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> 915 tranny, cv's, 5 lug conversion
sj914
post Oct 26 2004, 10:59 PM
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I've got stubs and hubs from a 69 911 and a 915 tranny from a an 85. When I went to measure up the axle flanges from the 915 it matches the diameter of the stubs from the 69. Only thing is, is the 69 stubs mount the cv's with 4 bolts and 2 pins. What I was thinking is to have the 2 roll pin holes welded up and then drilled and tapped with the same size bolt hole as the other 4 bolts.

btw the 915 axle flanges and the stubs both use 10mm bolts.

Has anyone done this type of modification and on a safety stand point is this something that would be avoided.
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Series9
post Oct 26 2004, 11:10 PM
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Your '69 parts are not going to work with the '85 915 parts. The '69 parts are 8mm, not 10mm. If you're going to go through the trouble of doing the conversion this way, get some late 915 axles and some late 915 hubs to put together with the 10mm bolt tranny set up. If you do this, you'll need a couple of machined spacers for the hub/bearing assembly which you can get from Patrick (I'm not affiliated) for a reasonable price.
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skline
post Oct 26 2004, 11:17 PM
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Sounds like you speak from experience. Adapters are expensive last time I checked. Pelican sells them also as does Renegade.
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Series9
post Oct 26 2004, 11:24 PM
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Well, the late axles and hubs are expensive too, but, unlike the earlier 901 and early 915 stuff, the late parts will last virtually forever.

BTW, the late 915 axles have the stubs as an un-detachable part of the half-shaft. So, if you're looking for parts, get the 110mm flange parts with 10mm bolts that will have the stub assembled with the axle.

You can use a stock 914 bearing with these parts, but two small spacers are necessary on the sides of both bearings to settle differences in the parts.

I think this is the best way to go, and it's the way my car is set up.
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sj914
post Oct 26 2004, 11:29 PM
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QUOTE(914RS @ Oct 26 2004, 09:10 PM)
Your '69 parts are not going to work with the '85 915 parts. The '69 parts are 8mm, not 10mm. If you're going to go through the trouble of doing the conversion this way, get some late 915 axles and some late 915 hubs to put together with the 10mm bolt tranny set up.

Sorry about that, I just checked my spreadsheet of parts and the stubs are from a '70 car.

A couple minutes ago I just double checked the bolt size on both the stubs and axle flanges and they were both 10mm.

You made a good point of the spacers, I might need those.

Now in regards to the hubs I got a line on some late 915 axles. Thats why I wanted to know about welding in the roll pin holes and then drilling tapping them to mate the 915 cv's.
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sj914
post Oct 26 2004, 11:32 PM
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QUOTE(914RS @ Oct 26 2004, 09:24 PM)
Well, the late axles and hubs are expensive too, but, unlike the earlier 901 and early 915 stuff, the late parts will last virtually forever.

BTW, the late 915 axles have the stubs as an un-detachable part of the half-shaft. So, if you're looking for parts, get the 110mm flange parts with 10mm bolts that will have the stub assembled with the axle.

You can use a stock 914 bearing with these parts, but two small spacers are necessary on the sides of both bearings to settle differences in the parts.

I think this is the best way to go, and it's the way my car is set up.

i didn't know that the late 915 axles had undetachable stubs.
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sj914
post Oct 26 2004, 11:34 PM
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I thought the 5 lug hubs fromt later cars were a no go with a 914.
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Series9
post Oct 26 2004, 11:36 PM
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That why you need the full set up. Parts prior to '85 are not going to work with the flanges on your tranny.

'70 parts won't work.
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Series9
post Oct 26 2004, 11:37 PM
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QUOTE(sj914 @ Oct 26 2004, 10:34 PM)
I thought the 5 lug hubs fromt later cars were a no go with a 914.

That's why you need the spacers.

Trust me. I did it.
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skline
post Oct 26 2004, 11:37 PM
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I went with redrilled 4 lug hubs on mine, the future holds 911 or bus axles with the adapters they sell at Renegade. I need them more for the strength running the V8.
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Series9
post Oct 26 2004, 11:41 PM
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If you really want strength, go with the parts I've suggested. If you're using redrilled 914 hubs, you're using 901 CVs, and that's a problem for high power.
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ClayPerrine
post Oct 27 2004, 07:36 AM
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A combo that works, from the hub inboard to the Trans....

