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 )

2 Pages V  1 2 >  
 Reply to this topicStart new topic
> New Twist - 5-Lug Fronts
Eric_Shea
post Sep 16 2010, 08:32 PM
Post #1


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

Group: Admin
Posts: 19,289
Joined: 3-September 03
From: Salt Lake City, UT
Member No.: 1,110
Region Association: Rocky Mountains
For the cheap and easy 5-lug conversion, here's a new (old) twist on the 914 rotor method. As mentioned in the "5-Lug Question & Answer Thread":

<<My preference in doing this now would be to machine the rotors from the front and use screw in 14x1.5mm studs (yes, I can hear a few screaming in horror as I type this). IF DONE PROPERLY this would be my preferred method. First off; it will not cut into the webbing on the backside. Secondly; to do it properly would require Loctite “Red”… the permanent stuff. This is, after all, a permanent application. Late model rotors will need the centering ring machined off to work with Fuchs. This requires a bit more time and money at the machine shop but, a fairly common and easy practice.>>

http://www.914world.com/bbs2/index.php?showtopic=105728

I decided to do a set this way and I'm "very" pleased with the results all around.

First, looking at the backside you can see none of the webs have to be cut out or removed. In order to press in a Verbus stud a major amount of the webbing on two webs had to be removed. Not here:
Attached Image

The key to doing this right is to use the "Red Stuff":
Attached Image

Here's the application on the threads:
Attached Image

Finished product:
Attached Image

Bottom line: 5x130 pattern with a 14x1.5 tap, 10 14/14x1.5 studs, Red locking compound and away you go. These are also late rotors that have had the centering ring milled off to accomodate the Fuchs. Yeah they're not Verbus but in this configuration I'll guarantee them against the life of the rotor (and then some). What I mean by and then some is, if you go through a rotor you can simply heat these with a MAP torch and remove them and use them on the new setup.

Again, if you're intent on using 914 rotors, I think this is not only the best way to do this (more meat on the back of the rotor and very clean install) but, quite accessable for the home mechanic. You just need to pay the machine shop. (IMG:style_emoticons/default/wink.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mike Bellis
post Sep 16 2010, 10:14 PM
Post #2


Resident Electrician
*****

Group: Members
Posts: 8,346
Joined: 22-June 09
From: Midlothian TX
Member No.: 10,496
Region Association: None
Since I have 930 rotors and callipers, I'm not in the market for a re-drill. It looks perfectly fine to me for a street car. If I were to re-drill, I may consider going to a 5x114.5 or some other bolt spread. Just think of the possible wheel choices with a different pattern. Of course, If you must have Fuchs you have to stay at 130mm.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
DanT
post Sep 16 2010, 10:23 PM
Post #3


Going back to the Dark Side!
****

Group: Members
Posts: 4,300
Joined: 4-October 04
From: Auburn, CA
Member No.: 2,880
Region Association: None
Nice Eric...
I have no issues with the screw in studs..as a matter of fact I have taken some flak for it over the years after using them on a couple of my builds...actually I am using them currently on my latest build...
I like this as a less expensive option to go to 5 lug.
I like the studs since you can then use Porsche original lug nuts


Attached image(s)
Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Eric_Shea
post Sep 16 2010, 10:34 PM
Post #4


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

Group: Admin
Posts: 19,289
Joined: 3-September 03
From: Salt Lake City, UT
Member No.: 1,110
Region Association: Rocky Mountains
QUOTE
I have no issues with the screw in studs


Yup. The main problem I've seen with screw in studs is the people that screw them in. (IMG:style_emoticons/default/biggrin.gif) If they don't use a locking agent they "will" come loose.

I really think this is the best route for this application.

QUOTE
If I were to re-drill, I may consider going to a 5x113.5 or some other bolt spread


Yup... I would imagine any pattern could be indexed around the holes. With the 5x130 you can keep one and drill only 4 more. That's helpful.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
SGB
post Sep 16 2010, 10:41 PM
Post #5


just visiting
****

Group: Members
Posts: 4,086
Joined: 8-March 03
From: Huntsville, AL
Member No.: 404
Region Association: South East States
studs (and an impact gum) are great if you have AX tires...
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
DanT
post Sep 16 2010, 10:50 PM
Post #6


Going back to the Dark Side!
****

Group: Members
Posts: 4,300
Joined: 4-October 04
From: Auburn, CA
Member No.: 2,880
Region Association: None
I used screw in studs and loctite on my Phoenix Red racecar....
torqued and used a cordless 19.2V impact gun for 3years and never had one stud come loose...
that car was flat towed, so the street wheels/tires were on for towing and then the race tires went on at the venue...
Worked great.
If I decide to go to a 5 lug on my current car, I would consider doing just what Eric has suggested.
good stuff.. (IMG:style_emoticons/default/biggrin.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
rick 918-S
post Sep 17 2010, 06:12 AM
Post #7


Hey nice rack! -Celette
***************

Group: Members
Posts: 20,783
Joined: 30-December 02
From: Now in Superior WI
Member No.: 43
Region Association: Northstar Region
I've used screw in studs a time or two. I never use an impact gun on wheels. I use a torque wrench by hand to 65 lbs. You damage the lug nuts, stretch studs, and in extreme cases actually warp the stud flange. I'm not changing tires like NASCAR.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
DanT
post Sep 17 2010, 08:16 AM
Post #8


