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
> New PMB 914-6 Rear Calipers, Preproduction Info
914Sixer
post Jun 7 2024, 06:24 AM
Post #1


914 Guru
*****

Group: Members
Posts: 9,004
Joined: 17-January 05
From: San Angelo Texas
Member No.: 3,457
Region Association: Southwest Region
Saw this at PMB site, passing it along.


Attached thumbnail(s)
Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Graydingo
post Jun 7 2024, 07:26 AM
Post #2


Member
**

Group: Members
Posts: 52
Joined: 12-August 22
From: Las Vegas
Member No.: 26,768
Region Association: Southwest Region
Great price. With the GT vented choice, the caliper comes with the spacer installed. For the proper rear rotor, I'm reading old posts saying use an SC 911 vented rear rotor but I need to machine a bit off to clear?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
tailwind22
post Jun 7 2024, 07:46 AM
Post #3


Member
**

Group: Members
Posts: 89
Joined: 7-November 17
From: Moses Lake, WA
Member No.: 21,583
Region Association: Pacific Northwest
Yes the rotors need to be machined to reduce the diameter a bit. Had Eric at PMB do mine. Very reasonable price and quick in and out back to me.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
914werke
post Jun 7 2024, 09:58 AM
Post #4


"I got blisters on me fingers"
**********

Group: Members
Posts: 10,777
Joined: 22-March 03
From: USofA
Member No.: 453
Region Association: Pacific Northwest
So I didnt see it described there but there was an alum alloy ver prior are these the same?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
burton73
post Jun 7 2024, 01:24 PM
Post #5


burton73
****

Group: Members
Posts: 3,658
Joined: 2-January 07
From: Los Angeles
Member No.: 7,414
Region Association: Southern California
Eric put those on Mark Sonners car in rear with the 15 inch 7r copies or deep 7s - Vented rotors on the copy of 914-6 caliper.

I asked mark to try to get a picture of the rear set up today. Great photo ( A California Utah- We Bad)

Best Bob B
Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
burton73
post Jun 7 2024, 03:10 PM
Post #6


burton73
****

Group: Members
Posts: 3,658
Joined: 2-January 07
From: Los Angeles
Member No.: 7,414
Region Association: Southern California
Here is a picture Mark just sent. Its not that clear of a photo.

Best Bob

Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
infraredcalvin
post Jun 7 2024, 05:35 PM
Post #7


Distracted Member
***

Group: Members
Posts: 1,563
Joined: 25-August 08
From: Ladera Ranch, CA
Member No.: 9,463
Region Association: Southern California
So these are being made as a repop, and are designed to work with an SC rotor, why aren’t the calipers machined so that they work with the sc rotor (the consumable part) without modification? (IMG:style_emoticons/default/confused24.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Montreal914
post Jun 7 2024, 06:33 PM
Post #8


Senior Member
***

Group: Members
Posts: 1,684
Joined: 8-August 10
From: Claremont, CA
Member No.: 12,023
Region Association: Southern California
Maybe because these calipers are 914-6 replicas? (IMG:style_emoticons/default/smile.gif) 9146-GT rear calipers were 914-6 rears with a 10mm spacers. They also used a unique vented rotor that was the diameter of the /6 rotor (286mm) but 20mm wide instead. I believe this rotor is the same as the one on the 916 (part number below). 911 rear rotors are 289mm diameter so... (IMG:style_emoticons/default/biggrin.gif)

Below are the various rear rotor dimensions

I believe the outer half of the 914-6 rear caliper is 911 M rear caliper part, so only only the inner half is 914-6 specific.

914-4 rear rotor:
Dia: 282mm
Thk: 9.4mm

914-6 rear rotor:
Dia: 286mm
Thk: 10.5mm

914-6 GT rear rotor:
Dia: 286mm
Thk: 20mm
P/N 901-352-041-12 (same as 916)
User is online!Profile CardPM
Go to the top of the page
+Quote Post
Maltese Falcon
post Jun 8 2024, 10:59 AM
Post #9


Advanced Member
****

Group: Members
Posts: 4,822
Joined: 14-September 04
From: Mulholland SoCal
Member No.: 2,755
Region Association: None
QUOTE(Montreal914 @ Jun 7 2024, 05:33 PM) *

Maybe because these calipers are 914-6 replicas? (IMG:style_emoticons/default/smile.gif) 9146-GT rear calipers were 914-6 rears with a 10mm spacers. They also used a unique vented rotor that was the diameter of the /6 rotor (286mm) but 20mm wide instead. I believe this rotor is the same as the one on the 916 (part number below). 911 rear rotors are 289mm diameter so... (IMG:style_emoticons/default/biggrin.gif)

Below are the various rear rotor dimensions

I believe the outer half of the 914-6 rear caliper is 911 M rear caliper part, so only only the inner half is 914-6 specific.

