 Rear 5-Lug with 944 Parts, PART II, update & pics ... |
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| SirAndy |
  Aug 6 2005, 06:01 PM
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#1
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Resident German  Group: Admin Posts: 41,641 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California  |
so it looks like there's going to be some minor machining required after all.
turns out, the 944 Turbo CVs are 4mm thicker than the 914 CVs which means the 914 axle shaft has to be machined down a bit for them to fit. see pictures below ... (IMG:http://www.914world.com/bbs2/html/emoticons/smash.gif) Andy 1 - 914 shaft on top, 944 shaft below (IMG:http://www.914world.com/bbs2/uploads/post-11-1123372532.jpg) 2 - closeup, for difference, see table below ... (IMG:http://www.914world.com/bbs2/uploads/post-11-1123372553.jpg) 3 - 4 mm needs to be removed from the 914 shaft to accomodate the 944 CV (IMG:http://www.914world.com/bbs2/uploads/post-11-1123372569.jpg) 4 - 914 CV on the left, 944 CV on the right (IMG:http://www.914world.com/bbs2/uploads/post-11-1123372588.jpg) 5 - 914 CV on the left, 944 CV on the right (IMG:http://www.914world.com/bbs2/uploads/post-11-1123372608.jpg) Dimensions: 914 Shaft, dia. = 25mm, length = 514mm 944 Shaft, dia. = 26mm, length = 540mm 914 CV, dia. = 94mm, width = 31mm 944 CV, dia. = 100mm, width = 35mm |
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| TravisNeff |
Aug 6 2005, 06:11 PM
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#2
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914 Guru Group: Members Posts: 5,082 Joined: 20-March 03 From: Mesa, AZ Member No.: 447 Region Association: Southwest Region 
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Is this per Clay's conversion post? Good info!
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| SirAndy |
Aug 6 2005, 06:15 PM
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#3
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Resident German Group: Admin Posts: 41,641 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
yes, this is based on clay's parts list ... it would be great if you could use the 944 shaft, but it's over 1" longer so that won't work. the 914 shaft is only 1mm thinner than the 944 turbo shaft, so i'm not worried about the strength of the stock shaft, plus, it comes with the right length built in! (IMG:http://www.914world.com/bbs2/html/emoticons/smash.gif) Andy |
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| TravisNeff |
Aug 6 2005, 06:18 PM
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#4
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914 Guru Group: Members Posts: 5,082 Joined: 20-March 03 From: Mesa, AZ Member No.: 447 Region Association: Southwest Region
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Looks like it will help with a little extra toe in, lol
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| ClayPerrine |
Aug 6 2005, 08:28 PM
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#5
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Life's been good to me so far..... Group: Admin Posts: 15,465 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille
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Andy,
I found out the same thing. I took the shafts to Wes and he machined a groove below the splines. Plus he says to leave out the washer below the cv joint. Sorry, been so busy getting my car together I forgot to post this. |
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| rhodyguy |
Aug 7 2005, 09:28 AM
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#6
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,080 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
missed clay's post. what has to be done to the output flange on the trans? is this proceedure in the classic thread section?
k |
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| Aaron Cox |
Aug 7 2005, 09:50 AM
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#7
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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 |
in this order-
915 coarse splined out put flanges + 944 CV + 914 Axle + 944 CV + 944 Stub Axle + Pre 74 911 Rear Hub for a true 5 lug setup (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif) |
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| dakotaewing |
Aug 7 2005, 10:08 AM
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#8
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Senior Member Group: Members Posts: 1,160 Joined: 8-July 03 From: DeSoto, Tx Member No.: 897 Region Association: Southwest Region
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Any chance of the shafts stripping the interior of the 944 CV due to the 1mm difference?
Or am I reading this wrong? |
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| eric914 |
Aug 7 2005, 12:13 PM
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#9
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Member Group: Members Posts: 381 Joined: 28-January 04 From: Waynesville OH Member No.: 1,613 Region Association: Upper MidWest
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Are the bolt hold patterns the same between the 914 CV and the 944 CV? If so, with a small amount of work on the 1\2 shaft we have a source for replacement CV joints.
