Notices
928 Forum 1978-1995
Sponsored by:
Sponsored by: 928 Specialists

Rear strut brace?

Thread Tools
 
Search this Thread
 
Old Nov 17, 2005 | 04:58 PM
  #1  
m21sniper's Avatar
m21sniper
Thread Starter
Banned
 
Joined: Jul 2005
Posts: 2,066
Likes: 1
From: Philly
Default Rear strut brace?

I feel my rear is a bit on the loose side in hard cornering. Does anyone make a strut brace for the rear struts of the 928?

I've seen them for 44's, but never for the 928.
Reply
Old Nov 17, 2005 | 05:06 PM
  #2  
Jim bailey - 928 International's Avatar
Jim bailey - 928 International
Addict
Rennlist Member

Rennlist
Site Sponsor

 
Joined: Jul 2001
Posts: 11,542
Likes: 4
From: Anaheim California
Default

The 928 has no struts...
Reply
Old Nov 17, 2005 | 05:12 PM
  #3  
Rick Carter's Avatar
Rick Carter
Rennlist Member
20 Year Member
 
Joined: Apr 2004
Posts: 10,138
Likes: 74
From: Central Ohio
Default

I have one. I bought the DEVEK harness hooks wrapped them around a chromoly bar and welded them together to use as a harness bar with harness eyes welded on the bar. I installed Bilstein/Eibach prior to this. If I wanted to take the bar off I would have to drop the shocks first as the shock towers are canted towards each other.
Rick
85 32v modified
Reply
Old Nov 17, 2005 | 05:14 PM
  #4  
Imo000's Avatar
Imo000
Captain Obvious
Super User
 
Joined: Aug 2003
Posts: 22,846
Likes: 348
From: Cambridge, Ontario, Canada
Default

Originally Posted by m21sniper
I feel my rear is a bit on the loose side in hard cornering. Does anyone make a strut brace for the rear struts of the 928?

I've seen them for 44's, but never for the 928.
Better or wider tires migh do the trick.
Reply
Old Nov 17, 2005 | 05:14 PM
  #5  
BC's Avatar
BC
Rennlist Member
20 Year Member
 
Joined: Dec 2001
Posts: 25,186
Likes: 105
Default

But that rear area could use some strangthening, remember that analysis via stretch and rigidity? Maybe just a link between the holes where the coilovers are to the roof? I know the car twists enough to move the rear hatch and make it squeek.
Reply
Old Nov 17, 2005 | 05:15 PM
  #6  
BC's Avatar
BC
Rennlist Member
20 Year Member
 
Joined: Dec 2001
Posts: 25,186
Likes: 105
Default

Originally Posted by Rick Carter
I have one. I bought the DEVEK harness hooks wrapped them around a chromoly bar and welded them together to use as a harness bar with harness eyes welded on the bar. I installed Bilstein/Eibach prior to this. If I wanted to take the bar off I would have to drop the shocks first as the shock towers are canted towards each other.
Rick
85 32v modified
Nice. Pics?
Reply
Old Nov 17, 2005 | 05:21 PM
  #7  
Rick Carter's Avatar
Rick Carter
Rennlist Member
20 Year Member
 
Joined: Apr 2004
Posts: 10,138
Likes: 74
From: Central Ohio
Default

I'll include pics of the bar with those of the speakers and SC install, hopefully early next week. If things stay on schedule should be at the dyno Saturday.
Rick
85 32v modified
Reply
Old Nov 17, 2005 | 07:08 PM
  #8  
Jim bailey - 928 International's Avatar
Jim bailey - 928 International
Addict
Rennlist Member

Rennlist
Site Sponsor

 
Joined: Jul 2001
Posts: 11,542
Likes: 4
From: Anaheim California
Default

That rather heavy rear structure between the shocks is subject to nearly zero side loading because of the modified double a-arm Weissach rear suspension further it is reinforced by the alloy rear suspension cradle which bolts to the underside. The alloy cradle absorbs all the sideloading from cornering. Roll bars tie into the shock towers because they are the bones of the beast and they are giving the rollbar strength ! 911,944 most cars etc use Mc Phearson strut front ends with a single lower a-arm and the top of the strut since the stub axle is fixed to the strut is under very high sideloads as it trys to hold the wheel upright. Those cars may need strut braces!
Reply
Rennlist Stories

The Best Porsche Posts for Porsche Enthusiasts

story-0

Porsche 911 GT3 Artisan Edition Pays Homage to Japanese Culture

 Verdad Gallardo
story-1

Porsche Reveals Coupe Variant of the Electric Cayenne With a Fresh Look

 Verdad Gallardo
story-2

10 Porsche Colors That Have More Personality Than Most People

 Verdad Gallardo
story-3

Guntherwerks' Final Speedster Creation Is the Ultimate Porsche Restomod

 Verdad Gallardo
story-4

10 Reasons I Hate Going to the Porsche Dealership (& the 1 Reason I Stay)

 Joe Kucinski
story-5

Porsche Shakes Up The Nürburgring Lap Record Table Once Again

 Verdad Gallardo
story-6

6 Ways the Porsche 911 GT3 S/C Redefines Performance

 Joe Kucinski
story-7

10 Wildest Homologation Specials Porsche Ever Sold

 Verdad Gallardo
story-8

Super Rare RUF BTR III Comes Out of Hibernation, Looking For a New Home

 Verdad Gallardo
story-9

10 Porsche Opinions That Can Start a Fight

 Joe Kucinski
Old Nov 17, 2005 | 08:01 PM
  #9  
ErnestSw's Avatar
ErnestSw
Rennlist Member
 
