rear driveshaft

[Walshie]

Hi guys, has anyone had experience of a rear driveshaft suddenly coming under bolted from the gearbox. Not sure at the moment if it is fixing failure as I am away and have not had chance to Jack her up to look

[RandallNeighbour]

They only come "unbolted" from the gearbox when they weren't torqued down properly to specs and with some locktite on the threads.

[BoxsterLS376]

Not usually unless someone has been messing with it... Have any service work done recently?

Shouldn't be a big deal, those bolts are tough just put 'em back and torque 'em down - should be good to go!

[Walshie]

Originally Posted by BoxsterLS376

Not usually unless someone has been messing with it... Have any service work done recently?

Shouldn't be a big deal, those bolts are tough just put 'em back and torque 'em down - should be good to go!

Thanks. I will let you know what's find out.

[BIGJake111]

I had this happen to my first boxster.

It has one bolt that didn't match the others from an indie shop that recently did a service.

[RandallNeighbour]

And there's a bunch of bolts too!

[jsceash]

What year and what model. 2002 and Older base models can shear the bolts spirited driving, hopping the tires, hard acceleration right or left turn.

Once one goes the rest will follow in short order. If they come loose and you have driven very far grease starts coming out the CV joint. If there is any sign of grease clean the threads extremely well in the hole and get new bolts. the CV joint grease will prevent the Loctite from working and the result is the bolts will back out. Repack the bearing.

[Walshie]

Originally Posted by jsceash

What year and what model. 2002 and Older base models can shear the bolts spirited driving, hopping the tires, hard acceleration right or left turn.

Once one goes the rest will follow in short order. If they come loose and you have driven very far grease starts coming out the CV joint. If there is any sign of grease clean the threads extremely well in the hole and get new bolts. the CV joint grease will prevent the Loctite from working and the result is the bolts will back out. Repack the bearing.

Hi it's a 97 tiptronic. If the bolts shear off are they a pain to get out

[BIGJake111]

Originally Posted by Walshie

Hi it's a 97 tiptronic. If the bolts shear off are they a pain to get out

The car that I had it happen to was a 99 tip.

Can confirm the pain of getting the bolts out.

[jsceash]

Originally Posted by Walshie

Hi it's a 97 tiptronic. If the bolts shear off are they a pain to get out

Try to find some 5/16"steel brake tubing and a 12" 5/32" drill bit. Install the shaft with 2 bolts. Cut a 2" piece of the tubing insert it in the hole turn the shaft so the hole is to the rear. Run the long drill carefully through the tubing and bolt. Easy out the bolt.

I did 3 like this. I used a square Snapon /Blue point easy out set. I don't like the spiral type they can expand the bolt and lock it up worse.

[Walshie]

Back off holiday to find that only 1 bolt had sheared off from the flange the other 5 had come loose. Unfortunately the drive shaft also took out the sub frame and the lambda sensor.
All bits ordered and next sat set aside to do the repair.

[BoxsterLS376]

FYI you can simply pull the flange off of the transmission to make the repair easier, or just buy a good used one and swap em out!