Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > Porsche 911 Technical Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
Join Date: Feb 2002
Location: Van Nuys
Posts: 9,800
Why does my car handle funny?

This was the question posed to us from the owner of a nice Carrera RS clone. "So when does this funny handling occur?" we asked. "Whenever l take a curve at any kind of speed, the back of the car feels really twitchy!"

Ok- we took a look at his spring plates and this is what we found:
Very important that you guys (and gals) check that the rear bushings are in good shape. In this particular case, we had to replace the cups, spring plates, and torsion bars since so much sagging and wear occurred. Not to mention that an uncontrolled rear suspension is a safety issue as well.
Old 03-03-2005, 12:00 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered User
 
Join Date: Aug 2002
Location: Orchard Park, NY
Posts: 10,522
I presume you removed the spring plate covers so we can see the damage to the bushings...right?

I mean ...they weren't *missing*.....were they?.....or?

Wil
__________________
Wil Ferch
85 Carrera ( gone, but not forgotten )
Old 03-03-2005, 01:02 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Registered User
 
ckissick's Avatar
 
Join Date: Jan 2003
Location: the beach
Posts: 3,908
Was the damage so glaringly obvious when everything was put together? My car handles fine, but the t-bars are sagging a bit on the bushings. I may have a new project on my hands.

The engine runs great, though. Thanks, Dave.
__________________
Charlie
1966 912 Polo Red
1950 VW Bug
1983 VW Westfalia; 1989 VW Syncro Tristar Doka
550 Beck Spyder, 1989
Old 03-03-2005, 01:04 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Registered User
 
Chuck Moreland's Avatar
 
Join Date: Apr 2002
Location: Santa Clara, CA
Posts: 5,666
Wow

Charlie, a quick visual check can be made. Look at the tube-portion of the spring plate where it exits the spring plate cover. It should be perfectly centered in the hole.

If it is off-center, your bushings are toasted. In extreme cases, the tube will actually be in physical contact with the spring plate cover.

What Dave has pictured is beyond extreme!
__________________
Chuck Moreland - elephantracing.com - vonnen.com
Old 03-03-2005, 01:22 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Too big to fail
 
widebody911's Avatar
 
Join Date: Jan 2002
Location: Carmichael, CA
Posts: 29,665
Garage
Send a message via AIM to widebody911 Send a message via Yahoo to widebody911
Ok, that settles it! No more fat chicks!
__________________
"You go to the track with the Porsche you have, not the Porsche you wish you had."
'03 E46 M3
'57 356A
Various VWs
Old 03-03-2005, 02:25 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Registered User
 
Join Date: Jul 2001
Location: Springfield, MO
Posts: 1,422
Send a message via AIM to Oldporsche
Cool

As soon a warm weather comes, I see my next project.

David Duffield
Old 03-03-2005, 04:03 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Registered User
 
North Coast Cab's Avatar
 
Join Date: Sep 2002
Location: Cleveland
Posts: 4,422
Garage
The same thing happens in the front. If the bushing have "flowed" the t-ar car rub and cause a binding feeling up front. Both are cheap and fairly easy to do, though they take a good day worth of grunting.

John
__________________
1985.5 944 GTS
Old 03-03-2005, 04:04 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Registered User
 
Plavan's Avatar
 
Join Date: Apr 2002
Location: Clovis, CA
Posts: 2,796
Garage
Quote:
Originally posted by widebody911
Ok, that settles it! No more fat chicks!
Thats funny coming from you Widebody
__________________
Chad Plavan
911ST Race Car/2.5L SS Race Motor #02
1972 911T- Numbers matching- Restoring to stock
2011 Porsche Spyder Wht/Blk/Carbon Fiber Buckets/6-Speed (Sold)
2016 Elan NP01 Prototype racecar- Chassis #20, #02
Old 03-03-2005, 04:31 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
Registered User
 
Join Date: May 2003
Location: Carleton MI
Posts: 782
Garage
I am going to do this soon, so what is the best plan of action. What bushings do I use for mostly street? Banana arm bushings too? What else while "I'm in there" stuff.
__________________
87 Carerra Coupe
04 GMC Yukon
07 Mazda 3
00 GMC Sierra
Old 03-03-2005, 04:48 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)
Registered User
 
Join Date: Jan 2003
Location: IL
Posts: 1,610
As a data point.... here's the spring plate bushing from an '88 with 118k miles on it... you can see the deformation, but its not that bad. I ended up having them zinc plated and putting chuck's bushings on it.


Old 03-03-2005, 05:11 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #10 (permalink)
Super Moderator
 
cstreit's Avatar
 
Join Date: Feb 2000
Location: Naperville, IL USA
Posts: 13,056
Garage
Heh heh...

This one reminded me of a car I just did...

Customer: "Why is the brake pedal not returning back "

Hmmm.... Lets look at the pedal cluster... Ohhhhhhh...

