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> 914/6 axles questions
Project 6
post Jun 23 2009, 09:19 AM
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OK, so I'm ready to install the engine and found a surprise. The PO was going to install a later model trans. As such, they installed 915 style stub axles. The oem stubs are lost in space.

The existing stubs don't bolt up to the 914/4 axles and CVs I was going to use. The 2.0/6 "S" spec motor puts out about 140hp. So I wasn't worried about twisting them with high torque since I used this set up with a 3.0 in the past.

My questions is....are 914/6 AXLES which I might have access to, compatible with 915 sized CVs? FYI 914/6 CVs have been NLA for 20+ years....

Since I have the sub axles, can easily find drive flanges for the trans, I was thinking this would be an easy alternative. Does the 914/6 axle have the same spline count? 28 is what I've been told.

Simply using a 911 axle won't work, too long. Buying 914/6 stub axles is an expensive deal, $5-600. Mittelmotor and Otto....

Some good news, I HAVE been able to locate one stub axle...it will need a little machining as it's a bit corroded. But I'm looking for alternatives.

Anyone BTDT? Or even better....an orphan 914/6 stubbie?
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Joe Bob
post Jun 23 2009, 06:15 PM
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(IMG:style_emoticons/default/stirthepot.gif) Stirring the pot O Krusty one....stirring it up but gud.... (IMG:style_emoticons/default/stirthepot.gif)
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SLITS
post Jun 23 2009, 06:18 PM
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Hell John .... at my age '65 - '68 are current models. Anything after that is futuristic.
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Joe Bob
post Jun 23 2009, 06:20 PM
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I know who's shorter....who's older?
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SLITS
post Jun 23 2009, 06:25 PM
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I think I have him by a year or so.
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914Sixer
post Jun 23 2009, 07:09 PM
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Why not do it the simple way as the Dr says.? Get a set of repro stub axle from Otto's. They bolt to the 4 axle and mate to the -6 hub.

-6 axles and 4 axles are the same diameter and length. I cannot remember if the spline count for the axle shaft is different. -6 CVs have 6 bolts and no pins. -4 have 4 bolts and 2 pins. Both CV joints for the 6 and 4 are NLA.

-6 rear hubs and 69-73 911 rear hubs are the same part number. Stub axles for the 69-73 911 will fit in the hub. These hubs are 100mm. I do not know if the 100mm CV joint will fit onto the 914-4 shaft.


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Joe Bob
post Jun 23 2009, 07:12 PM
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$600 bucks......they should sleep with me and do my laundry.....since it's not gonna happen, no thanks.
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914Sixer
post Jun 23 2009, 07:24 PM
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I paid $350 for my stub axles from Otto's but it has been awhile.
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Cap'n Krusty
post Jun 23 2009, 08:16 PM
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QUOTE(914Sixer @ Jun 23 2009, 06:09 PM) *

Why not do it the simple way as the Dr says.? Get a set of repro stub axle from Otto's. They bolt to the 4 axle and mate to the -6 hub.

-6 axles and 4 axles are the same diameter and length. I cannot remember if the spline count for the axle shaft is different. -6 CVs have 6 bolts and no pins. -4 have 4 bolts and 2 pins. Both CV joints for the 6 and 4 are NLA.

-6 rear hubs and 69-73 911 rear hubs are the same part number. Stub axles for the 69-73 911 will fit in the hub. These hubs are 100mm. I do not know if the 100mm CV joint will fit onto the 914-4 shaft.


/6 CVs have pins, IIRC (and I think I do!) 100mm CV joints that fit 911s WILL NOT fit /4 axles, and that's what this whole discussion is about. (I use the term discussion loosely.) As has been repeated seemingly endlessly, the spline counts are different ......... They'll fit 914/6 axles, though, I'm pretty sure, and that would solve the problem, IF we had some /6 axles. But we don't. What we DO have are the inner 100mm flanges, 100 mm outer stubs, and a number of (probably) useable 100 mm CV joints. Boots are not an issue. We also have a number of /4 axles, complete with CVs, and 914 drive flanges. What we DO NOT have are (1) 914/6 stub axle or (2) 914/6 axle shafts. We need one or the other. The least complicated (and potentially the least expensive) option is gonna be the single 914/6 stub axle.

The Cap'n
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Project 6
post Jun 24 2009, 02:42 PM
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Cheap is gud....
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IronHillRestorations
post Jun 24 2009, 03:43 PM
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Cupomeat
post Jun 24 2009, 03:58 PM
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(IMG:style_emoticons/default/stirthepot.gif) Just FYI, the 912 shafts were used on 69-79 beetle, as the 1966-68 beetles still had a swing axle suspension. IRS came to the beetle in 69, but I believe the T3 had it in 66. I'll check that.
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sharper
post Jun 24 2009, 04:27 PM
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Here is my two cents since I went through this just a month ago. I had a 915 transmission, early 911 stubs, hubs, CVs, and axles (they are 1" too short). A friend had a pair of new 914/6 axles but they WOULD NOT work with the 911 CVs as they were too narrow (not sure about spline count). I ended up getting the Sway-A-Way axles that are 20.25" long with 28 spline count and everything worked great.

