 Why do replacement CV joint boots have six holes instead of the four like original |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
| TonyA |
 Feb 4 2024, 10:10 AM
Post
#1
|
|
Nachmal  Group: Members Posts: 695 Joined: 17-November 16 From: Hilltown PA Member No.: 20,596 Region Association: North East States 
 |
Why do replacement CV joint boots have six holes instead of the four like original.
Is it so the grease has a spot to leak out in a few years and splash all over. I am getting pissed at aftermarket stuff not made right and I find this out six months after purchasing. Why are there six holes. In my quest for originality I WANT IT RIGHT (I know most don't give a crap) but I do! My rant for today thanks for watching. |
   |
 
|
  |
Replies
| frank_c |
May 11 2026, 11:14 PM
Post
#2
|
|
Member Group: Members Posts: 89 Joined: 29-December 24 From: Austin, TX Member No.: 28,542 Region Association: None |
I'm reviving this thread to see if anyone has found a source for CV Joint boots with the 4-bolt flanges, or a better solution for the 6-bolt boots?
I recently replaced both axles/CV joints with the pre-built axles from PMB, and the boots are slinging the grease out. The grease appears to be coming mostly from the empty holes in the boot flange where the roll pins are located. I do have a pair of the old 4-hole boots that I removed from the old axles that I plan to install on the inner joints so that I can keep an eye on them, but I need to find a solution for the two outer joints. I was wondering if anyone has tried drilling and tapping the 10mm roll pin holes in the CV Joint for a short 12mm bolt at the boot end of the CV Joint - keeping the roll pin at the other end? This would not only seal the empty boot flange hole, but also form a tighter seal of the boot flange against the CV Joint (and allow the use of 3 retainer plates instead of 2). But, since CV Joints are hardened steel, I did not know if this is something that would require a machinist. |
|
|
|
| DennisV |
May 12 2026, 06:31 AM
Post
#3
|
|
Senior Member Group: Members Posts: 918 Joined: 8-August 20 From: Santa Rosa, CA Member No.: 24,575 Region Association: Northern California
|
QUOTE(frank_c @ May 11 2026, 10:14 PM)  I'm reviving this thread to see if anyone has found a source for CV Joint boots with the 4-bolt flanges, or a better solution for the 6-bolt boots? I disassembled my originals. Had the metal parts replated. Put on new rubber bellows.  |
|
|
|
| Shivers |
May 12 2026, 10:16 AM
Post
#4
|
|
Senior Member Group: Members Posts: 3,383 Joined: 19-October 20 From: La Quinta, CA Member No.: 24,781 Region Association: Southern California |
QUOTE(DennisV @ May 12 2026, 05:31 AM) QUOTE(frank_c @ May 11 2026, 10:14 PM) I'm reviving this thread to see if anyone has found a source for CV Joint boots with the 4-bolt flanges, or a better solution for the 6-bolt boots? I disassembled my originals. Had the metal parts replated. Put on new rubber bellows. I have a set of these, thanks. |
|
|
|
Posts in this topic
TonyA Why do replacement CV joint boots have six holes instead of the four like original Feb 4 2024, 10:10 AM
914Sixer The 914 boot is the same size as the stock VW Bug ... Feb 4 2024, 10:26 AM mate914
Why do replacement CV joint boots have six holes ... Feb 4 2024, 10:31 AM
TonyA
Why do replacement CV joint boots have six holes... Feb 4 2024, 12:25 PM burton73 This is a picture from web. How would a person fix... Feb 4 2024, 10:47 AM 73-914 A reproduction is by definition not original Feb 4 2024, 11:48 AM TonyA Excuse me I mean original looking. Feb 4 2024, 12:23 PM MartyYeoman Add a little piece of HVAC foil sealing tape to th... Feb 4 2024, 12:55 PM fixer34 You got me wondering since it has been a LONG time... Feb 4 2024, 01:10 PM 914Sixer Thinking a plastic plug would accomplish closing t... Feb 4 2024, 01:12 PM fixer34
Thinking a plastic plug would accomplish closing ... Feb 4 2024, 04:39 PM pek771 The diameter of the boot is larger than the CV joi... Feb 4 2024, 09:14 PM bkrantz
The diameter of the boot is larger than the CV jo... Feb 4 2024, 09:26 PM jim_hoyland So, what is the best solution when replacing ? Feb 5 2024, 07:33 AM pek771 I’m going to put a bead of silicone around the p... Feb 5 2024, 07:52 AM DRPHIL914 Why can't someone make a correct design reprod... Feb 5 2024, 07:54 AM 76-914 These are the woes of owning a 50 year old car in ... Feb 5 2024, 09:07 AM MikeK Pardon my ignorance, but which six holes are you r... Feb 5 2024, 09:31 AM DRPHIL914
Pardon my ignorance, but which six holes are you ... Feb 5 2024, 09:54 AM VaccaRabite Because its a Beetle part that EMPI is selling to ... Feb 5 2024, 11:50 AM bkrantz
Because its a Beetle part that EMPI is selling to... Feb 5 2024, 07:43 PM MikeK Thanks for the enlightenment.
Can the stub axles... Feb 5 2024, 07:35 PM Olympic 914 It seems even the new Porsche ones have six holes.... Feb 5 2024, 08:28 PM pek771 looks like the new cv joints are 90 mm od, and the... Feb 6 2024, 06:52 PM 914Sixer Here is your answer. Price is STUPID. Then you a... May 12 2026, 06:13 AM brant HVAC aluminum foil tape has been working fine for ... May 12 2026, 06:26 AM IronHillRestorations I like Marty’s idea of covering the holes from t... May 12 2026, 08:52 AM frank_c Thanks for the responses.
I looked at my old 4-b... May 12 2026, 09:15 AM Shivers Dang I have two :) May 12 2026, 12:28 PM |
2 User(s) are reading this topic (2 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 12th May 2026 - 02:54 PM |
Invision Power Board
v9.1.4 © 2026 IPS, Inc.