Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
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.
 

Welcome Guest ( Log In | Register )

 
 Reply to this topicStart new topic
> front brake stuff, struts/rotors/calipers
dmenche914
post Nov 13 2005, 12:07 AM
Post #1


Senior Member
***

Group: Members
Posts: 1,212
Joined: 27-February 03
From: California
Member No.: 366
Got some questions on front brakes. The catalogs list both thru 1972 and post 1972 parts for rotors, pads, calipers and the ball joint. I assume the spindle forging is also different at the 72/73 change. Is this true?

Can later calipers be put on an early car and if so, what needs to be changed?

i have an early car, and found the brake calipers i want to use do not fit, they rub on the rotor. The calipers are from a1974 car.

What can be done with mix and match front brakes?


I also have some adjustable front shocks, can they be installed on my early spindle? (they are currently on a late spindle)

Are the adjustable front shocks a huge advantage over the non-adjustable?


thanks
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Eric_Shea
post Nov 13 2005, 01:05 AM
Post #2


PMB Performance
***************

Group: Admin
Posts: 19,275
Joined: 3-September 03
From: Salt Lake City, UT
Member No.: 1,110
Region Association: Rocky Mountains
Struts, Rotors, Calipers... all unique to your car. The offset is different. I don't know if anyone has the answer as to why they changed but, I'm taking a stab at VW parts being made and purchased in bulk. It was probably cheaper for them to retool and change the offset slightly and get a better price on the calipers if they bought a more common off the shelf variety. Both the early and the late calipers have VW cast in them so... that may not be the case. Just a WAG. DaveP probably has that answer.

You'll need to get some early front calipers for that one. The calipers you need will be distinguished by single bleeder and Ribe (star pattern) through bolts with 11mm nuts on the ends. Those are the early calipers.

There may be some type of BMW adaptation for the 70-72's but I'm not an expert on that stuff. I have a set of the 320i calipers that I just finished and I don't quite know what to do with them. I was going to post them on a Beemer board but... to lazy I guess.

The adjustable strut inserts will fit just fine. I'm assuming they're Koni's and they should make a very nice improvement.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
r_towle
post Nov 13 2005, 10:52 AM
Post #3


Custom Member
***************

Group: Members
Posts: 24,574
Joined: 9-January 03
From: Taxachusetts
Member No.: 124
Region Association: North East States
This is just my two cents...for what that is worth...probably less than 2 cents...

But...

I ended up replacing the front strut/spindle, rotors . I ended up doing this because the connection between the strut and the ball joint on the earlier cars had a tendancy to oval out over time...The new style strut/spindle has a better locking mechanism for the ball joint...of course they are different ball joints too..

The calipers, oddly enough fit fine from the early car to the later strut tube...I checked it out, they are centered and perform fine...

It was a pain, but I would do it again in a second...the older version is dangerous IMHO.

Rich
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Eric_Shea
post Nov 13 2005, 05:01 PM
Post #4


PMB Performance
***************

Group: Admin
Posts: 19,275
Joined: 3-September 03
From: Salt Lake City, UT
Member No.: 1,110
Region Association: Rocky Mountains
QUOTE
The calipers, oddly enough fit fine from the early car to the later strut tube...I checked it out, they are centered and perform fine...


Boy... I REALLY don't want to get into a brazing vs. welding thing again but, that would be very odd indeed. (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif)

The offset is clearly different. (IMG:http://www.914world.com/bbs2/html/emoticons/huh.gif)


Attached image(s)
Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
davep
post Nov 13 2005, 05:04 PM
Post #5


914 Historian
*****

Group: Benefactors
Posts: 5,143
Joined: 13-October 03
From: Burford, ON, N0E 1A0
Member No.: 1,244
Region Association: Canada
The change from 72 to 73 style was to allow thicker pads to be used. This made the calipers wider. For whatever reason they decided on a whole new setup. Then they also added the centering ring on the rotor, so there were three rotor styles. One almost never sees the mid style rotor which is a good thing in one respect since it closely resembles the early style but is not interchangeable with it.

It is far better to use all the components as a set without trying to mix and match. Even the brake lines are different.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Eric_Shea
post Nov 13 2005, 05:53 PM
Post #6


PMB Performance
***************

Group: Admin
Posts: 19,275
Joined: 3-September 03
From: Salt Lake City, UT
Member No.: 1,110
Region Association: Rocky Mountains
These would bolt right on (extremely shameless plug for my classified ad) (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif)


Attached image(s)
Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Eric_Shea
post Nov 13 2005, 07:31 PM
Post #7


PMB Performance
***************

Group: Admin
Posts: 19,275
Joined: 3-September 03
From: Salt Lake City, UT
Member No.: 1,110
Region Association: Rocky Mountains
Too late (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
dmenche914
post Nov 13 2005, 07:31 PM
Post #8


Senior Member
***

Group: Members
Posts: 1,212
Joined: 27-February 03
From: California
Member No.: 366
So early calipers and rotors will work on the later struts?


thanks
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
davep
post Nov 13 2005, 08:50 PM
Post #9


914 Historian
*****

Group: Benefactors
Posts: 5,143
Joined: 13-October 03
From: Burford, ON, N0E 1A0
Member No.: 1,244
Region Association: Canada
QUOTE (dmenche914 @ Nov 13 2005, 05:31 PM)
So early calipers and rotors will work on the later struts?

I don't think so, and wouldn't try it, but I could be proven wrong.
The offsets should be all wrong.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Eric_Shea
post Nov 13 2005, 08:59 PM
Post #10


PMB Performance
***************

Group: Admin
Posts: 19,275
Joined: 3-September 03
From: Salt Lake City, UT
Member No.: 1,110
Region Association: Rocky Mountains
(IMG:http://www.914world.com/bbs2/html/emoticons/confused24.gif)

I'm with Dave... I don't know but, I know the bearings are the same so... that could be the reason it worked with Rich. I know for a fact that a late rotor will not work with an early caliper.

Maybe someone will chime in here that has put an early rotor and caliper on late struts... (maybe someone already has... Rich?) all my cars have Koni 911 struts on them.

I have a set of late struts if you're looking (still tring to clean out the garage). (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · 914World Garage · Next Newest »
 

Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 

Display Mode: Standard · Switch to: Linear+ · Switch to: Outline

Track this topic · Email this topic · Print this topic · Subscribe to this forum

- Lo-Fi Version Time is now: 17th May 2024 - 04:12 PM
Invision Power Board v9.1.4 © 2024  IPS, Inc.
All rights reserved 914World.com © since 2002
914World.com is the fastest growing online 914 community!
We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ...