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MPegler's Avatar
 
Join Date: Feb 2004
Location: Camarillo, CA
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Is this normal body-roll??

This is a pic of my car from the Santa Barbara region Autocross. The car is at euro ride height, and corner balanced. New shocks (green) I always forget the name. While driving, the handling seems fine, but it seems to roll more when turning left. Is that possible?



The car is Diamond Blue, but looks purple in this pic (yuk).

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Mike

'88 Commemorative Edition Carrera
Cabriolet
'87 Catalina 30
Old 08-13-2008, 02:30 PM
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I'm an avid auto-xer and I wasn't happy with the body roll of my stock '87 suspension. I 'd say by your pic, that's normal. If your pleased with your ride height, you could add stiffer sway bars. My car was too high so the while the bars were being indexed, they were replaced with 22/29 sanders, PB bushings, and a wevo camber king. Much flatter and the squishiness of the suspension under hard cornering is gone.

Nothing wrong with Diamond Blue either....even if it does look purple on some days.

Here before pic. I don't have any post suspension work or under hard corning.

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Last edited by JB36; 08-13-2008 at 04:36 PM..
Old 08-13-2008, 04:32 PM
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what G- force

or at least what speed and radius
Old 08-13-2008, 05:06 PM
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That's normal for stock. Problem is that everyone else has torsion bar upgrades and probably doesn't claim it when they class their cars.

George
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Old 08-13-2008, 05:19 PM
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This is a stock 1977 911S at speed through a nice sweeper in the 1993 Point Mugu Autocross:
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Old 08-13-2008, 06:33 PM
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Max Sluiter
 
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Your car is a cabriolet and is from a year when Porsche made heavy cars.

You have a lot against you.

If you want to decrease roll, you need to do everything together in harmony. Torsion bars stiffer, sway bars, revalved dampers... (polybronze, monoballs)

A cabriolet will flex a lot.

You could remove weight which helps in braking, accelerating, and turning.
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1971 911S, 2.7RS spec MFI engine, suspension mods, lightened
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Old 08-13-2008, 06:36 PM
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Thanks for the responses. I suspected as much. I'm gonna leave it alone, and save for a top-end re-build (103,000) using some oil now.
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Mike

'88 Commemorative Edition Carrera
Cabriolet
'87 Catalina 30
Old 08-13-2008, 10:22 PM
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My Targa with stock Torsions, 19 mm sways, Bilsten HD front/sport rears and lowered below "euro". Looks a lot like yours.

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Old 08-13-2008, 11:40 PM
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You're right HarryD. Thanks for the pic.
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Mike

'88 Commemorative Edition Carrera
Cabriolet
'87 Catalina 30
Old 08-14-2008, 06:08 AM
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KTL KTL is offline
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Even with bigger torsion bars you're going to have body roll. You need to do both torsion bars and sways (preferably adjustables to add roll stiffness AND adjustability) to arrest most of the body roll of your car.

See this post I made about a relatively stock car (stock except for 22mm adj. rear sway bar)vs. my car with 22/29 torsions. They look the same

Tracking 86 or newer Carrera w stock susp?

I recently switched to 23/31 and a stiffer rear TRG bar and the car feels really hooked-up this year. I have been at the same track but have no new pictures to provide. Looking forward to this winter when I will install the adjustable front bar I have and that should take car of most of the body roll- and probably ride REALLY stiff!

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Last edited by KTL; 08-14-2008 at 09:40 AM..
Old 08-14-2008, 09:37 AM
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