1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Ive got bad u-joints

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Old 04-21-04, 12:21 PM
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Unhappy Ive got bad u-joints

Okay, I took my car to the tranny shop today. They said it has bad ujoints. Since they are not repacable, i have to buy a whole new drive shaft.

I found one at mazdatrix for $250 with replaceable ujoints.

Is there anywhere else to get a drive shaft cheaper?
Old 04-21-04, 12:39 PM
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you have a pm
Old 04-21-04, 03:55 PM
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Go to the junkyard......i paid $75 dollars for mine and they arte easy as hell to replace......took me 30 mins.....most of that was squeezing my fat *** under the car and getting back up!!!
Old 04-21-04, 03:58 PM
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wow 30mins. I was gonna have the tranny shop do it but.......

Does fluid come out when you take the drive shaft out?
Old 04-21-04, 04:18 PM
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not if you do it fast enough
Old 04-21-04, 04:19 PM
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but it does come out?

Of the tranny or the diff?
Old 04-21-04, 06:01 PM
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transmission fluid comes out of the tailshaft of the transmission. if you have a spare yolk, it would be highly advisable to stck it in as you pull your driveshaft out. if not, it would be a start to replacing your transmission fluid. the drriveshaft bolts to the differentil via 4 14mm bolts and 4 12mm nuts. no fluid comes out of the differential when you take the driveshaft off.
Old 04-21-04, 06:04 PM
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Originally posted by mazdaverx713b
transmission fluid comes out of the tailshaft of the transmission. if you have a spare yolk, it would be highly advisable to stck it in as you pull your driveshaft out. if not, it would be a start to replacing your transmission fluid. the drriveshaft bolts to the differentil via 4 14mm bolts and 4 12mm nuts. no fluid comes out of the differential when you take the driveshaft off.

or you can jack the car up by just the rear end, get under there, undo the bolts, slide it out, slide the new one in, and redo the bolts. with the rear of the car in the air, the tranny fluid moves to the front. when i did it i didnt have any come out.
Old 04-21-04, 06:47 PM
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alright thanks, Im gonna change the fluid any way so.....
Old 04-21-04, 06:49 PM
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that is a great idea, onepointone! it works decently well. i have used that technique on a pickup i was doing some u-joints on.
Old 04-21-04, 06:56 PM
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yeah, it is a good idea.
Old 04-21-04, 08:10 PM
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Originally posted by onepointone
or you can jack the car up by just the rear end, get under there, undo the bolts, slide it out, slide the new one in, and redo the bolts. with the rear of the car in the air, the tranny fluid moves to the front. when i did it i didnt have any come out.
Thats how I did it
Old 04-21-04, 08:18 PM
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No fluid involved. Done drive shaft replacement many times in driveway. Sometimes if you just replace U joints balancing the drive shaft seems to be imposible. Vibration is obvious. Can't figure this one out.
Changing the trans fluid to Amsiol synthetic is always a good move.
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