Replacing a drive shaft
 

A torn CV boot and some water got in there damaging the spline on the drive shaft so I'm replacing the drive shaft on that side. Just wondering if there is any safety or performance issues if I replace only one side leaving me with one drive shaft original and the other new (e.g. different weight).

Thanks!

http://forums.pelicanparts.com/uploa...1498746961.jpg

no

I had the same issue so I just replaced both. If one side went bad the other is not far behind


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Direct and to the point :) thanks!

I'm also having the calipers restored plus a few other small items so I need to keep the cost down a bit where I can ( in case the wife sees the Visa bill) 🙂

I am just South of you and can give you a pair of axles for cost of shipping. To be clear these are only a pair of shafts. PM me if interested.

New boots, gaskets, bolts and grease for the other side is pretty cheap. Repacking the CVs before they go bad is dirty work but cheap insurance.

If she sees it just tell her your just trying to keep her safe. Calipers are not hard to rebuild. Just take your time and reference you Bentley manual to make sure and you also have a lot of backup on the forum.


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True enough - this would definitely be a good time to do it. Had a look at your car, looks great, love those sport seats!

check the rubber lines. if they look cracked or dried out replace them. they DO go bad

If you're already in CV grease mayhem you may as well inspect the other side. Be prepared to find pitting by having one or two new CVs on hand. I found one of mine damaged.
https://uploads.tapatalk-cdn.com/201...6ef03565ee.jpg
https://uploads.tapatalk-cdn.com/201...2914571054.jpg

If they all look good you could swap sides to even out wear. Definitely read the ultimate CV thread http://forums.pelicanparts.com/porsche-911-technical-forum/222537-reconstructing-constant-velocity-cv-joints.html

Good luck




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Does that nick photographed above have any real impact?

A large metal ball bearing slides through that big groove,
so it seems like a tiny nick would be totally moot.

The first photo nick seems like it would have no impact, but the 2nd photo looks like a bigger chunk.

The only scenario I can think of would be the nick being so big that the ball no longer rolls smoothly over the "pothole"
Then maybe you'd hear a sound? Or it would start to wear the ball away?

That nick is the sign of a metal casting flaw because you can see some depth in it. The wear around the nick will progress sort of quickly because the hardening in and around the nick has been compromised.

Also the picture showing the nick is an example of a CV that has been "flipped" or run in both directions on the car. In other words the axle was run on one side of the car and then removed and run in the other direction, most likely by installing it on the other side of the car. The telltale sign is the wear pattern on both sides of the race. An axle that has been run in only one direction will have the wear pattern on just one side.

It's usually the race that wears and the balls look fine. The balls are hard chrome coated and most often look just fine even if the race shows some major wear or pitting. That said, I just did the re-grease and re-boot job on a set of 2001 dated Carrera 108mm CV axles and the races look fine with just some typical wear. But one CV had the set of all six balls were scuffed (could feel the roughness with a fingernail) in various locations around the periphery. So I sourced some used balls from Pelican member Tom Butler to "rebuild" the axles as best I could.

I agree that inspecting the other side is a good idea. But your problem was rust in the splines due to a boot cracked probably for a long time. Thrifty as I am, I'd replace that shaft. But absent damage to the other shaft, no need to replace it. They do break, but can also last a long long time. I've got the original '77 splines in my updated to SC spec car, and they've yet to break despite heavy DE and racing. Lots of CVs changed (if you can feel an imperfection in a race, replace, and that is a big hole through the case hardening), but never an axle.

Carl - PM'd you but want to update here that two very nice axles are on the way. Your patience will be rewarded!

Did not lose anything in the fires here in the NW btw but they certainly did distract us for a bit!

Patience WAS rewarded - thanks Jdub!
 

absolutely perfect! Can't wait to install - I might even do a short video if I feel inspired. Thanks again Jdub, I owe you one! PM me the shipping cost and I'll reimburse

http://forums.pelicanparts.com/uploa...1500482977.jpg

http://forums.pelicanparts.com/uploa...1500485006.jpg

once it starts get them out, coz the metal went somewhere and will just start chewing up even more.

Replacing a drive shaft
 

I am in the middle of this project. All races show significant wear and damage. Multiple divots on the tracks, visible and when running your finger in the grooves of the outer race. All units are dated with two manufactured in "77" and two in "84".
https://uploads.tapatalk-cdn.com/201...4bb03e209a.jpg

https://uploads.tapatalk-cdn.com/201...28c23d1a8f.jpg

https://uploads.tapatalk-cdn.com/201...1b29d8466a.jpg

Spider gears also show divots and gouges

Found this little nugget when cleaning the shafts. Surface rust and pitting where the boot is suppose to seal to the shaft.
https://uploads.tapatalk-cdn.com/201...bc15f9958c.jpg

https://uploads.tapatalk-cdn.com/201...60d54c1f0f.jpg

If I clean this area up and seal it via paint or powder coating, should I be good to go?

Cheers


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Yep that shaft will seal fine I think

Replacing a drive shaft
 

Thanks KTL,
Cleaned and coated.
https://uploads.tapatalk-cdn.com/201...ecf98f6872.jpg

https://uploads.tapatalk-cdn.com/201...23e2b65e91.jpg
Here is another question regarding the lock washers. I have sourced some washers that are a little different dimensionally than the factory ones. My question is that will the size make any difference regarding the bolts.

Here are the differences-

OEM thickness
https://uploads.tapatalk-cdn.com/201...5581b8a2db.jpg

New
https://uploads.tapatalk-cdn.com/201...c593d72118.jpg

OEM OD
https://uploads.tapatalk-cdn.com/201...9120c555a2.jpg

New OD
https://uploads.tapatalk-cdn.com/201...7a7225d465.jpg

New ID
https://uploads.tapatalk-cdn.com/201...93dd799c26.jpg

OEM ID
https://uploads.tapatalk-cdn.com/201...f0ca60e0ce.jpg

OEM
https://uploads.tapatalk-cdn.com/201...37795193c6.jpg

NEW
https://uploads.tapatalk-cdn.com/201...95ee28cbd9.jpg

Thoughts?


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