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suspension handling issues after upgrade
Vehicle: 1985 Carrera 109,000 miles
New tires front 205/55/15 rear 225/50/15 set to euro height installed the following: bump steer kit turbo tie rods ball joints control arm and sway bar bushings poly flex new rear standard spring plate bushings new rear sway bar bushings new hd bilstein front strut inserts new bilstein rear hd shocks corner balance and alignment new polyflex strut bushings alignment rear 1.5 deg camber no toe front .50 deg camber 6 deg caster 10' toe in complaint: the car handles better around sweeping turns as long as I don't over-steer but floats at higher speeds. It feels like a boat in water, slow to respond and it feels like if I over correct I might loose control. You know how racers warm up their tires at the beginning of an event by weaving back and forth? This car is slow to respond and not sharp for lack of a better term feels like I'm in sand. My friends 77 with no mods feels tighter. thanks for any help.
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1974 sahara beige 911 targa 1982 chiffon 911sc 1985 prussian blue metallic carrera Last edited by kodioneill; 05-21-2014 at 12:45 PM.. |
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Complementary photos
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1974 sahara beige 911 targa 1982 chiffon 911sc 1985 prussian blue metallic carrera |
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Very nice...tire pressure ?
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As per factory 34 rear 29 front I believe. You know, a good explanation of the feel I'm getting is just like too little tire pressure.
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1974 sahara beige 911 targa 1982 chiffon 911sc 1985 prussian blue metallic carrera |
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you should have a little bit of "toe in" in the rear for most street driving. It will make the car feel more stable. Front toe can be at Zero for some better response. But I think most of the time factory toe in is best
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2006 Cayman S 93 RS America white(now living in Arizona) 1974 911S/CARRERA (now living in Australia) Livermore Ca. |
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what about your front shock inserts? you mention new rears, maybe the fronts are bad that would cause that kind of feeling.
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Thanks but they're new bilstein heavy duty inserts.
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1974 sahara beige 911 targa 1982 chiffon 911sc 1985 prussian blue metallic carrera |
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Don't forget your friends 77 probably weighs less too. Less weight, less roll.
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jtp911 |
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Thanks Joe I know, but this is strange it feels as-though when turning at a good rate of speed if I turn the wheel a little extra I'll lose control of the car.
I have a real heavy Solara and it handles like a rat in a sewer pipe.
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1974 sahara beige 911 targa 1982 chiffon 911sc 1985 prussian blue metallic carrera |
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Directional tread?
Todd
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'81 SC |
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1974 sahara beige 911 targa 1982 chiffon 911sc 1985 prussian blue metallic carrera |
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abit off center
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I know wrong toe in the rear mostly if toed out will make the rear feel like you have a flat tire.
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______________________ Craig G2Performance Twinplug, head work, case savers, rockers arms, etc. |
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check steering rack for play... when you turn the steering wheel (even a little) do you see the wheels respond?
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What is the bump steer kit? The two washers at the steering rack, or the more elaborate product? The latter made my 74, set slightly lower than your's, into an unresponsive but dangerous feeling beast.
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jhtaylor santa barbara 74 911 coupe. 2.7 motor by Schneider Auto Santa Barbara. Case blueprinted, shuffle-pinned, boat-tailed by Competition Engineering. Elgin mod-S cams. J&E 9.5's. PMO's. 73 Targa (gone but not forgotten) |
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Yes the rack responds with a small amount of effort it seems very responsive.
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1974 sahara beige 911 targa 1982 chiffon 911sc 1985 prussian blue metallic carrera |
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The bump steer kit is the two washers. Are you saying I should remove said kit?
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1974 sahara beige 911 targa 1982 chiffon 911sc 1985 prussian blue metallic carrera |
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Pull some strings on it. Could be they messed up the alignment.
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Pete 79 911SC RoW "Tornadoes come out of frikkin nowhere. One minute everything is all sunshine and puppies the next thing you know you've got flying cows".- Stomachmonkey |
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Max Sluiter
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I would try some toe-in at the rear.
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1971 911S, 2.7RS spec MFI engine, suspension mods, lightened Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance |
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Re bump steer washers... no, don't remove. I think you've done the right thing. There is a much more expensive variation from Rebel, Elephant and others which can produce bizarre results unless you really know what you are doing and have lowered the car a good deal more than you have. I doubt the washers are your problem. In fact I doubt that any of the hardware changes you made have anything to do with your symptoms. I'll bet it's all in the setup, somewhere.
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jhtaylor santa barbara 74 911 coupe. 2.7 motor by Schneider Auto Santa Barbara. Case blueprinted, shuffle-pinned, boat-tailed by Competition Engineering. Elgin mod-S cams. J&E 9.5's. PMO's. 73 Targa (gone but not forgotten) Last edited by moneymanager; 05-21-2014 at 04:56 PM.. |
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Max Sluiter
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The more expensive version is meant only for cars with raised spindles.
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1971 911S, 2.7RS spec MFI engine, suspension mods, lightened Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance |
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