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> HOW TO: Convert to real 5-lug in the rear using 944 CVs
Krieger
post Feb 7 2008, 10:17 PM
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Andy thanks for your help on this. I did this conversion for my axles last summer following Andy's original post. I have not installed axles in my car yet. I have one difference in how I did this. I bought new complete OEM cv kits. I did used the original spring washer installed on the axle prior to the cv being installed. It went together just as any other cv that I installed. I am not sure why Andy omits this. Hopefully he'll chime in. When I did my conversion I bought a used 944 axle/cv and disassembled it and took the parts to my machinist. He duplicated the exact profile of the 944 axle on my 914/4. I have a technical drawing of what he did if Andy wishes to have it included. Sorry to high-jack. Also FYI if you have 914/6 axles they have the same # splines as 6 bolt 100mm 911 cvs.
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SirAndy
post Aug 18 2008, 01:42 PM
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Just a quick update. I have been running my axles for a year now, two 2000 mile roadtrips and a few AX events. All with the 3.6L putting quite a bit of torque through them.

So far, no problems at all ...
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-JR-
post Jun 21 2010, 05:09 PM
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Based on Andy's notes I've assembled these details on part numbers...

Rear hub 1969 --> 1973 "901 331 065 09" 911 T/E/S *Not Carrera"
Rear Axel 1970 --> 1983 "901 332 232 00" 911 SC/SPM *Not Turbo*

944 CVs Any year, non-turbo "944 331 901 00"

I haven't researched transmission flanges. They will depend on your transmission selection.
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-JR-
post Jun 21 2010, 05:48 PM
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Alternate method: *no machine work*

I should add that I found this method burried on another website and I haven't confirmed it's validity but here goes...

-Rear hub 1969 --> 1973 "901 331 065 09" 911 T/E/S *Not Carrera"
-Audi 5000 front wheel bearings, three bearings internally compaired to 999-053-021-00 dual bearing for 914's and 911's.
-944 Turbo stub axel (951 332 235 35) mates with 911 hub
-944 Turbo CV joints (951 332 901 00)
-914 axel shaft
-911S,SC / 912E transmission flange (923 332 209 02) 1974 --> 1983

The original author claimed no machining / no spacers / 901 or 915 and the use of 100MM CV joints.

I am not able to find a part number for the Audi wheel bearing. So far my searches indicate that the Porsche bearing is the same for the Audi 5000. But from my Audi days I do seem to recall that the 5000 did have a better bearing option.
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SirAndy
post Jun 21 2010, 06:16 PM
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QUOTE(-JR- @ Jun 21 2010, 04:48 PM) *

-944 Turbo CV joints (951 332 901 00)
-914 axel shaft

The 944 CVs are too wide to fit on a stock 914-4 axle shaft.

That is why i had mine machined to accept the 944 CVs.
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Krieger
post Jun 21 2010, 06:37 PM
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I did exactly what Andy did. Here is the profile my machinist took off the 944 axle and cut into my 914 axle. (IMG:style_emoticons/default/biggrin.gif)


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Krieger
post Jun 21 2010, 06:39 PM
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Shit! I just noticed the date at the bottom. My axles were done 3 years ago, but my car is....still not done.
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-JR-
post Jun 21 2010, 10:24 PM
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QUOTE(SirAndy @ Jun 21 2010, 05:16 PM) *

The 944 CVs are too wide to fit on a stock 914-4 axle shaft.

That is why i had mine machined to accept the 944 CVs.


Thanks Andy! Like I said, the author claimed no machine work nessasary. He may have not used the retaining clip. My Audi Coupe never used retaining clips on it's CVs.

Since I have your attention Andy, your post only says 944 100mm CVs. Did you use the turbo ones or the standard CV joints?

BTW - Finally brought my 3.6 home last week. (IMG:style_emoticons/default/cheer.gif) Bought it almost 2 years ago!
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jaxdream
post Jun 21 2010, 10:29 PM
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There is another twist to the axle / cv delima, machine one end of the axle to fit the 944 cv , bolt that to the wheel side output flange ( 911 or modified 944 stub ) where the cv bolts to, the trans side leave un machined if you can't find the 911 / 915 course splined output flange for the 100mm cv, just use the 914 cv and trans flanges till you can get the proper flange to use the 944 100mm cv . when you get the flange for conversion , remove the axle , tkae to machine shop , have them machine the un machined end to fit the 944 100mm cv , install trans flange , cv , bolt up and go !!

