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Posted by: larryM Mar 21 2019, 03:56 PM

going thru my stash, prepping for the yard sale

have 2 Lobro CV's in old boxes

- believe one is -6, per fella i got it from long ago

914 3320 2903 - is 914-4 all ?

914 3320 2901 - is what? -

any help?

update - lot's of good info in responses below - so I finally unboxed 'em & counted the splines 04-02-2019

the 029 01 is a -6- CV, appears to be new - in a oldish cardboard-brown box with blue Lobro printing

the 029 03 is a -4- CV, also appears to be new - in a yellow Lobro box that has seen a bit of haphazard shelf life -

both wrapped in brown oil-paper in the boxes

fwiw - web searching the numbers comes up with varying & sometimes incorrect fitments on various of our parts-seller sites

- i find the same part-number vs fit problem with new -6- rear cyl rebuild kits (ATE) that i have had for awhile - b'ot 'em back when they were NLA, from E.A.S.Y.'s last stock

- "if they say it on the internet .... it may not be true"

Posted by: Mark Henry Mar 21 2019, 04:35 PM

Any other numbers on there?
VW and porsche numbers are groups of 9 (3x3) and sometimes a 2 letter or 2 number suffix.
XXX XXX XXX -XX

Posted by: bbrock Mar 21 2019, 04:40 PM

914 332 029 03 is the correct 914-4 part number.

Posted by: Mark Henry Mar 21 2019, 05:10 PM

This ad (first link I clicked on google) says 914 332 029 01 has been superseded by 914 332 029 03 so likely they are both /4 CV's.

https://www.sonnenporscheoemparts.com/oem-parts/porsche-splined-joint-91433202903

Posted by: bbrock Mar 21 2019, 05:19 PM

This could explain a problem @http://www.914world.com/bbs2/index.php?showuser=9964 and I are having. We both ordered 914 332 029 03 joints from Sunset Porsche and what we received were 25-spine joints which are for sixes. Still waiting on PCNA to weigh in on the problem. They can change the part numbers all they want, but it won't make them fit the axles.

Posted by: 76-914 Mar 21 2019, 07:05 PM

PET only lists the -03. Not sure about what the -01 was/is.

Posted by: larryM Mar 21 2019, 11:11 PM

.... the answer is ..... count the splines?

Posted by: Mark Henry Mar 22 2019, 05:07 AM

Yes, I didn't vet the source, just saw that ad on the first google search link that came up.
Doesn't the new complete half shafts have a different spline count (or something different) than a regular /4 CV?



Well.... 25 splines will be a /6, I'm sure someone will chime in with the number of splines on a /4 axle.

Posted by: 914Sixer Mar 22 2019, 05:28 AM

914 are 33 splines. Go to Blind Chicken racing for CV joint 101.

Posted by: bbrock Mar 22 2019, 07:43 AM

This was going to be my next question. I think it solves the mystery but doesn't make Kent or I happy. Bottom line is the complete axle assemblies appear to be from the /6 with 25 splines which would bolt right on to a /4 or /6. That means the 33-spline joints are truly NLA.

The confusion started way back with the PET. It lists two entries for the complete shaft assembly, both with P/N 914-332-009-03. One entry shows it for a /6 and the other doesn't specify. The for the CV joint, they have only one P/N listed (914-332-029-03) which they say is for all /4 models. As Kent said, there is no part listed for the /6.

I will bet that the correct P/N for the six is 914-332-009-01 for the axle and 914-332-029-01 for the joint. If you plug those P/Ns into the Porsche catalog, you get notes that both have been replaced by the 03 versions. That's actually backwards and while the axles are interchangeable, the stand alone joints are not. Unfortunately, Porsche has jacked the price of complete axles to $680 per side which is a ridiculously expensive way to replace a couple of joints.

Bottom line, looks like I'm in the market for a couple of 33-spline joints again.

Posted by: dr914@autoatlanta.com Mar 22 2019, 09:41 AM

even my old old original porsche 914 parts book has only listed the 03 suffix as a 914-4 with no listing for the 914-6 other than a complete axle with cvs attached

Posted by: bbrock Mar 22 2019, 09:44 AM

George, can you check what P/N they list for the complete axle? I'm betting the 03 version.

Posted by: SteveL Mar 22 2019, 10:13 AM

If they turn out to be new 4cyl CV joints, I might be very interested - how much?

Posted by: 914Sixer Mar 22 2019, 02:02 PM

SO, the short version is they reproduced the -6 axle and joint not the -4

Posted by: bbrock Mar 22 2019, 02:24 PM

That's my take anyway. AND attached the -4 part numbers to them.

