Hey Guys,
Just curious...how trashed are these CVs?
Ranging on a scale from..."you've easily got another 100K in them"....to...."it's amazing you weren't stranded".
Also curious how/why there are three distinct grooves.
Thoughts?
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Full Version: How far gone are these CVs?
Looks like an even wear pattern on all the races. Not an expert in this area but I would use them.
My thoughts are not scaler.
I.ve always understood if the races are grooved or chipped on the edges....replace em.
They are a 10 on the dirty frekin nasty scale....so you don.t want to do them again because you could get 1,000 more miles from them.
Those looked grooved to me, I.d replace them.
I.ve always understood if the races are grooved or chipped on the edges....replace em.
They are a 10 on the dirty frekin nasty scale....so you don.t want to do them again because you could get 1,000 more miles from them.
Those looked grooved to me, I.d replace them.
I've got 4 just like that 
I've always heard if you can run your fingernail over the mating surface and feel a gouge, you should replace them. Replacing these can be an expensive proposition, so I'd love to hear different.
Gary
I've always heard if you can run your fingernail over the mating surface and feel a gouge, you should replace them. Replacing these can be an expensive proposition, so I'd love to hear different.
Gary
FYI - apparently Porsche has reintroduced the original 914 CVs + axles as one part at not much more, plus they're the real deal old school type, which are far better than the Type I converts IMHO.
Unfortunately, they won't match the splines of the old part CVs, so you've got to do the axles with their superceded part number ones anyway - ergo the whole banana vs CVs only.
The was a post on here a coupla weeks ago about the new part availability, so do a search.
They won't be cheap, but they'll last til your grandkids have the car, unless you drive it a lot!
A lesser cost alternative would be the converts sold by Tangerine & others.
One must ask themselves, now how did that race get grooved in the first place when it started out as a smooth rolling surface??
... & I think you'll answer your own question!
PS - IIRC the correct CVs used on our 914s at the factory were the same as those used on the 911s, but with a 914-specific spline/axle. So I think they did the 999- p/n supercession ones with the 911 or another spline count. I got some last year from Rich Bontempi at HPH before Porsche released this new current run of them, & that's what he told me about the ones I got (also supereceded p/n), & the 911 CV info is what my 40+ year mechanic Hans said many times over the years, & he was factory trained in `69 on 914s & used to be a dealer tech since the 60's in Austria & US before starting his own shop in`72 FWIW.
Good Luck!
Tom
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Unfortunately, they won't match the splines of the old part CVs, so you've got to do the axles with their superceded part number ones anyway - ergo the whole banana vs CVs only.
The was a post on here a coupla weeks ago about the new part availability, so do a search.
They won't be cheap, but they'll last til your grandkids have the car, unless you drive it a lot!
A lesser cost alternative would be the converts sold by Tangerine & others.
One must ask themselves, now how did that race get grooved in the first place when it started out as a smooth rolling surface??... & I think you'll answer your own question!
PS - IIRC the correct CVs used on our 914s at the factory were the same as those used on the 911s, but with a 914-specific spline/axle. So I think they did the 999- p/n supercession ones with the 911 or another spline count. I got some last year from Rich Bontempi at HPH before Porsche released this new current run of them, & that's what he told me about the ones I got (also supereceded p/n), & the 911 CV info is what my 40+ year mechanic Hans said many times over the years, & he was factory trained in `69 on 914s & used to be a dealer tech since the 60's in Austria & US before starting his own shop in`72 FWIW.
Good Luck!
Tom
///////
QUOTE(Tom_T @ Feb 16 2016, 09:27 PM) 
FYI - apparently Porsche has reintroduced the original 914 CVs + axles as one part at not much more, plus they're the real deal old school type, which are far better than the Type I converts IMHO.
Unfortunately, they won't match the splines of the old part CVs, so you've got to do the axles with their superceded part number ones anyway - ergo the whole banana vs CVs only.
The was a post on here a coupla weeks ago about the new part availability, so do a search.
They won't be cheap, but they'll last til your grandkids have the car, unless you drive it a lot!
A lesser cost alternative would be the converts sold by Tangerine & others.
One must ask themselves, now how did that race get grooved in the first place when it started out as a smooth rolling surface??... & I think you'll answer your own question!
PS - IIRC the correct CVs used on our 914s at the factory were the same as those used on the 911s, but with a 914-specific spline/axle. So I think they did the 999- p/n supercession ones with the 911 or another spline count. I got some last year from Rich Bontempi at HPH before Porsche released this new current run of them, & that's what he told me about the ones I got (also supereceded p/n), & the 911 CV info is what my 40+ year mechanic Hans said many times over the years, & he was factory trained in `69 on 914s & used to be a dealer tech since the 60's in Austria & US before starting his own shop in`72 FWIW.
Good Luck!
Tom
///////
No, 911 cv's are much larger.
I bought two complete axle assemblies from Porsche and they came pre-greased and ready to go for about 250 each.
QUOTE(914_teener @ Feb 16 2016, 07:10 PM)
My thoughts are not scaler.
I.ve always understood if the races are grooved or chipped on the edges....replace em.
They are a 10 on the dirty frekin nasty scale....so you don.t want to do them again because you could get 1,000 more miles from them.
Those looked grooved to me, I.d replace them.
Those groves you likely can feel just running your finger over them.
If you can then they're done.
QUOTE(Tom_T @ Feb 16 2016, 09:27 PM)
...
The was a post on here a coupla weeks ago about the new part availability, so do a search.
http://www.914world.com/bbs2/index.php?sho...61&hl=Ellis
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