Going back to the Dark Side!
****

Group: Members
Posts: 4,300
Joined: 4-October 04
From: Auburn, CA
Member No.: 2,880
Region Association: None
my impact gun is not strong enough to torque the wheels. It is only for getting the lugs off after being broken loose or for putting the lugs on before torquing. Just easier on the hands than twisting 16-20 lugs into place for torquing (IMG:style_emoticons/default/biggrin.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
sixnotfour
post Sep 17 2010, 09:17 AM
Post #9


914 Wizard
**********

Group: Members
Posts: 10,636
Joined: 12-September 04
From: Life Elevated..planet UT.
Member No.: 2,744
Region Association: Rocky Mountains
(IMG:style_emoticons/default/beer.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
sixnotfour
post Sep 17 2010, 09:17 AM
Post #10


914 Wizard
**********

Group: Members
Posts: 10,636
Joined: 12-September 04
From: Life Elevated..planet UT.
Member No.: 2,744
Region Association: Rocky Mountains
(IMG:style_emoticons/default/shades.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Eric_Shea
post Sep 17 2010, 02:32 PM
Post #11


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

Group: Admin
Posts: 19,289
Joined: 3-September 03
From: Salt Lake City, UT
Member No.: 1,110
Region Association: Rocky Mountains
I should have said "New Twist" for us...

I've seen a lot of these in the past and, when you think your way through it, it's probably the best route if the locking compound is used. That's basically why I wanted to document it. To show how easy it is and to make sure others use the locking compound.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
bandjoey
post Sep 17 2010, 02:51 PM
Post #12


bandjoey
****

Group: Members
Posts: 4,930
Joined: 26-September 07
From: Bedford Tx
Member No.: 8,156
Region Association: Southwest Region
I didn't see these on your www. If Santa were to bring a set of 5 lug wheels what's the cost of front and rear rotors w/lugs installed?
User is online!Profile CardPM
Go to the top of the page
+Quote Post
gothspeed
post Mar 13 2011, 05:02 PM
Post #13


Senior Member
***

Group: Members
Posts: 1,539
Joined: 3-February 09
From: SoCal
Member No.: 10,019
Region Association: None
Are these studs available in longer lengths? If so, from who (IMG:style_emoticons/default/smile.gif)?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
sixnotfour
post Mar 13 2011, 06:02 PM
Post #14


914 Wizard
**********

Group: Members
Posts: 10,636
Joined: 12-September 04
From: Life Elevated..planet UT.
Member No.: 2,744
Region Association: Rocky Mountains
http://www.race-studs.com/servlet/the-20/M...-Nose%27/Detail
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
gothspeed
post Mar 13 2011, 06:41 PM
Post #15


Senior Member
***

Group: Members
Posts: 1,539
Joined: 3-February 09
From: SoCal
Member No.: 10,019
Region Association: None
QUOTE(sixnotfour @ Mar 13 2011, 05:02 PM) *

http://www.race-studs.com/servlet/the-20/M...-Nose%27/Detail

Awesome (IMG:style_emoticons/default/smile.gif)!!! Has anyone done this drill/tap/stud method on the rear?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
recko911
post Mar 14 2011, 10:42 PM
Post #16


Member
**

Group: Members
Posts: 93
Joined: 6-February 06
From: Los Angeles, CA
Member No.: 5,535
QUOTE(gothspeed @ Mar 13 2011, 05:41 PM) *

QUOTE(sixnotfour @ Mar 13 2011, 05:02 PM) *

http://www.race-studs.com/servlet/the-20/M...-Nose%27/Detail

Awesome (IMG:style_emoticons/default/smile.gif)!!! Has anyone done this drill/tap/stud method on the rear?


good question is this possible?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
DanT
post Mar 14 2011, 10:44 PM
Post #17


Going back to the Dark Side!
****

Group: Members
Posts: 4,300
Joined: 4-October 04
From: Auburn, CA
Member No.: 2,880
Region Association: None
why not....
just like using pulled studs just tapping instead of straight drilling. (IMG:style_emoticons/default/smile.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Eric_Shea
post Mar 15 2011, 10:41 AM
Post #18


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

Group: Admin
Posts: 19,289
Joined: 3-September 03
From: Salt Lake City, UT
Member No.: 1,110
Region Association: Rocky Mountains
Yes... I have a set here. Want them? (IMG:style_emoticons/default/biggrin.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
dax1969
post Oct 18 2023, 07:30 AM
Post #19


Member
**

Group: Members
Posts: 374
Joined: 10-March 14
From: belgium
Member No.: 17,103
Region Association: None
QUOTE
These are also late rotors that have had the centering ring milled off to accomodate the Fuchs.


Does anybody know if the centering ring on the late rotors needs to be milled off if using the repro fuchs wheels ?

thks
Dax
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
rick 918-S
post Oct 18 2023, 08:03 AM
Post #20


Hey nice rack! -Celette
***************

Group: Members
Posts: 20,783
Joined: 30-December 02
From: Now in Superior WI
Member No.: 43
Region Association: Northstar Region
QUOTE(dax1969 @ Oct 18 2023, 08:30 AM) *

QUOTE
These are also late rotors that have had the centering ring milled off to accomodate the Fuchs.


Does anybody know if the centering ring on the late rotors needs to be milled off if using the repro fuchs wheels ?

thks
Dax


My answer is no. Unless you are using Pedrinni wheels for the early cars on a late car. I could be wrong though... (IMG:style_emoticons/default/idea.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · 914World Garage · Next Newest »
 

2 Pages V  1 2 >
Reply to this topicStart new topic
4 User(s) are reading this topic (4 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: 22nd November 2024 - 10:07 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 ...