 911 axle lengths, are there two?, for Boxster transaxle to 911/944 hubs |
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| neo914-6 |
  Nov 4 2007, 01:40 PM
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#1
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neo life  Group: Members Posts: 5,086 Joined: 16-January 03 From: Willow Glen (San Jose) Member No.: 159  |
which years?
- Shorter axles (18.5") used on 911's w/ 915 tranny - Longer axles (20.25") used on the Carrera or SC w/915 tranny They must be 25 spline, not 33 also found in late 944 S2 and turbo. FYI, the Boxster output flanges are offset of center thus the need for unequal length axles... |
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| PRS914-6 |
Nov 4 2007, 07:58 PM
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Excellence Magazine Project 914 3.6 Group: Retired Members Posts: 1,278 Joined: 20-May 06 From: Central California Member No.: 6,031 Region Association: None  |
Hmmm.....I just measured an axle off a 77 911 with 915 and it was 19 1/8
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| ajracer |
Nov 4 2007, 10:18 PM
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Member Group: Members Posts: 204 Joined: 18-April 04 From: Toronto, Canada Member No.: 1,945 |
YES, I must say I agree with Felix,
since those are the exact measurements of the axles I used in my conversion *(with a Boxster tranny) Allan |
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| Aaron Cox |
Nov 4 2007, 10:54 PM
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#4
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
does the axle length change in relation to aluminum trailing arms vs steel trailing arms?
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| neo914-6 |
Nov 5 2007, 01:56 AM
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#5
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neo life Group: Members Posts: 5,086 Joined: 16-January 03 From: Willow Glen (San Jose) Member No.: 159 |
yes those two are Allan's measurements but haven't found either. The pair of '84 911 axles I recently bought are 19.5" end to end of the axle. It appears to fit the right side but also seems to have a 1/2" longitudinal CV tolerance or else the CV's are badly worn. The left needs to be a 1/2 shorter but I haven't fit it up yet with the stub axle. I have to clean off some of the powdercoating on the hub first. The guy at Parts Heaven said there is only one length axle for the 911. Maybe the other axle must come from a late 944 with 25 spline.
I've purchased 8 axles in my search, most of which I can't use. (One new 930 with 28 spline and big CV's, a pair of early 911 with big CV's, two different length 944 both with 33 spline, and a Boxster axle for auto gearbox). BTW, the 911 100mm 6 bolt CV bolts to the Boxster output flange, no need for 944 CV's. |
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| sixnotfour |
Nov 19 2007, 09:53 PM
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#6
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914 Wizard Group: Members Posts: 10,645 Joined: 12-September 04 From: Life Elevated..planet UT. Member No.: 2,744 Region Association: Rocky Mountains
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check here,
http://www.swayaway.com/Porsche.php |
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| roadster fan |
Nov 20 2007, 11:36 AM
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#7
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Project Frankenstein !!!!!!!! Group: Members Posts: 1,009 Joined: 24-November 05 From: Aptos, CA Member No.: 5,184 Region Association: Northern California |
Hey Felix,
I am also very interested in what you find out about the cv shafts. Here is a link for custom axles if you need to go that way. I had a link to a guy in the Sacramento area also but can't find right now. Driveshaft Shop The are starting to produce axles for Porsche TT's, look to have experience in swaps also. Jim |
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| neo914-6 |
Nov 20 2007, 03:02 PM
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#8
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neo life Group: Members Posts: 5,086 Joined: 16-January 03 From: Willow Glen (San Jose) Member No.: 159 |
QUOTE(roadster fan @ Nov 20 2007, 09:36 AM)  Hey Felix, I am also very interested in what you find out about the cv shafts. Here is a link for custom axles if you need to go that way. I had a link to a guy in the Sacramento area also but can't find right now. Driveshaft Shop The are starting to produce axles for Porsche TT's, look to have experience in swaps also. Jim Jim, Allan found two lengths with 25 splines that worked for him but I haven't been able to find them. The axles I found have the correct CV and unless I find a shorter axle with 25 splines, I will have to shorten the left side. If you have the 6 speed, your output flange may be different. Measure the hole pattern and CV diameter. Allan and I are using the early 5-speed which is Audi based. My current concern is that my trailer arm toe may be off so I don't want to modify the axle until it is aligned. I think any local machine shop that modifies driveshafts can shorten the axle... |
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