 CV Bolt Replacement, Best Practice and While I'm in There? |
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| Nogoodwithusernames |
 Jul 2 2020, 10:07 PM
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Member  Group: Members Posts: 295 Joined: 31-May 16 From: Sutter, CA Member No.: 20,051 Region Association: None  |
Was going to take the 914 out for a spin tonight (IMG:style_emoticons/default/driving.gif) and two streets from the house *POP* and engine free revs... Figured I broke an axle or something along those lines and sure enough drive side axle is no longer connected to the trans. Haven't dug in to find out if the bolts sheared or backed out but it needs fixing.
I'm planning on replacing all the CV bolts with the safety wire versions from 914 rubber and obviously safety wiring them. But should I locktite them? Antisieze? Neither? Figure I'd clean them and repack the grease, anything else while I'm under there? Might finally put the new shifter bushings I've had sitting around for eons... (Also how many are there? I think VW has 6 bolts per CV, same for our little NARP? *EDIT* 914 rubber says it right on their site, 16 total.) |
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| Bartlett 914 |
Jul 3 2020, 07:49 AM
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Advanced Member Group: Members Posts: 2,218 Joined: 30-August 05 From: South Elgin IL Member No.: 4,707 Region Association: Upper MidWest |
I too have been through this. I discovered the main culprit causing the CV's to work loose it the output flange on the transmission. What happens is when the CV works loose, the bolts pull on the threaded portion of the output flange. This makes the threaded spots higher than the rest of the flange. It may seem that the CV and the output flange are sitting flat to each other but they are not. If you remove the flange and chuck it in a lathe and make a "clean up" cut you will see the high spots are at the thread holes. Once this is clean and flat, screws and new Schorr washers are all that is needed. I use standard socked head cap screws
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Posts in this topic
Nogoodwithusernames CV Bolt Replacement Jul 2 2020, 10:07 PM
JamesM 4 bolts + 2 roll pins per CV joint.
Make sure you... Jul 3 2020, 02:08 AM
wndsrfr
4 bolts + 2 roll pins per CV joint.
Make sure yo... Jul 3 2020, 06:09 AM 914Sixer Run the 12.9 bolts instead of the stock ones. Use... Jul 3 2020, 06:49 AM ClayPerrine
Run the 12.9 bolts instead of the stock ones. Us... Jul 3 2020, 08:21 AM ericoneal How much torque?
Run the 12.9 bolts instead of ... Jul 3 2020, 03:20 PM 76-914
How much torque?
[quote name='ClayPerrine' post=... Jul 3 2020, 04:20 PM roblav1 If you're running the early 911 CV's with ... Jul 3 2020, 07:36 AM cuddy_k :agree:
Like many things on our cars, it all work... Jul 3 2020, 07:37 AM bdstone914 Clean the holes for the CV bolts. Grease affects t... Jul 3 2020, 07:50 AM preach
Clean the holes for the CV bolts. Grease affects ... Jul 3 2020, 01:39 PM mepstein
Clean the holes for the CV bolts. Grease affects... Jul 3 2020, 01:54 PM 76-914
[quote name='preach' post='2830669' date='Jul 3 2... Jul 3 2020, 04:18 PM 914_teener
[quote name='preach' post='2830669' date='Jul 3 ... Jul 4 2020, 05:39 PM cary My only addition. If you damage the hex socket in ... Jul 3 2020, 08:04 AM Mikey914 We stock the safety wire version and the Schoor wa... Jul 3 2020, 09:49 AM IronHillRestorations As long as you use new Schnorr washers, make sure ... Jul 3 2020, 11:19 AM michael7810 I think it’s a good idea to recheck the torque a... Jul 3 2020, 11:36 AM mepstein
I think it’s a good idea to recheck the torque ... Jul 3 2020, 11:45 AM 76-914 @914teener :rotfl: I don't know if that was a... Jul 4 2020, 07:01 PM Nogoodwithusernames Alright folks, I finally got around to getting the... Sep 27 2020, 02:37 PM Mikey914 You don’t have to pull it all, but if you are th... Sep 27 2020, 05:21 PM Ansbacher When dropping my engine recently I found my CV bol... Sep 27 2020, 06:16 PM |
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