning.
give me a little more info and I'll be back here tomorrow afternoon to see.
If the outer spindle is broken then it would loose as hell. I just rebuilt a diff that had a cracked posi case- dirveshaft spun all day but nothing moving in the diff.

Glad to have you over here, there's only one guy over there now with diff experience and he's here too.

PS go back there and look up my posts on diff's if they still have them there.
I'll be posting a new one here on posi's very soon.
thanks again for your help.

out for a drive with a buddy tires spinning in 1st (as every time posi) go for second big bang no go at all coasting check for 3rd nothing hhhmmm check speedo goes up with rpm ok so it is something in the back. no noise to speak of really when doing this (grinding, scraping, anything like that). tow strap back to my brothers house. next day go to pick it up with the trailer, on the trailer put it in gear let out the clutch left rear axle spins car does not go anywhere. shut car down can not turn axle by hand. posi could be worn enough that it will not drive the car on the "good" axle, could roll hard enough that would not drive that way anyway, could be more wrong, not really sure, but my guess is that for sure the outer left axle is broke since the axle turns and the wheel does not. when i raised the left rear at home the wheel turns but the axle does not.
 

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It sounds like you snapped the spindle between the bearings. Although it's not very common it does happen. Tom's may be a little expensive if you are only running on street tires. New replacement spindles (USmade of course)should hold up fine. Either Gary or me can help you out with getting it fixed.
Mike
 

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Discussion Starter #5
It sounds like you snapped the spindle between the bearings. Although it's not very common it does happen. Tom's may be a little expensive if you are only running on street tires. New replacement spindles (USmade of course)should hold up fine. Either Gary or me can help you out with getting it fixed.
Mike

so the motor that is going in it will be a bit more then stock not huge but just a nice street motor 468 with merlin o ports 9:1 and a little bit of a cam, with the tri-power. i would like to make sure that it is not going to break again anytime soon. what is the cost on a new spindle and is this something that i can do easily. i am a Chrysler ase master tech built a few pulling trucks have the fastest pt cruiser in the US Mexico and Canada.
 

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Discussion Starter #7

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i read through that when i first got here but what i would like to know is, is it possible to just take out the old one and install the new one? or does everything need to be gone through like in his post?

Well....yes. If the spindle is cracked, you have to set up a new one to install it. This requires a set-up tool like used in the post.

Your other options are to buy a rebuilt trailing arm or to have someone rebuild it.

PM GTR1999 or Tracdogg2..they may have other options.
 

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Well....yes. If the spindle is cracked, you have to set up a new one to install it. This requires a set-up tool like used in the post.

Your other options are to buy a rebuilt trailing arm or to have someone rebuild it.

PM GTR1999 or Tracedog..they may have other options.
:agree: Frankly, I would do them both. If 1 snapped, who knows what shape the other side is in.:thumbsup:
 

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At the very least you are looking at replacing the bearings, seals, and spindle.
You will have to set up the bearings and reassemble on the car. It's much easier to pull the entire arm off and rebuild it.
Mike
 

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Sorry I didn't get back to you sooner - been a bit crazy here lately.

Anyway you need to think about what you are going to do with this car. The rear spindle will need to be replaced and forget about trying to save the bearings, they will be wrecked in removal. They should be press fit so you need to get them set correct first. As you saw in my post I grind them to fit. I would rebuild them but that is what I do. Some exchanges are good some are as good as the Titanic's ice resistant hull.

As for what else could break. Pretty much anything in the rear is a target all depending on driving style. My son blew apart a custom diff I built 3 years ago with constant 200' burnouts. He was running a 370 hp engine.
There are some things you can do to the diff to beef it up. I will be doing a picture post on this as soon as I have some time. I will be building a posi this weekend for a forum buddy and will be posting that job here when done. This will add a lot more strength to the posi over the stock units and typical rebuilt ones.
 
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