Update,
Finally got a digital caliper from OSH (I love it!) to measure my pile of CV's/axles.
I'm beginning to "live" at OSH again, Michael N can attest to that.
Worked a little on the interior, mounted the leather sun visors, figured out which parts I need and which parts to powdercoat or plate.
Instead of a modifed 964/914 pedal cluster, I will use a 914 brake only cluster, 986 clutch, and Audi S4 e-throttle pedals.
Investigated what I'll need for the hydraulic clutch lines. I bought an OEM hard line from the gearbox slave cylinder and a tubing bender to get it to fit my car. I may need to have a flex line made near the pedal master clutch cylinder.
Worked on the rear axles fitment. The car came with Rich Johnson flanges which will be replaced with a completely modified arm setup with 911/944 CV's, and 944 hubs, see the
Mueller thread.
Here are my measurements and web data, with some tolerance for measuring threaded holes. The spreadsheet is not complete but tells me the 944 CV and will bolt up to the Boxster output flanges. Sonu (914 1.8T) used pre 85's so maybe my measurements aren't accurate or they were "close enough". In fact he borrowed my axles/CV's to fit them to his Audi conversion. Previous helpful threads were:
NEED AXLE INFO... 944 turbo axle and CV information needed How to convert quattro 6speed to FWD? Project 914 1.8TCV Diameter
94 mm = 3.7" 914-4/6
100mm = 3.94" 911 to 85*, 6 bolt 911 Carrera models 84-89
100mm = 3.94" 944
100mm = 3.94" 986 (Boxster)108mm = 4.25" 911 from 85, 930, SC?, 4 bolt 2 pin
*In 1985 Porsche changed the outer diameter of the 911 Carrera CV joint from 100mm to 108mm (same as 911 Turbo).
CV Hole pattern
77.5mm = 3" 914-4/6
85.6mm = 3.4" 944
85.6mm = 3.4 911 84-?
85.6mm = 3.4 986 (output flange)94mm = 3.7" 911 to 85
94mm = 3.7" 986
94mm = 3.7" 930
interesting Notes on Paragon Products:
CV Joint Kit Product Code: PP911.332.030.01 $88.16
Fits 911 84-94, 911RSA, 930, 965, 993C2/4, 996C2/4,
Boxster 97-04CV Joint Kit -
25 splineProduct Code: PP951.332.901.00 $100.00
Fits
911 89-84 (964), 944S2, 944 Turbo 87-91, 968, BoxsterFor 944:
Part # PP944.331.901.00 & 944.331.903.00 fit up to chassis #95HN151524
Part # PP951.332.901.00 & 951.332.903.00 fit from chassis #95HN151524
need to distinquish 911:
65-75
75-84
85-89
85-89 Turbo
CV width
31mm = 914 CV
32mm = 914-6/911
35mm = 944 CV
29mm = 986
40.19mm = 930
Spline count
33 = 914
33 = 914-6/911
33 = 944 pre 86
25 = 944 Turbo 1986 - 1991
25 = Porsche Carrera/4 1989 - 1994 25 = 986 Boxster 1997 - 2005
28 = 911 early to?
28 = 930
GKN Automotive CV Joint Kit
App: 1983-1989 Porsche 944 Base & S & Turbo
Brand: GKN Automotive
Part #: W0133-1611367
Notes: 33 Spline - Inner & Outer. 33 Spline.
GKN Automotive CV Joint Kit
App:
1987-1991 Porsche 944 S2 & Turbo
Brand: GKN Automotive
Part #: W0133-1611068
Notes: 25 Spline -
Inner & Outer. 25 SplinePelican Parts
CV Joint Kit With Boot
App: 924S/944/944S All, 944 Turbo (1986-87)
Brand: Loebro
Part #: 944-331-901-00-M60
CV Joint Kit With Boot,
App: 944S2/968 (1989-95), 944 Turbo (1988-89, from ch# 95HN151525)
Brand: Loebro
Part #: 951-332-901-00-M60
Febi CV Joint Bolt
App: 1983-1991 Porsche 944 S2
Brand: Febi
Part #: W0133-1644056
Notes:
8x50mm - 12 Pointshaft diameter at spline
Spline shaft dia
?mm = 914
29mm = 914-6/911 early
25mm = 944
?mm = 986
29mm = 930
Axle shaft length
?mm = ?" 914
19.5" 911 '84 early16" 944 #1
" 944 #2
~21" 986
~30" 930
neo914 shaft lengths needed (measured w/o stub axle flange)
Right 19.5"
Left 20.25"recent info from Alan:
QUOTE
1/ My tranny is a 1997 - 1999 Boxster tranny (but I understand all Five speed Boxster are the same tranny
just wanted to mentioned to be safe.
2/ The C/V joints are "key" and they must be the smaller ones which attach with Six Bolts. (8mm)
3/ The C/V's it appears are the same for all the later model 1986+ Porsche 944's and are coarse splines
4/ (I mis-quoted to you earlier regarding which were the longer and shorter axles; seems I got them backward)
AXLE info
- Shorter axles (18.5") were used on 911's which used the 915 tranny
- Longer axles (20.25") were used on the Carrera or SC also using 915 tranny.
Also you can check with your Porsche shop / dismantlers and they can confirm the diameters for the C/V's should be 108 mm.
The 911 axles I have the larger 4 bolt 2 pin type CV instead of the smaller 6 bolt CV. Looks like I'll be shopping for 911 axles again...