914-4 rear rotor:
Dia: 282mm
Thk: 9.4mm

914-6 rear rotor:
Dia: 286mm
Thk: 10.5mm

914-6 GT rear rotor:
Dia: 286mm
Thk: 20mm
P/N 901-352-041-12 (same as 916)


Correct on the # 901-352-041-12 , we have those on #40 Sonauto
(IMG:style_emoticons/default/number40_914.jpg)
User is online!Profile CardPM
Go to the top of the page
+Quote Post
Graydingo
post Jun 8 2024, 01:41 PM
Post #10


Member
**

Group: Members
Posts: 52
Joined: 12-August 22
From: Las Vegas
Member No.: 26,768
Region Association: Southwest Region
QUOTE(infraredcalvin @ Jun 7 2024, 04:35 PM) *

So these are being made as a repop, and are designed to work with an SC rotor, why aren’t the calipers machined so that they work with the sc rotor (the consumable part) without modification? (IMG:style_emoticons/default/confused24.gif)


The non GT version of the 914-6 caliper that PMB sells (it doesn't have the spacer in the middle of the caliper halves) can work with the off the shelf non vented rotor that they also sell. So that would probably be the easy upgrade for most. For those that want a vented rotor though I think it's worth the extra effort to have the outside perimeter machined down to clear.

FWIW there's an old thread on here that explains that the caliper can be moved slightly on the ears to clear the bigger diameter 911 rotor. Though I don't see how this is possible or good practice as you wouldn't want the caliper to ever shift or move. I suppose you could make offset spacer or something to lock it in the right spot.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
mepstein
post Jun 8 2024, 03:24 PM
Post #11


914-6 GT in waiting
***************

Group: Members
Posts: 19,570
Joined: 19-September 09
From: Landenberg, PA/Wilmington, DE
Member No.: 10,825
Region Association: MidAtlantic Region
QUOTE(Graydingo @ Jun 8 2024, 03:41 PM) *

QUOTE(infraredcalvin @ Jun 7 2024, 04:35 PM) *

So these are being made as a repop, and are designed to work with an SC rotor, why aren’t the calipers machined so that they work with the sc rotor (the consumable part) without modification? (IMG:style_emoticons/default/confused24.gif)


The non GT version of the 914-6 caliper that PMB sells (it doesn't have the spacer in the middle of the caliper halves) can work with the off the shelf non vented rotor that they also sell. So that would probably be the easy upgrade for most. For those that want a vented rotor though I think it's worth the extra effort to have the outside perimeter machined down to clear.

FWIW there's an old thread on here that explains that the caliper can be moved slightly on the ears to clear the bigger diameter 911 rotor. Though I don't see how this is possible or good practice as you wouldn't want the caliper to ever shift or move. I suppose you could make offset spacer or something to lock it in the right spot.


Most shops charge a pretty minimal fee to turn down the diameter of a rotor. I pay $20 to have it done.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
mb911
post Jun 8 2024, 04:21 PM
Post #12


914 Guru
*****

Group: Members
Posts: 7,200
Joined: 2-January 09
From: Burlington wi
Member No.: 9,892
Region Association: Upper MidWest
I wish this was available prior to my GT brake conversion
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Montreal914
post Jun 9 2024, 11:26 AM
Post #13


Senior Member
***

Group: Members
Posts: 1,684
Joined: 8-August 10
From: Claremont, CA
Member No.: 12,023
Region Association: Southern California
QUOTE(Maltese Falcon @ Jun 8 2024, 09:59 AM) *

Correct on the # 901-352-041-12 , we have those on #40 Sonauto
(IMG:style_emoticons/default/number40_914.jpg)