Eric |
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| jonwatts |
Aug 7 2005, 12:30 PM
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#10
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no rules, just wrong Group: Benefactors Posts: 2,321 Joined: 13-January 03 From: San Jose, CA Member No.: 141  |
That's how I read it too, so I have the same question. Forget the machine work Andy, all you need is a -4mm shim (IMG:http://www.914world.com/bbs2/html/emoticons/blink.gif) |
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| SirAndy |
Aug 7 2005, 12:40 PM
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#11
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Resident German Group: Admin Posts: 41,641 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
huh? NOOOOOO .... the shaft itself is 1mm bigger in dia. but the SPLINE IS THE SAME where the CVs are mounted ... (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif) 944 CV's slide right onto the 914 shaft, same spline and all. if you look at the closeup pics you can see how both shafts taper off after the spline part down to the actual thickness of the shaft. so the 1mm difference does not matter ... as for the bolt pattern, NO it's NOT the same, 944 uses 6 bolts (like the 911) and the 914 uses 4 bolts ... that's why you need the 911 output flanges and the 944 stub axle, like aaron posted ... (IMG:http://www.914world.com/bbs2/html/emoticons/smash.gif) Andy |
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| ChrisFoley |
Aug 7 2005, 12:40 PM
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#12
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I am Tangerine Racing Group: Members Posts: 7,925 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None
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The splines appear to be the same. The diameter difference mentioned is the main portion of the shaft, not the splined area.
The bolt hole patterns are not the same. You need different output flanges and stub axles for these CVs to work on a 914 as noted in Aaron's post. |
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| SirAndy |
Aug 7 2005, 12:41 PM
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#13
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Resident German Group: Admin Posts: 41,641 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
not yet as i'm obviously still working on it ... i'm taking lots of (blurry) pictures along the way which i will put into a single thread once i'm done ... (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif) Andy |
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| ChrisFoley |
Aug 7 2005, 12:42 PM
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#14
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I am Tangerine Racing Group: Members Posts: 7,925 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None
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Jinx, you owe me a coke. (IMG:http://www.914world.com/bbs2/html/emoticons/laugh.gif) |
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| SirAndy |
Aug 7 2005, 12:45 PM
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#15
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Resident German Group: Admin Posts: 41,641 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
(IMG:http://www.914world.com/bbs2/html/emoticons/laugh.gif) will do ... |
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| blabla914 |
Aug 7 2005, 02:59 PM
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#16
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I like primer Group: Members Posts: 321 Joined: 1-March 04 From: Connecticut Member No.: 1,740 Region Association: None
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Glad to see somebody else is using Clay's info and working on this swap. I'm not as far along as Andy, but I did find out some stuff from my local parts guy. There were some questions on Clay's post about which 944 CV joints to use and that somewhere around '86-'87 944 CV's changed. Here's what I found out.
914-4 CV joint and axle have 33 splines (I counted mine to verify) According to the parts book: '86 AND EARLIER 944 NA and turbo also use 33 spline axles and cv's The 33 spline 944 CV joint part number is 944 331 901 00 '87 AND LATER 944 turbo ONLY use a 25 spline axle and CV joint The 25 spline late 944 turbo part number is 951 332 901 00 Make sure you get the 33 spline joints. Kelly |
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| SirAndy |
Aug 7 2005, 07:20 PM
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#17
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Resident German Group: Admin Posts: 41,641 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
i've counted 32 but i think i counted the grooves instead. i did post that in the "other" thread and will add that to the final "how to" when i'm done. there's only two different 944 CVs and the difference in splines is pretty easy to spot ... (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif) Andy |
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| SirAndy |
Aug 7 2005, 07:23 PM
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#18
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Resident German Group: Admin Posts: 41,641 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
UPDATE on the machining of the 914 shaft ...
here's Mueller Meister in action: (IMG:http://www.914world.com/bbs2/html/emoticons/smash.gif) (IMG:http://www.914world.com/bbs2/uploads/post-11-1123463973.jpg) turning them down: (IMG:http://www.914world.com/bbs2/html/emoticons/sawzall-smiley.gif) (IMG:http://www.914world.com/bbs2/uploads/post-11-1123463990.jpg) and the end-result: (IMG:http://www.914world.com/bbs2/html/emoticons/smilie_pokal.gif) (IMG:http://www.914world.com/bbs2/uploads/post-11-1123464006.jpg) fits like a glove ... (IMG:http://www.914world.com/bbs2/html/emoticons/beerchug.gif) Andy |
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| Gary |
Aug 7 2005, 07:32 PM
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#19
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Senior Member Group: Members Posts: 744 Joined: 12-January 03 From: Mount Airy, MD Member No.: 134 Region Association: MidAtlantic Region
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Cool thread! Appreciate your sharing the info.
Did the stubs stay the same throughout the 944 model years? |
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| Mueller |
Aug 7 2005, 07:44 PM
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#20
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None
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wow...I have more hair than I thought (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)
i was expecting it to be harder to cut those axles, but it was not too bad.... |
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