Based on the orginal post though it sounds like a 901 tranny is being used which means the inner and outer CVs are different diameters. So either the output flanges or stubs have to be changed or a custom axle with the two different spline patterns on the ends could be used.
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Derek Seymour
post Jun 24 2009, 06:44 PM
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QUOTE(Cupomeat @ Jun 24 2009, 02:58 PM) *

(IMG:style_emoticons/default/stirthepot.gif) Just FYI, the 912 shafts were used on 69-79 beetle, as the 1966-68 beetles still had a swing axle suspension. IRS came to the beetle in 69, but I believe the T3 had it in 66. I'll check that.


1968 Autostick models had IRS. Splitting hairs, but....
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Cap'n Krusty
post Jun 24 2009, 07:21 PM
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QUOTE(Cupomeat @ Jun 24 2009, 02:58 PM) *

(IMG:style_emoticons/default/stirthepot.gif) Just FYI, the 912 shafts were used on 69-79 beetle, as the 1966-68 beetles still had a swing axle suspension. IRS came to the beetle in 69, but I believe the T3 had it in 66. I'll check that.


Just how hard is it to understand that VW axles and Porsche axles have different spline counts? From the repeated attempts here to dispute that, it must be pretty damn hard. BTW, T3s had swing axles through 1968, just like everything VW except the bus which got IRS in 1968, and the aforementioned autostick cars (and automatics). The Cap'n
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r_towle
post Jun 24 2009, 07:39 PM
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QUOTE(Cap'n Krusty @ Jun 24 2009, 09:21 PM) *

QUOTE(Cupomeat @ Jun 24 2009, 02:58 PM) *

(IMG:style_emoticons/default/stirthepot.gif) Just FYI, the 912 shafts were used on 69-79 beetle, as the 1966-68 beetles still had a swing axle suspension. IRS came to the beetle in 69, but I believe the T3 had it in 66. I'll check that.


Just how hard is it to understand that VW axles and Porsche axles have different spline counts? From the repeated attempts here to dispute that, it must be pretty damn hard. BTW, T3s had swing axles through 1968, just like everything VW except the bus which got IRS in 1968, and the aforementioned autostick cars (and automatics). The Cap'n


So what your saying is that the 1968 and later buses (the modern ones) axles will fit the 914 provided you use the autostick (or automatic) transmission? Would that require the NLA microswitch?

R
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Rob-O 1167
post Jun 24 2009, 07:44 PM
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Jeez...talk about a hijacked thread. So did get your stub or not? You also said you 'might' have access to some /6 axles. Did that pan out? If not, I have a set here in the garage collecting dust that I could offer up. Not trying to turn this into a classified ad, just letting you know.

I've re-read this a few times and am still unsure of what /6 owners do when they need a new CV.
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SLITS
post Jun 24 2009, 08:58 PM
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QUOTE(Rob-O 1167 @ Jun 24 2009, 06:44 PM) *

Jeez...talk about a hijacked thread. So did get your stub or not? You also said you 'might' have access to some /6 axles. Did that pan out? If not, I have a set here in the garage collecting dust that I could offer up. Not trying to turn this into a classified ad, just letting you know.

I've re-read this a few times and am still unsure of what /6 owners do when they need a new CV.


If it is a real 914/6 CV:

It would be really cool if you could/would measure the bar length and post it. Hopefully it is 20 1/4" long.

It would also be nice to know if the splines on the end of the bar number 28.

I got Mike a pair of stub axles.
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Cap'n Krusty
post Jun 24 2009, 09:21 PM
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QUOTE(SLITS @ Jun 24 2009, 07:58 PM) *

QUOTE(Rob-O 1167 @ Jun 24 2009, 06:44 PM) *

Jeez...talk about a hijacked thread. So did get your stub or not? You also said you 'might' have access to some /6 axles. Did that pan out? If not, I have a set here in the garage collecting dust that I could offer up. Not trying to turn this into a classified ad, just letting you know.

I've re-read this a few times and am still unsure of what /6 owners do when they need a new CV.


If it is a real 914/6 CV:

It would be really cool if you could/would measure the bar length and post it. Hopefully it is 20 1/4" long.

It would also be nice to know if the splines on the end of the bar number 28.

I got Mike a pair of stub axles.


Does that mean I get mine back? You have one more? The Cap'n
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SLITS
post Jun 24 2009, 10:13 PM
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QUOTE(Cap'n Krusty @ Jun 24 2009, 08:21 PM) *

QUOTE(SLITS @ Jun 24 2009, 07:58 PM) *

QUOTE(Rob-O 1167 @ Jun 24 2009, 06:44 PM) *

Jeez...talk about a hijacked thread. So did get your stub or not? You also said you 'might' have access to some /6 axles. Did that pan out? If not, I have a set here in the garage collecting dust that I could offer up. Not trying to turn this into a classified ad, just letting you know.

I've re-read this a few times and am still unsure of what /6 owners do when they need a new CV.


If it is a real 914/6 CV:

It would be really cool if you could/would measure the bar length and post it. Hopefully it is 20 1/4" long.

It would also be nice to know if the splines on the end of the bar number 28.

I got Mike a pair of stub axles.


Does that mean I get mine back? You have one more? The Cap'n


Sent you a PM O' Krotchty One ...................
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Joe Bob
post Jun 25 2009, 12:17 AM
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Krusty get his back, SLITs gets a pair of CDI boxes rebuilt in trade....


I feel.....soooo....like Byron....
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