69 911 hubs.
Use Audi 5000 front wheel bearings ( three ball bearings inside instead of two)
944 Turbo stub axle and CV joint. (bolts to the 69 911 hub with no mod, uses 100 MM cv joint with 6 bolts)
914/ 4 axle. (the 944 turbo CV is internally splined the smae as a 914/4 axle)
944 turbo CV joint.
76 911/912E transmission flange. (Same size and bolt pattern as the 944 turbo CV joint).

This will all bolt on properly with NO spacers, NO adapters, and NO redrilled hubs. You get the oversized 100 MM 944 turbo CV joints that can handle most any power you want to put through them. This will work on a 915 or a 901 transmission.
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Britain Smith
post Oct 27 2004, 11:47 AM
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So what would you say a set of '69 hubs are worth? Possibly ones that look like this...

(IMG:http://www.britainsmith.com/Ebay/10-18-04/images/153_0013_JPG.jpg)


-Britain
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sj914
post Oct 27 2004, 11:51 AM
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QUOTE(Britain Smith @ Oct 27 2004, 09:47 AM)
So what would you say a set of '69 hubs are worth? Possibly ones that look like this...

(IMG:http://www.britainsmith.com/Ebay/10-18-04/images/153_0013_JPG.jpg)


-Britain

I bought a set of those minus stubs for 80.00
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fiid
post Oct 27 2004, 12:08 PM
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QUOTE(ClayPerrine @ Oct 27 2004, 05:36 AM)
A combo that works, from the hub inboard to the Trans....

69 911 hubs.
Use Audi 5000 front wheel bearings ( three ball bearings inside instead of two)
944 Turbo stub axle and CV joint. (bolts to the 69 911 hub with no mod, uses 100 MM cv joint with 6 bolts)
914/ 4 axle. (the 944 turbo CV is internally splined the smae as a 914/4 axle)
944 turbo CV joint.
76 911/912E transmission flange. (Same size and bolt pattern as the 944 turbo CV joint).

This will all bolt on properly with NO spacers, NO adapters, and NO redrilled hubs. You get the oversized 100 MM 944 turbo CV joints that can handle most any power you want to put through them. This will work on a 915 or a 901 transmission.

That's COOL! I don't even want to know how you figured that out. OK - I do.

(IMG:style_emoticons/default/boldblue.gif)
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ClayPerrine
post Oct 27 2004, 12:17 PM
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QUOTE(fiid @ Oct 27 2004, 10:08 AM)
QUOTE(ClayPerrine @ Oct 27 2004, 05:36 AM)
A combo that works, from the hub inboard to the Trans....

69 911 hubs.
Use Audi 5000 front wheel bearings ( three ball bearings inside instead of two)
944 Turbo stub axle and CV joint.  (bolts to the 69 911 hub with no mod, uses 100 MM cv joint with 6 bolts)
914/ 4 axle.  (the 944 turbo CV is internally splined the smae as a 914/4 axle)
944 turbo CV joint.
76 911/912E transmission flange. (Same size and bolt pattern as the 944 turbo CV joint).

This will all bolt on properly with NO spacers, NO adapters, and NO redrilled hubs.  You get the oversized 100 MM 944 turbo CV joints that can handle most any power you want to put through them.  This will work on a 915 or a 901 transmission.

That's COOL! I don't even want to know how you figured that out. OK - I do.

(IMG:style_emoticons/default/boldblue.gif)

I can't take credit for it. Wes Hildreth of H&H in Plano figured it out. He's been doing this stuff since a 914 was new. I am just passing along the knowledge.
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datapace
post Oct 27 2004, 12:21 PM
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Has anyone here actually *done* this? (IMG:style_emoticons/default/confused24.gif)

It's an interesting route, but I'd hate to round up all the parts and then find out something is incorrect. It's not like some of those parts are easy to come by.

-bryan
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andys
post Oct 27 2004, 04:47 PM
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Does anyone have any info (like a number) for that Audi 5000 bearing. A quick check revealed a couple of different options available (not sure what those options are). Dimensions would confirm if this is a fit or not.
The 914 bearing measures 42mm ID X 75mm OD X 37mm thick. My '89 Carrera bearing measures 42mm ID x 80mm od x 42mm thick.

Andy
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sj914
post Oct 27 2004, 07:46 PM
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The Audi and 944 parts idea sounds interesting, has anyone else done this or do the welding of the roll pin holes as stated on the first post?
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ClayPerrine
post Oct 28 2004, 05:56 AM
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Wes has actually done this on 6 different cars. I have all the parts for mine except the transmission drive flanges. I will be documenting it and posting it on the board for everyone to see.
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