Out of curiosity. I did a search online but couldn't find them available anywhere. Do you have a source in case you would need at set? They must be available somewhere... (IMG:style_emoticons/default/idea.gif)
User is online!Profile CardPM
Go to the top of the page
+Quote Post
mepstein
post Jun 9 2024, 12:17 PM
Post #14


914-6 GT in waiting
***************

Group: Members
Posts: 19,570
Joined: 19-September 09
From: Landenberg, PA/Wilmington, DE
Member No.: 10,825
Region Association: MidAtlantic Region
QUOTE(Montreal914 @ Jun 9 2024, 01:26 PM) *

QUOTE(Maltese Falcon @ Jun 8 2024, 09:59 AM) *

Correct on the # 901-352-041-12 , we have those on #40 Sonauto
(IMG:style_emoticons/default/number40_914.jpg)

Out of curiosity. I did a search online but couldn't find them available anywhere. Do you have a source in case you would need at set? They must be available somewhere... (IMG:style_emoticons/default/idea.gif)

I haven’t found them. Marty might have nos or a special source (IMG:style_emoticons/default/shades.gif) but it’s so easy to have SC rotors trimmed down that I wasn’t looking that hard. From what I heard Eric say in the past, they are also quite expensive.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
914Sixer
post Jun 9 2024, 12:38 PM
Post #15


914 Guru
*****

Group: Members
Posts: 9,004
Joined: 17-January 05
From: San Angelo Texas
Member No.: 3,457
Region Association: Southwest Region
Those special rotors have not been NLA for a LONG TIME. When I sourced some around 2010 there was only 6 left at the factory.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
davep
post Jun 9 2024, 02:16 PM
Post #16


914 Historian
*****

Group: Benefactors
Posts: 5,208
Joined: 13-October 03
From: Burford, ON, N0E 1A0
Member No.: 1,244
Region Association: Canada
QUOTE(914Sixer @ Jun 9 2024, 02:38 PM) *

Those special rotors have not been NLA for a LONG TIME. When I sourced some around 2010 there was only 6 left at the factory.

I must have received my pair from you out of that purchase. Not that these are not finished inside for the drum brakes.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Maltese Falcon
post Jun 9 2024, 08:44 PM
Post #17


Advanced Member
****

Group: Members
Posts: 4,822
Joined: 14-September 04
From: Mulholland SoCal
Member No.: 2,755
Region Association: None
QUOTE(Montreal914 @ Jun 9 2024, 10:26 AM) *

QUOTE(Maltese Falcon @ Jun 8 2024, 09:59 AM) *

Correct on the # 901-352-041-12 , we have those on #40 Sonauto
(IMG:style_emoticons/default/number40_914.jpg)

Out of curiosity. I did a search online but couldn't find them available anywhere. Do you have a source in case you would need at set? They must be available somewhere... (IMG:style_emoticons/default/idea.gif)


Our restoration shop Aase Motors in OC had a set NOS and NLA, and installed for us. He did say I got the last set he had, and he got these at the old Vasek Polak Porsche race parts dept long ago.
(IMG:style_emoticons/default/number40_914.jpg)
User is online!Profile CardPM
Go to the top of the page
+Quote Post
mepstein
post Jun 10 2024, 05:27 AM
Post #18


914-6 GT in waiting
***************

Group: Members
Posts: 19,570
Joined: 19-September 09
From: Landenberg, PA/Wilmington, DE
Member No.: 10,825
Region Association: MidAtlantic Region
QUOTE(Maltese Falcon @ Jun 9 2024, 10:44 PM) *

QUOTE(Montreal914 @ Jun 9 2024, 10:26 AM) *

QUOTE(Maltese Falcon @ Jun 8 2024, 09:59 AM) *

Correct on the # 901-352-041-12 , we have those on #40 Sonauto
(IMG:style_emoticons/default/number40_914.jpg)

Out of curiosity. I did a search online but couldn't find them available anywhere. Do you have a source in case you would need at set? They must be available somewhere... (IMG:style_emoticons/default/idea.gif)


Our restoration shop Aase Motors in OC had a set NOS and NLA, and installed for us. He did say I got the last set he had, and he got these at the old Vasek Polak Porsche race parts dept long ago.
(IMG:style_emoticons/default/number40_914.jpg)

The right part for the right car. (IMG:style_emoticons/default/beerchug.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: 25th October 2024 - 06:01 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 ...