Porsche Enthusiasts Club Forum

It's the small end of the inner CV joint that had what looked like a bit of a clip and I could easily slide it along the driveshaft. I think I'll change the boots and regrease the joints just as a precaution, easier and cheaper than replacing the whole lot later on.

hmmm...I've got a feeling mine need doing. No noise for the first few miles but the squeeling soon starts when turning left particularly. Boots look in good condition. Do the joints always need replacing or does replacing the grease solve it?

Squealing sounds more likely a brake pad or backing plate rubbing than a CV. CV joints make clip-clop or clack clack noises. I'd investigate the brake that side first TBH.
I needed one joint the inner was totally knackered, all it's balls were pitted & the outer had spalled, otherwise it was fine
The other three were OK, one I'd have changed if I was keeping the shafts long term but when (eventually) the blown 3 litre goes in then I'll upgrade the transaxle & with it will go S2 or Turbo driveshafts, which are bigger in diameter with chunkier CV joints.

If you're a TIPEC member then I'll be writing this up for AT mag in the next few weeks.

Jim,

Might be worth mentioning the importance of the right bolt spec - one of our region's members recently sourced some replacement CV bolts from a well known aftermarket parts supplier to find that they were way below the tensile reqmts. The CV bolts need to be 12.9, as are the ones supplied by Porsche (inscribed on the head of the bolts - this refers to the UTS, although I'm not sure about the units) - which is why they're pricey!! Incidentally, once challenged the supplier refunded his cash in full!

Did some checking: the dodgy ones he received were marked 8.8 (relates to ISO grade), the correct ones are 12.9. The 8.8 are about 60% of the UTS of the 12.9s. They 8.8s were also untreated, which would mean early onset of rust and a nightmare when the job comes around again!!

Yup a couple of the specialists had bolts that were suspiciously cheap!
When I did mine I found it wasn't the shank of the bolt that had seized it was the head to the washer, so I used spray grease on them, I also lightly copa sliped 'em as It will be me getting them out in future!

When I got my 944 it had the tell tail CV clunk under acceleration. A friend of mine has spent his life working on Porsche in an independent garage he told me it would be the inside joint on the near side as the heat from the exhaust running under it dries the greases out over a long period of time and you can usually get away with washing them out and repack it with lithium CV greases. Took the pair of and greased the lot for £10 been good as gold ever since. I looked at the shafts on my 924 and that one was the same with dried out grease in the inner NS boot. One of those tasks worth doing in the winter months while your waiting for the summer to start and save the cost of new joints.

I must admit I was convinced it'd be the exhaust side but it wasn't! Mine was transaxle end off side which had grease that looked more like sand! The inner was chipped & the balls spalled so that got replaced & the rest stripped & greased, also repainted the driveshafts themselves. I think the reason it had suffered was that the small gaitor end was a very loose fit on the shaft & the water had got in.