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rear diff bust @ on 4am test drive

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Old Apr 18, 2010 | 05:42 AM
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Default rear diff bust @ on 4am test drive

It's 532 am tow truck just left my house. I got my elc problems fixed and got timing set right for the first time since car has been running and took it on a test drive to get gas. About 1 mile (up hill ) from my house somthing in the rear diff failed after banging threw gears. What my ? is what happened to my ( newly built ) rear end it has 373 Richmond gears.
When I put it in gear and let off cluch only one half shaft spins and I hear a clanking noise?????????http://images.ibsrv.net/ibsrv/res/sr...ilies/mad5.gif
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Old Apr 18, 2010 | 07:56 AM
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Originally Posted by RogieStone
When I put it in gear and let off cluch only one half shaft spins and I hear a clanking noise?????????
Sounds like spider gears if your doing this test with the wheels off the ground but if the wheels are on the ground you have broken a spindle.
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Old Apr 18, 2010 | 09:53 AM
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The posi is what connects the two yokes together. So to achive one wheel drive you have to shear a yoke or the posi unit internals
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Old Apr 18, 2010 | 10:35 AM
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been there, done it!!! and i drove it home..

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Old Apr 18, 2010 | 01:08 PM
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it was late when I looked under the car and I was not thinking the car was on the ground. One whole half shaft was spinning and the wheel was not moving just making noise. So I guess it has to be the spindle of the spinning half shaft. am I right

Last edited by RogieStone; Apr 18, 2010 at 01:15 PM.
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Old Apr 18, 2010 | 01:30 PM
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Yes that sounds like a broken spindle.....You'd better take the rearend out and look at it before more damage is done.
It really sucks that it broke on your first test flight
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Old Apr 19, 2010 | 10:02 PM
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I have not even put jack under my car to check out the damage, bit I am wondering if the spindle broke why did the wheel not fall off
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Old Apr 19, 2010 | 10:30 PM
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Originally Posted by RogieStone
I have not even put jack under my car to check out the damage, bit I am wondering if the spindle broke why did the wheel not fall off
Because the spindle bearings are a press fit and they are holding the spindle in place but I am a bit surprised the wheel isn't showing signs of excessive neg camber.
If your rear bearings were a "slip" fit the wheel might have come off.
There is a thread by turtlevette that is discussing press fit verses slip fit,interesting reading.
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Old Apr 19, 2010 | 10:37 PM
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Originally Posted by ...Roger...
Because the spindle bearings are a press fit and they are holding the spindle in place but I am a bit surprised the wheel isn't showing signs of excessive neg camber.
If your rear bearings were a "slip" fit the wheel might have come off.
There is a thread by turtlevette that is discussing press fit verses slip fit,interesting reading.
I guess that means I wont be able to just pull the spindle out and replace it with the control arm still on the car
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Old Apr 22, 2010 | 04:08 PM
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I spoke to the people who built my trail arms they said the spindles in our cars were only suppose to hold up to 400hp or so depending on tires, gears..... Has any one else had trouble breaking spindles with a mild 400 hp or so engine with a 5 speed?
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Old Apr 22, 2010 | 04:17 PM
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Pardon my ignorance, but if he broke a spindle then what's keep the posi clutches from locking up as he watches one halfshaft spin around?
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Old Apr 22, 2010 | 06:17 PM
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Originally Posted by RogieStone
I spoke to the people who built my trail arms they said the spindles in our cars were only suppose to hold up to 400hp or so depending on tires, gears..... Has any one else had trouble breaking spindles with a mild 400 hp or so engine with a 5 speed?
Sounds like you just got "unlucky" - or the T/A people used cheap *** Chinese spindles.

Most broken spindles reported here, show up after 500hp. But tires are a factor as well.

-W
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Old Apr 23, 2010 | 01:01 PM
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Originally Posted by Clams Canino
Sounds like you just got "unlucky" - or the T/A people used cheap *** Chinese spindles.

Most broken spindles reported here, show up after 500hp. But tires are a factor as well.

-W
I used Van Steel so Iam sure the parts are quality
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Old Apr 23, 2010 | 01:21 PM
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Originally Posted by wcsinx
Pardon my ignorance, but if he broke a spindle then what's keep the posi clutches from locking up as he watches one halfshaft spin around?
They would be slipping just as they do when you go around a turn.
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Old Apr 23, 2010 | 01:27 PM
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Originally Posted by RogieStone
I used Van Steel so Iam sure the parts are quality
Have you been under the car to see exactly where the spindle broke ? I had one last year that stripped the splines out of the yoke and it appeared to be a broken spindle.
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Old Apr 23, 2010 | 03:26 PM
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Originally Posted by ...Roger...
They would be slipping just as they do when you go around a turn.
Yeah, but I would think letting one side free-wheel like that would heat the clutch up pretty quickly, no?
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Old Apr 24, 2010 | 12:48 AM
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Prob close to 700hp here on the stock spindles. Maybe they replaced it with crap if you had it serviced.
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Old Apr 24, 2010 | 01:21 PM
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Originally Posted by enkeivette
Prob close to 700hp here on the stock spindles. Maybe they replaced it with crap if you had it serviced.
Whaddaya mean "IF" he had them serviced?
He stated that Van Steel serviced them - and that they are known for quality parts. We all reading the same thread?

-W
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Old Apr 24, 2010 | 03:44 PM
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Originally Posted by Clams Canino
Whaddaya mean "IF" he had them serviced?
He stated that Van Steel serviced them - and that they are known for quality parts. We all reading the same thread?

-W
No were not. You're reading it and I'm skimming through it. Proud of yourself?
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Old Apr 24, 2010 | 03:49 PM
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here is a pic of the damage
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