Posted by: 914_7T3 Mar 22 2019, 03:04 PM

I'm far from an expert on anything, but does the half shaft part number add to the confusion or clarify as it references both the 4 cyl. & 6 cyl. models.

Posted by: bbrock Mar 22 2019, 03:49 PM

Do you happen to know the spline count on those?

Here's where I think the confusion started which probably goes all the way back to when the first PET was drafted in the late 60s. Notice there are two entries for the complete half shaft, both with the same P/N and one missing a description of models it pertains to. What I think happened was that the 914-4 P/N got accidentally linked to the -6. Then look down at the cv joint entry. Only one P/N listed and only for the -4. -6 is missing. Clearly something is amiss here and it is biting us in the ass now.

Posted by: 914_7T3 Mar 22 2019, 06:51 PM

Nope, didn't know there was more than one type. However, check the photos on this Evil Bay listing from High Performance House. If you count, you can clearly see the 33 splines.

"NOS Porsche 1970-76 914-4 CV Joint GERMAN 33 Spline Original 914-332-029-03 NEW"

https://www.ebay.com/itm/NOS-Porsche-1970-76-914-4-CV-Joint-GERMAN-33-Spline-Original-914-332-029-03-NEW/264236412690?_trkparms=aid%3D444000%26algo%3DSOI.DEFAULT%26ao%3D2%26asc%3D20190129125700%26meid%3D6dd1922ab7d647299634efd82a3b2726%26pid%3D100752%26rk%3D2%26rkt%3D5%26sd%3D254160235503%26itm%3D264236412690&_trksid=p2047675.c100752.m1982

Says they have 5 available

Posted by: larryM Mar 25 2019, 10:26 AM

all above is interesting!

- (sometimes we have to remind ourselves that these cars were never intended to last for 50 yrs and ever be rebuilt-restored) -

.... so - is the axle -to-hub spline the same for both the -6 & -4 meaning one can use either version complete axle in a -6 ?????

i ask cuz i also have 2 complete -4 axles & they would be important to have as -6 spares if they fit the -6 hub

i haven't yet got around to inspecting the 2 CV's that started this post

- i see AA has the -4 CV for $75 - seems like a bargain?

Posted by: sixnotfour Mar 25 2019, 11:15 AM

74 parts cat.


Attached thumbnail(s)

Posted by: Mark Henry Mar 25 2019, 01:06 PM

Likely they are modified VW bug CV's.

At least we're not totally SOL, VW bug CV's and boots can be made to work.

Posted by: bbrock Mar 25 2019, 01:21 PM

Unless there is something about a six that I don't understand, yes. The half shafts are interchangeable. I think what gets confusing is that the stub axle is not part of the half shaft and either of the CVs will bolt to either stub axle and vice versa (4 bolts + 2 roll pins).

It's confusing as hell but there are two separate assemblies that need matching splines of their components, but the complete assemblies are interchangeable.

Assembly 1: Half shafts (2 CV joints and an axle) The splines of both joints have to match the axle which is either 25 or 33 splines.

Assembly 2: Hub (1 wheel hub and 1 stub axle) I have no idea if spline counts different between -4and -6 but obviously the stub and hub need to match.


I saw those but they are "rebuilt" with no details on what that means. To be perfectly honest, I've had horrible experience buying used parts from them.



This confirms they've gotten their parts numbers mixed up. If you plug the -6 axle number into the Porsche parts lookup, you get this:



But it appears what you get is the old 914 332 009 01 part so the replacement note is backwards. Not a big deal when buying a complete axle assembly, but a big problem when just replacing joints.

Posted by: larryM Mar 25 2019, 09:59 PM

to add to the discussion - i googled it

geez - it would be useful to us all if we had one thread with all this connected info

found this 2009 thread - here
http://www.914world.com/bbs2/index.php?showtopic=96982&st=0

"...issue gets confusing because different people call the same part by different names. ... it's:

tranny <---> flange <---> cv <---> axle <---> cv <---> stub axle <---> hub"

AND THIS - http://forums.pelicanparts.com/porsche-911-technical-forum/597129-experts-rear-stub-axles-help-please.html

AND Paternie's book:
https://books.google.com/books?id=yMJFvrORtzAC&pg=PA121&lpg=PA121&dq=914-6+hub+splines&source=bl&ots=OhYpLZUNtr&sig=ACfU3U0w30Nu8LdEqyffIeUQC0VW2cqaXQ&hl=en&sa=X&ved=2ahUKEwiPwr_K857hAhVJXKwKHcgCCx0Q6AEwCHoECAgQAQ#v=onepage&q=914-6%20hub%20splines&f=false

AND on Geoge's site - http://www.914club.com/bbs2/index.php?showtopic=63702


google
https://www.google.com/search?client=firefox-b-1-d&q=914-6+hub+splines

more there