__________________
Chris
----------------------------------------------
2008 Yamaha R6
2001 GT3 Cup - "Pepin"
1999 Spec Miata
1996 993 RS Replica
1971 Norton 750 Commando
Alcon Brake Kits
Old 03-03-2005, 05:24 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #11 (permalink)
Registered User
 
Tim Walsh's Avatar
 
Join Date: Sep 2002
Location: Green-Salem, NC
Posts: 3,914
Garage
Send a message via AIM to Tim Walsh
Hey that looks familiar.. 2 years with clogged sunroof drains and sitting outside will do that.
__________________
Tim
1973 911T
2005 VW GTI
"Dave, hit the brakes, but don't look like your htting the brakes...what? I DON'T KNOW, BRAKE CASUAL!!!" dtw's thoughts after nearly rear ending a SHP officer
Old 03-03-2005, 05:28 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #12 (permalink)
Registered User
 
randywebb's Avatar
 
Join Date: Nov 2004
Location: Greater Metropolitan Nimrod, Oregun
Posts: 10,043
It's not the 118k miles on it, it's the age of the car - i.e. the # of hours it has spent putting wt. on the rubber, whether driven or not.
__________________
"A man with his priorities so far out of whack doesn't deserve such a fine automobile."

- Ferris Bueller's Day Off
Old 03-03-2005, 05:32 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #13 (permalink)
Registered User
 
Join Date: Feb 2002
Location: Van Nuys
Posts: 9,800
how it looks now
Old 03-03-2005, 05:33 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #14 (permalink)
Registered User
 
pwd72s's Avatar
 
Join Date: Apr 2001
Location: Linn County, Oregon
Posts: 36,250
OMG...some scary pics here. Guys, all I can say is to REALLY think about suspension. I recently had mine gone thru by Jeff Gamroth of ROTHSPORT. I wanted to do some "racy" things he advised against, knowing me and my car. I argued back to the racy side. Then it dawned on me...this guy is THE winning ALMS Porsche's crew chief. I finally said: "Jeff, make it a car that you would enjoy driving on the street & backroads....He did just that...in spades. To repeat...REALLY think about suspension. Then? Listen to the people you trust. The check writing may hurt, but the final results could be worth it.
__________________
"Now, to put a water-cooled engine in the rear and to have a radiator in the front, that's not very intelligent."
-Ferry Porsche (PANO, Oct. '73) (I, Paul D. have loved this quote since 1973. It will remain as long as I post here.)
Old 03-03-2005, 05:40 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #15 (permalink)
Bird. It's the word...
 
Fishcop's Avatar
 
Join Date: Feb 2001
Location: Port Macquarie NSW Australia
Posts: 5,077
Garage
Dave, in general, what do you recommend replacing the original bushes with? Factory rubber, poly or poly-bronze?
__________________
John Forcier
Current: 68L 2.0 Hotrod - build underway
Old 03-03-2005, 06:10 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #16 (permalink)
Registered User
 
Grady Clay's Avatar
 
Join Date: Dec 2003
Location: Arapahoe County, Colorado, USA
Posts: 9,032
Paul has some good advice here.

Best,
Grady
__________________
ANSWER PRICE LIST (as seen in someone's shop)
Answers - - - - - - - - - - - - - - - - $0.75
Answers (requiring thought) - - - - $1.25
Answers (correct) - - - - - - - - - - $12.50
Old 03-03-2005, 06:32 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #17 (permalink)
Registered User
 
Join Date: Nov 2001
Location: AUSTRALIA
Posts: 3,492
I take it that's a Targa pedal cluster?
__________________
Audi B7 S4
Old 03-03-2005, 09:15 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #18 (permalink)
Registered User
 
Join Date: Feb 2002
Location: Van Nuys
Posts: 9,800
Factory rear rubber bushes used to be available from the dealer for the 68 and earlier cars. Don't know if those are available anymore. We really like to install The Elephant Polybronze for any type of performance oriented 911 (and 914) owner.The neatrix replacement rubber bushes for street or clients on a tight budget. If the client is prone to deferred maintainance, the Neatrix also gets the nod.

I am not a fan of the poly urethane bushes for the control arms. Though they are good for sway bar mounts, we have seen too many plastic bushings seize in their mountings, and fret away from the friction. Who needs uncontrolled added "spring rate"? Worse yet- we have seen several failures of the inner rear control arm plastic bushes on race cars- now who was driving that forklift?!
We mount our bushings (neatrix too) with proper grease to aid in free movement of the suspension.
IMHO- we have been very happy with the Elephant bushing kits and believe them to be one of the most important parts of repairs/restoration that one can do to an old suspension
__________________
1970 914-6 street"evil cockaroach"
1970 911 Spyder
1970 911S Conda
1973 911S Glacier Blue
Old 03-04-2005, 08:34 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #19 (permalink)
Somewhere in the Midwest
 
MotoSook's Avatar
 
Join Date: Oct 2001
Location: In the barn!
Posts: 12,495
Quote:
Originally posted by pwd72s
OMG...some scary pics here. Guys, all I can say is to REALLY think about suspension. I recently had mine gone thru by Jeff Gamroth of ROTHSPORT. I wanted to do some "racy" things he advised against, knowing me and my car. I argued back to the racy side. Then it dawned on me...this guy is THE winning ALMS Porsche's crew chief. I finally said: "Jeff, make it a car that you would enjoy driving on the street & backroads....He did just that...in spades. To repeat...REALLY think about suspension. Then? Listen to the people you trust. The check writing may hurt, but the final results could be worth it.
And what was the final formula?
Old 03-04-2005, 08:44 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #20 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 03:54 AM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.