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PCA Member since 1988
Join Date: Feb 2018
Location: SW Washington State
Posts: 4,638
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Agre with dannobee and winders: 1-1/2 inch drop is significant enough to affect alignment. Based on my measurements, the front wheel arch ends up about 26-1/2" when the front suspension height is set according to specs. Of course, that depends on wheel and tire combos too, but your 27" measurement sounds like it's higher than the spec right now.
Winders also mentioned the roll center. If you go lower than the stock height, the roll center changes to cause the front of the car to roll more strongly than the rear, which causes changes in oversteer/understeer. You also will reduce the operating range of the front shock, and you will be almost riding on the rubber bumpers in the shock, which will change the ride harshness. Proceed carefully and incrementally. Don't drop it the full 1-1/2" at once. Do it in 1/2" steps and test drive in between.
Nditz1 mentioned corner balance. Listen to his advice. These cars are very sensitive to corner balance and will pull left or right, fooling you into thinking it's the alignment. Get the camber and caster set, then check the corner balance, especially if the car pulls slightly to one side.
IMO, the "right way" to lower the front is to spend the coins to raise the spindles on the struts, or buy new struts with that feature.
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1973.5 911T with RoW 1980 SC CIS stroked to 3.2, 10:1 Mahle Sport p/c's, TBC exhaust ports, M1 cams, SSI's. RSR bushings & adj spring plates, Koni Sports, 21/26mm T-bars, stock swaybars, 16x7 Fuchs w Michelin Pilot Sport A/S 3+, 205/55-16 at all 4 corners.
Cars are for driving. If you want art, get something you can hang on the wall!
Last edited by PeteKz; 09-03-2024 at 01:31 PM..
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