ok, so there are two ways to do this im told, you can make a spacer to fill the area on the stub where the dust seal on a 944 used to live, or you can lathe that off, and let the stub sit deeper into the hub-
so here are pics with dimensions......
ill have to go back and write in the dimensions.... cant read the calipers on a few. (shoulda got the digital ones LOL)
the materials required.
Bearing, early 911 hub, 951 stub, calipers.
Bearing width.
diameter of "dust seal area" and diameter of bearing area on hub.
width of dust seal area
width of bearing area on hub
combined....
bearing diameter if you need it.
I prefer the later hubs, but then you would probably need another spacer.......
Hey, Aaron
Is that the setup that you have on your car now or something that youre looking into? I have the patrick motorsport setup now but i'm not crazy about the spacer that goes between the cv and trans output shaft. This looks like the way to go to me. Do you have a break down of the parts needed to complete this. Also, if I go to a 915 trans it should still all bolt up right?
Attached image(s)
Clay,
Which setup do you have on your six?
I'm going to a 2.7rs six and would hate to have cv/spacer come apart on me.
I've heard of these spacers/bolts coming loose and wrecking afew things.
Those 944 axles that bolt up to the coarse spline 915 output flange would also bolt up the the 911 stub axle from the same year and would not require machining.
The 944 axle is the replacement part for NLA 911 axles 1975-early 1984. If using a outer hub from the 911 (1974-1989), one would still need a 5mm spacer (the 911 bearings were 5mm wider).
Clay,
Could you break down the parts/years that you used on your six.
( hubs to trans out put flange ) got any pics handy?
Sounds like your setup works good w/o any spacers.
Thanks, for the info. Clay.
Looks like that may be the way I'll go about it also.
I'm looking to have the later 911 hub machined down to fit the 914 bearing/944 stub axle. Did you use a 944 turbo stub axle or just a plain 944 stub axle ( any info. on the year )?
someone find me those tranny flanges.....
A no machining/no spacer solution would be:
1. 76 911 (915 trans) 6 bolt, coarse spline drive flanges.
2. Complete 944 axle assembly with both CV joints and shaft. (Performance Products 909264)
3. 911 stub axle 6-bolt (1975-1984).
4. 69-73 911 hub. (1974-1989 hubs require 5mm spacers but are for hub centric wheels)
just my $0.02
John/Clay,
very informative post. Can you confirm what type of 944 axles can be used and answer a few more questions.
I think there are 3 or 4 different types based around differnet models and years. The Performance Products part number in an earlier post seems to match up with '87-'89 Turbo and '89-'91 S2.
Are these the only shafts that will work or can the shafts of the earlier 944 or 944 S be used ?
Do you also need to use the stub shaft from this same Turbo/S2 drive shaft or are the are stub shafts from the different 944 drive shafts interchangeable ?
According to the same Performance Products listing there were different 944 shafts for :-
1) '83-'85 944
2) '85-'88 944/944S/924S & '86 Turbo
3) '87-'89 Turbo & '89-'91 S2
Can anyone confirm exactly which part numbers (preferrably the Porsche part number) is required in this conversion ?
From what I have understood of the previous posts on here the other parts required are listed below -
2x '76 911 (915 transmission) 6 bolt, coarse spline drive flanges.
2x '69-'73 911 hub flanges with wheel bolts
2x '75-'84 911 stub axle 6-bolt OR 944 stub axle type TBC above (the 911 stub axle is a 'nice to have' if you don't want to machine down the hubs)
Can someone confirm the Porsche part numbers for these parts as well to make the search for parts a little similier.
Many thanks - if this set up works as described then it sounds fantastic.
Andrew
The 944 axles are too long by about 3/4". There are some that are much shorter. I used machined 914/4 axles per a post I found here. Assembled very nicely using new 944 cvs from parts heaven. $84 each. Do a search for 944/911 axles -original date 8/25/06 by Sir Andy. Big Parts needed 915 coarse spline trans flange-parts heaven or easy $75 each, 911 6 bolt 100mm stubs-parts heaven $50 each, early 911 (69-73 I think) stubs. Good machinist. Do not use 944 stubs or you'll have to make/run a spacer. No, I have not installed these in my car yet but the stubs/flanges are identicle dimensionaly where it counts to the 4 parts.
Aaron, are we EVER going to see this car on the road again???
Excellent articles and could not be more timely. This article should be made a classic thread.
Aaron, eat your heart out!!! I have two transaxle drive flanges in my parts bin AND will be using them in making the conversion as per this thread.
To make the early 911 hub concentric fitting, I will probably have a spacer machined to go between the wheel spacer/ adaptor and into the hub inner flange. One side concentric; other with machined lip.
I like the idea of using 944 half shafts without spacers as are required when using 911 half shafts. What year and model 944 half shafts are used in making this thread conversion?
I also like the idea of the 100mm 944 CV joints.
Steve Hurt
John/Clay,
very informative post. Can you confirm what type of 944 axles can be used and answer a few more questions.
I think there are 3 or 4 different types based around differnet models and years. The Performance Products part number in an earlier post seems to match up with '87-'89 Turbo and '89-'91 S2.
Are these the only shafts that will work or can the shafts of the earlier 944 or 944 S be used ?
Do you also need to use the stub shaft from this same Turbo/S2 drive shaft or are the are stub shafts from the different 944 drive shafts interchangeable ?
According to the same Performance Products listing there were different 944 shafts for :-
1) '83-'85 944
2) '85-'88 944/944S/924S & '86 Turbo
3) '87-'89 Turbo & '89-'91 S2
Can anyone confirm exactly which part numbers (preferrably the Porsche part number) is required in this conversion ?
From what I have understood of the previous posts on here the other parts required are listed below -
2x '76 911 (915 transmission) 6 bolt, coarse spline drive flanges.
2x '69-'73 911 hub flanges with wheel bolts
2x '75-'84 911 stub axle 6-bolt OR 944 stub axle type TBC above (the 911 stub axle is a 'nice to have' if you don't want to machine down the hubs)
Can someone confirm the Porsche part numbers for these parts as well to make the search for parts a little similier.
Many thanks - if this set up works as described then it sounds fantastic.
Andrew
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