My $.02 ....

Jack / Jaxdream
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SirAndy
post Jun 21 2010, 11:43 PM
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QUOTE(jaxdream @ Jun 21 2010, 09:29 PM) *
the trans side leave un machined if you can't find the 911 / 915 course splined output flange for the 100mm cv

Or, machine once and run athick washer until you get the correct output flanges ...
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SirAndy
post Jun 21 2010, 11:45 PM
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QUOTE(-JR- @ Jun 21 2010, 09:24 PM) *
He may have not used the retaining clip.

That's the only way that would work.

As long as you never jack up the rear of the car, that might work.

Otherwise, the axle shaft will slide right out of the CV ...
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SirAndy
post Jun 22 2010, 12:00 AM
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QUOTE(-JR- @ Jun 21 2010, 09:24 PM) *
Since I have your attention Andy, your post only says 944 100mm CVs. Did you use the turbo ones or the standard CV joints?

944-331-901-00-M60
CV Joint Kit With Boot, 924S/944/944S All, 944 Turbo (1986-87)

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jimkelly
post Jun 22 2010, 05:35 AM
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•two 911 ('69 - '73?) hubs, must have same bearing surface width as the 914 hubs

can the above hubs be drilled to 4 lug for those that want the strength but want to remain 4 lug ( wheels, calipers, rotors ) ??

found answer in different thread - yes.
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matthepcat
post Apr 10 2011, 02:28 PM
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What about using 944 hubs?
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scotty b
post Apr 10 2011, 03:03 PM
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QUOTE(matthepcat @ Apr 10 2011, 12:28 PM) *

What about using 944 hubs?


something else I have on my "too look into list " I have a whole rear from one I junked for yet another special project. (IMG:style_emoticons/default/shades.gif)
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matthepcat
post Apr 10 2011, 03:09 PM
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Well I am going to give it a try. What do I have to lose as I have 944 hubs on there right now.

The 944 hub also sticks out a little farther for those running modern offset wheels. This should allow one to use smaller wheel spacers.

QUOTE(scotty b @ Apr 10 2011, 02:03 PM) *

QUOTE(matthepcat @ Apr 10 2011, 12:28 PM) *

What about using 944 hubs?


something else I have on my "too look into list " I have a whole rear from one I junked for yet another special project. (IMG:style_emoticons/default/shades.gif)
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pcar916
post Apr 10 2011, 03:33 PM
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Having gone through this recently, The 911, 944 and 930 CV's have the same inner-race depth. So technically, you could run the 911(if you could find them) or /930 CV's on modified (as above) original 914-6 axles, or 944 CV's on the 914 axles. Take your pick!

But remember, the 944 stub axles require an inboard spacer so they mate up to the 914 wheel bearings properly. 911 SC stubs work without mods.

Good luck
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matthepcat
post Apr 10 2011, 04:13 PM
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Is this inboard spacer a custom piece or available somewhere?

Also there are early 944 hubs and late (85.5+) hubs.

Maybe this spacer you are talking about is only for the early 944?

QUOTE(pcar916 @ Apr 10 2011, 02:33 PM) *

Having gone through this recently, The 911, 944 and 930 CV's have the same inner-race depth. So technically, you could run the 911(if you could find them) or /930 CV's on modified (as above) original 914-6 axles, or 944 CV's on the 914 axles. Take your pick!

But remember, the 944 stub axles require an inboard spacer so they mate up to the 914 wheel bearings properly. 911 SC stubs work without mods.

Good luck
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matthepcat
post Jun 8 2011, 04:06 PM
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Update on 944 hubs.


They don't work becuase they push the brake rotor out too far. This makes the brake caliper to rotor alignment incorrect.

matt
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PeeGreen 914
post Jun 8 2011, 04:13 PM
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You can use spacers on the caliper to line them up (IMG:style_emoticons/default/confused24.gif)
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