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Old 02-24-2012, 12:34 PM   #1
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Default MSM axles

A pair of Mazdaspeed Miata half shafts. $300 obo. Email me at gibscreen_23 at yahoo dot com.
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Old 02-24-2012, 12:43 PM   #2
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You should team up with the guy selling the mazdaspeed torsen for cheap. He has no axles, and you kinda need both to do the swap.
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Old 02-24-2012, 03:09 PM   #3
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You should team up with the guy selling the mazdaspeed torsen for cheap. He has no axles, and you kinda need both to do the swap.
+1 teamwork
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Old 02-24-2012, 03:19 PM   #4
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What are the differences between the Mazdaspeed and non Mazdaspeed? I thought that they would work in any Miata 1.8 diff.
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Old 02-24-2012, 03:22 PM   #5
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I was under the impression that the MS had thicker axles.

Sorry OP, not trying to side track, just trying to help you get your stuff sold.
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Old 02-24-2012, 03:41 PM   #6
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I just did this swap. The axles look the same, but may be different. I did not remove them from the CV joints, so I really can't say for sure. What is different are the CV joints. They are larger diameter where they fit into the diff, about 2mm larger if I recall. So yes, you need MSM axles (CV's anyway) to fit a MSM diff.
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Old 02-24-2012, 03:54 PM   #7
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The CV would have nothing to do with axles fitting in the diff.
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Old 02-24-2012, 04:03 PM   #8
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Originally Posted by miata2fast View Post
The CV would have nothing to do with axles fitting in the diff.
The axles do not fit into the diff, the CV does. The axles fit into the (inner) CV joint. I can't say if the axles are different, but the splined end of the CV joint is larger where it fits into the diff.



That is a standard Miata inner CV joint & axle on the top, MSM on the bottom. On the CV joint, the seal area is the same, everything past there to the splined end is a larger diameter on the MSM CV joint. As I recall, 28mm vs 30mm.
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Old 02-24-2012, 04:53 PM   #9
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Thanks for the clarification. When you said CV, I thought you were strictly refering to the joint itself. I thought that you meant the joint was more robust.

Correct me if I am wrong, but I considered the smooth and splined area to be axle shafts, and only the joint to be the CV, thus creating a shaft in multiple parts with the CV joining them.
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Old 02-24-2012, 05:04 PM   #10
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Quote:
Originally Posted by miata2fast View Post
Thanks for the clarification. When you said CV, I thought you were strictly refering to the joint itself.
I pretty much was doing that
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I thought that you meant the joint was more robust.
It's bigger, so I would say yes, it probably is
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Correct me if I am wrong, but I considered the smooth and splined area to be axle shafts, and only the joint to be the CV, thus creating a shaft in multiple parts with the CV joining them.
The splined area in my pic is part of the CV joint as is the entire green area. The rubber boot covers part of the CV joint, I suppose one could argue both ways on if the boot is part of the CV joint. It will work without the boot, but not for very long. The axle is the round shaft between the inner and outer CV joints. Typically, its splined and snaps in the CV joint, under the rubber boots. Hope this makes sense.
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