 Spindle size, Spindle size |
|
|
|
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. |
|
|
  |
| 74ravenna |
 Dec 8 2025, 05:34 AM
Post
#1
|
|
Member  Group: Members Posts: 479 Joined: 19-October 14 From: nh Member No.: 18,032 Region Association: North East States 
 |
I recently bought new rotors for my 74 but they are too small in diameter so they won't slide all the way on. They were purchased based on model year so I'm confident that I was sent the proper size. The seller suggested that the spindles aren't original so I've tried to find the diameter of a 74 spindle but can't find it anywhere. I was sure my Haynes would have it listed, but no luck there. Google had nothing as well. If anyone here has that info I would appreciate it. Thanks.
|
   |
 
|
| bdstone914 |
Dec 8 2025, 08:12 AM
Post
#2
|
|
bdstone914 Group: Members Posts: 5,211 Joined: 8-November 03 From: Riverside CA Member No.: 1,319 |
QUOTE(74ravenna @ Dec 8 2025, 05:34 AM)  I recently bought new rotors for my 74 but they are too small in diameter so they won't slide all the way on. They were purchased based on model year so I'm confident that I was sent the proper size. The seller suggested that the spindles aren't original so I've tried to find the diameter of a 74 spindle but can't find it anywhere. I was sure my Haynes would have it listed, but no luck there. Google had nothing as well. If anyone here has that info I would appreciate it. Thanks. All 914 struts have the same spindles size. The early vs late struts have a different offset for the caliper Mounting. 911 struts have a larger spindle. What is the brand and part number marked on the package and what part number did you order. .abd chance you have 5 lug 811 struts |
|
|
|
| 74ravenna |
Dec 8 2025, 09:03 AM
Post
#3
|
|
Member Group: Members Posts: 479 Joined: 19-October 14 From: nh Member No.: 18,032 Region Association: North East States
|
I will recheck the part numbers on what I was sent versus what I ordered in a bit. The seller did confirm what I ordered was/is correct for my MY car and what they shipped was correct and then suggested the possibility of different spindles. I will double check though. Thanks for your help.
|
|
|
|
| ejm |
Dec 8 2025, 10:34 AM
Post
#4
|
|
I can see the light at the end of the tunnel Group: Members Posts: 2,712 Joined: 3-February 03 From: Massachusetts Member No.: 224 Region Association: None |
What about the wheel bearings? New rotors generally don't come with bearings. Did you get new ones or swap them from the old rotors?
|
 |
|
| 74ravenna |
Dec 8 2025, 04:23 PM
Post
#5
|
|
Member Group: Members Posts: 479 Joined: 19-October 14 From: nh Member No.: 18,032 Region Association: North East States
|
I got new bearings to go with the new rotors.The bearings are BR8 manufactured by SKF. 4 lug.
|
|
|
|
| 74ravenna |
Dec 8 2025, 04:27 PM
Post
#6
|
|
Member Group: Members Posts: 479 Joined: 19-October 14 From: nh Member No.: 18,032 Region Association: North East States
|
I just noticed that my original post says I bought new rotors that don't fit but that is incorrect. I bought new bearings that don't fit. Sorry.
|
|
|
|
| rjames |
Dec 8 2025, 05:24 PM
Post
#7
|
|
I'm made of metal Group: Members Posts: 4,413 Joined: 24-July 05 From: Shoreline, WA Member No.: 4,467 Region Association: Pacific Northwest
|
If the bearings you bought are correct for your spindles, it's not uncommon for them not to want to slide on all the way if you don't have the bearing lined up perfectly straight when trying to mount the rotor assembly.
If in doubt, use calipers to measure the diameter of the spindle an the ID of the bearing. |
|
|
|
| 74ravenna |
Dec 9 2025, 08:00 AM
Post
#8
|
|
Member Group: Members Posts: 479 Joined: 19-October 14 From: nh Member No.: 18,032 Region Association: North East States
|
QUOTE(rjames @ Dec 8 2025, 06:24 PM) If the bearings you bought are correct for your spindles, it's not uncommon for them not to want to slide on all the way if you don't have the bearing lined up perfectly straight when trying to mount the rotor assembly. If in doubt, use calipers to measure the diameter of the spindle an the ID of the bearing. I will go this route, it only makes sense. I don't have calipers and that's why I haven't yet but I'll buy a set. The bearings stop sliding on with so much distance left to go, plus the fact that they both stop sliding on at the same spot on each side made me automatically think that they aren't correct for my spindles. This will be interesting. Thank you. |
|
|
|
| mepstein |
Dec 9 2025, 08:03 AM
Post
#9
|
|
914-6 GT in waiting Group: Members Posts: 20,283 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region
|
Show us a picture of your strut.
|
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 9th December 2025 - 11:40 AM |
Invision Power Board
v9.1.4 © 2025 IPS, Inc.