Joined: Mar 2003
Posts: 4,328
Likes: 0
From: Nashua, NH
Default

I gather you're saying that your car is oversteering, ie. the rear end wants to break away. If that's the case, you want to make the front stiffer and the rear looser. Adding a rear strut brace WOULD be the wrong thing to do IF it was useful at all.
Try taking a couple of pounds of air out of your rear tires.
Reply
Old Nov 17, 2005 | 08:02 PM
  #10  
Stan.Shaw@Excell.Net's Avatar
Stan.Shaw@Excell.Net
Addict
Rennlist Member
 
Joined: May 2001
Posts: 2,758
Likes: 0
From: Wilbraham, MA
Default

M21sniper,

Perhaps softening your rear sway bar, or stiffening your front sway bar will change the over steer tendency you feel. Tire pressure changes can also make a big difference. Are your rear springs/shocks stock?
Reply
Old Nov 17, 2005 | 08:06 PM
  #11  
Jim bailey - 928 International's Avatar
Jim bailey - 928 International
Addict
Rennlist Member

Rennlist
Site Sponsor

 
Joined: Jul 2001
Posts: 11,542
Likes: 4
From: Anaheim California
Default

Snipe are you running 245 tires on seven inch rims?
Reply
Old Nov 17, 2005 | 09:52 PM
  #12  
IcemanG17's Avatar
IcemanG17
Race Director
 
Joined: Sep 2004
Posts: 16,271
Likes: 82
From: Stockton, CA
Default

Ernest has it right.....you need to loosen the rear end and stiffen the front! Or an excuse to buy wider rims/tires and run 285's in the rear!
Reply
Old Nov 17, 2005 | 10:12 PM
  #13  
Jim bailey - 928 International's Avatar
Jim bailey - 928 International
Addict
Rennlist Member

Rennlist
Site Sponsor

 
Joined: Jul 2001
Posts: 11,542
Likes: 4
From: Anaheim California
Default

It could also be throttle induced oversteer if he is on the gas too much in the corner... most cars 928 included are set up to understeer by the factory.
Reply
Old Nov 17, 2005 | 10:26 PM
  #14  
ErnestSw's Avatar
ErnestSw
Rennlist Member
 
Joined: Mar 2003
Posts: 4,328
Likes: 0
From: Nashua, NH
Default

m21sniper,
Where are you driving when you feel your rear end loose, on the street or on the track?
Reply
Old Nov 18, 2005 | 01:02 AM
  #15  
Bill Ball's Avatar
Bill Ball
Under the Lift
Lifetime Rennlist
Member
20 Year Member
 
Joined: Mar 2002
Posts: 18,648
Likes: 52
From: Buckeye, AZ
Default

Originally Posted by Rick Carter
I'll include pics of the bar with those of the speakers and SC install, hopefully early next week. If things stay on schedule should be at the dyno Saturday.
Rick
85 32v modified
Rick:

That's good news!
Reply



All times are GMT -3. The time now is 01:27 AM.

story-0
Porsche 911 GT3 Artisan Edition Pays Homage to Japanese Culture

Slideshow: Porsche has created a Japan-only 911 GT3 Artisan Edition that blends track-ready hardware with design cues inspired by traditional Japanese craftsmanship.

By Verdad Gallardo | 2026-04-28 19:37:40


VIEW MORE
story-1
Porsche Reveals Coupe Variant of the Electric Cayenne With a Fresh Look

Slideshow: Porsche's latest electric Cayenne Coupe blends dramatic styling with supercar acceleration, turning the brand's midsize SUV into a 1,139-horsepower flagship.

By Verdad Gallardo | 2026-04-27 19:39:30


VIEW MORE
story-2
10 Porsche Colors That Have More Personality Than Most People

Slideshow: Porsche's wildest paint colors aren't just shades-they're full-blown personalities on four wheels.

By Verdad Gallardo | 2026-04-27 19:38:13


VIEW MORE
story-3
Guntherwerks' Final Speedster Creation Is the Ultimate Porsche Restomod

Slideshow: The last of the Speedsters doesn't just close a chapter, it makes quite the bold, air-cooled statement.

By Verdad Gallardo | 2026-04-22 17:55:04


VIEW MORE
story-4
10 Reasons I Hate Going to the Porsche Dealership (& the 1 Reason I Stay)

Slideshow: Going to a Porsche dealership may not be the dream experience you expect it to be and these are the reasons why.

By Joe Kucinski | 2026-04-21 13:54:19


VIEW MORE
story-5
Porsche Shakes Up The Nürburgring Lap Record Table Once Again

Slideshow: Porsche just proved-again-that precision engineering can outrun brute force at the Nürburgring.

By Verdad Gallardo | 2026-04-18 20:27:02


VIEW MORE
story-6
6 Ways the Porsche 911 GT3 S/C Redefines Performance

Slideshow: Six reasons why you will love the Porsche 911 GT3 S/C and 1 reason you will hate it.

By Joe Kucinski | 2026-04-14 10:21:39


VIEW MORE
story-7
10 Wildest Homologation Specials Porsche Ever Sold

Slideshow: Some of the most desirable Porsche models are those that were sold to the public solely for homologation purposes.

By Verdad Gallardo | 2026-04-08 09:54:26


VIEW MORE
story-8
Super Rare RUF BTR III Comes Out of Hibernation, Looking For a New Home

Slideshow: The lone BTR III-spec Targa features rare RUF engineering with a 430-hp turbo flat-six and fewer than 30 miles since its rebuild.

By Verdad Gallardo | 2026-04-06 20:03:25


VIEW MORE
story-9
10 Porsche Opinions That Can Start a Fight

Slideshow: If you want to start a debate with a Porsche friend, these 10 opinions are a great way to get started.

By Joe Kucinski | 2026-04-02 16:53:02


VIEW MORE