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Rear end 'shimmy'
I'm getting a 'shimmy'/vibration through the seat of my pants as I accelerate hard in 3rd and 4th. Most noticeable accelerating full throttle from 120kph in 4th gear and it fades with speed. I'm thinking possibly a driveshaft or CV joint or is there anything alse I should check first?
Thanks
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1984 3.2 Carrera Impact Bumpers on track: http://www.youtube.com/watch?v=C4qbFNkdD2o |
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09-23-2004, 02:05 PM
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You do not have permissi
Join Date: Aug 2001
Location: midwest
Posts: 39,870
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The only other thing I could think of was worn suspension bushings-i.e the tires twist outwards under load and are no longer parallel.
Not sure that that would happen only in those conditions. |
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09-23-2004, 02:17 PM
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john- I'm pretty sure it's there all the time but when you accelerate hard in 1st and 2nd it all over to quick to notice it
 My passenger could feel it too. It's like a pulsing that gets faster with roadspeed but only under hard load.
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1984 3.2 Carrera Impact Bumpers on track: http://www.youtube.com/watch?v=C4qbFNkdD2o |
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09-23-2004, 02:28 PM
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Designer King
Join Date: Mar 2004
Location: Toronto, ON Canada
Posts: 5,499
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Rear tire(s) out of balance?
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Paul Yellow 77 Sunroof Coupe/cork interior; 3.2L SS '80 engine/10.3:1/No O2; Carrera Tensioners; 11 Blade Fan; Turbo tie rods; Bilstein B6; 28 tube Cooler; SSI, Dansk; MSD/Blaster; 16x7" Fuchs/205/50 Firestone Firehawk Indy 500s; PCA/UCR, MID9 Never leave well enough alone |
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09-23-2004, 02:33 PM
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Location: Manalapan NJ
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Most probably a bent rim ,possibly a bad tire...
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'96 Dodge Viper '09 Maxima '05 zx10..(0-100-0 before your turbo even spools!!) '99 Rottweiler '08 Cane Corso |
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09-23-2004, 02:41 PM
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paulporsche I think I can eliminate wheel and tyre issues because the fault was noticable before I swapped to the 16s that are on there now.
I will check the balance again though as they are toyo r888 trackday tyres. Maybe they go out of balance easy or maybe I steam cleaned a weight off earlier when I washed it. hmmmm
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1984 3.2 Carrera Impact Bumpers on track: http://www.youtube.com/watch?v=C4qbFNkdD2o |
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09-23-2004, 02:42 PM
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I should add the tyres have done 300 miles since fitting (by me at work, carefully)
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1984 3.2 Carrera Impact Bumpers on track: http://www.youtube.com/watch?v=C4qbFNkdD2o |
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09-23-2004, 02:44 PM
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Join Date: Apr 2002
Location: member Central PA Region PCA , Home of the Hershey Swap
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I would be concerned about the CV joints/half shafts.
regards, Steve
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Steve Frequent Pelican Customer 1984 Carrera 3.2 (S. Wong Chip, B&B dual exhaust, Lightened OEM Flywheel, Centerforce Clutch, OEM 930 Rear and Front Sway Away 930 T-bars and sway bars w/OEM susp. bushings,, Turbo Tie Rods, bump steer kit, Adj. Rear Spring Plates, OEM Short Shift, H4s and "City Lights", slotted rotors, 944 Wheels, 225/50/16 and 245/40/16 Dunlop "sneakers," and more 2002 996 TT X50 (H&R Springs) 2002 WRX in WRX Blue Proud Rennlist Charter Member Support and Join Rennlist.com An Expert on absolutely nothin' more than my own opinions! 2002 WRX in WRX Blue |
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09-23-2004, 02:45 PM
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Yeah I'm pretty sure of it too just wanted confirmation. Is it more cost effective to service the shaft or to buy a replacement?
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1984 3.2 Carrera Impact Bumpers on track: http://www.youtube.com/watch?v=C4qbFNkdD2o |
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09-23-2004, 02:52 PM
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1984 Porsche 911 3.2 Carrera 3.2
