pg1 driveshaft (passenger side)

[countrydude]

this is on a t16 turbo maestro, i had one that one of the bearings came off on the tripod in the inner cv joint about 500 miles ago. I found the fault and fitted another shaft. I have just been towed back after another driveshaft has sheared! I'm not sure why, it happened at around 5.45 so there wasn't the light to have a good enough look to see how or why. It has a type b diff so it should be feeding power to the other side rather than relentlessly feeding the power on. The shaft went on a small blip of power rather than giving it the beans.

I think the ball joint on that side has seen better days, have I just been unlucky or is there potentially an underlying issue?

[E_T_V]

Torsen diffs are harder on the driveshafts and diff bearings, but unless something is very bent (or the shaft was), then I can't see any reason for it.

If you take a good close up of the fracture face I'll take a look at it to see if there are any clues there.

[countrydude]

I'll post up tomorrow, cheers dan

[countrydude]

After a complicated day, i did manage to arrange delivery for tomorrow of 2 spares, and after a lot of digging around I managed to make one complete shaft! I'll be mobile as of tomorrow morning. Pics of shaft to follow...

[Russ]

So whats next then Phil a conversion to a low compresion 1.3 to ensure it never eats a driveshaft again :)

[countrydude]

So whats next then Phil a conversion to a low compresion 1.3 to ensure it never eats a driveshaft again :)

Ha ha, NO!

[Chris Y]

http://4.bp.blogspot.com/_3K88Os_ixFc/SaxpkP-9wrI/AAAAAAAAAoE/wGassszdE3I/s400/shaft.jpg


Aaaaaaahh, yeah :)

[countrydude]

my phone isn't connecting for some reason.

The shaft was a clean brake or at least what was left of it! Seems the anti vibration bush held onto enough damp to rot half the metal away causing a massive weakness. I managed to build up a shaft today so back on the road with a couple of spares arriving.

[countrydude]

http://i223.photobucket.com/albums/dd301/philstan/IMG00026-20110203-1157.jpg

There was about 50% of good metal left!

[E_T_V]

And crucially not the outer 50% that was intact.

Corrosion related fatigue failure I'm, afraid.

[countrydude]

And crucially not the outer 50% that was intact.

Corrosion related fatigue failure I'm, afraid.

Yeah, I was shocked to see how bad it was. I was really through with the shaft I built up, cleaning everything before re greasing, but I didn't check under the damper! But this is the original shaft I had on the maestro, it was one of the tripod splined bearings failed so it has been throughly abused, err, I mean tested! I'll switch it to the derv soon for the new one on the maestro.

[E_T_V]

Even a visual inspection won't pick up tiny cracks like that. You'd need to do a dye penetrant or MPI test to see the pre-existing flaw. (The bright area is the bit that fractured when it finally popped - the rusty bit will have been growing for years)