Suspension question, fabrication - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 02-23-2011, 09:27 AM   #11
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My bad, I meant I'm going to create the coils for the drop. All I have now is the stock analysis. My car has the fe1 coils correct?
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Old 02-24-2011, 05:35 PM   #12
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So you designed and made new sway bars for your car and you don't know what suspension it had to start with?
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Old 03-10-2011, 01:46 PM   #13
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Yeah, I took the sway bar off an just measured the dimensions. Also I'm gonna have to redo my coil analysis since I just got back to school and the files were curupted. I couldn't retreive any of the data except for my solidworks drawing. I'll try to redo this next week sometime I think.
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Old 03-11-2011, 10:24 PM   #14
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Ok. So.. are we ever going to see pics of the sways?
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Old 03-16-2011, 08:57 AM   #15
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Haha yes I'll try and post pics up soon, ive been busy with school work and interviews for Co-Ops.
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Old 03-16-2011, 01:45 PM   #16
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What about a factory FE5 strut? I'm running the Bonneville GXP suspension on my 04 LeSabre, which uses FE5 springs, and bought new OEM FE5 struts to go with them. Even compared to the Monroes, it has to have a lot more dampening, due to the higher rate of the FE5 springs.
I started out with an FE1 suspension, and followed a member here who swapped FE2 for FE5.

What if you were to combine a stiffer lowering spring with an FE5 strut setup? I'm not sure of the relative stiffness of your lowering springs to a stock height FE5, but something like the FE5 strut might compensate for the increased spring rate. But then, the drawback is that the FE5 came from an 8th gen H body. Not sure it would fit in an earlier application without altering your geometry.

Also, I know some of the Monroes, the Sensa-trac'*, the dampening effect changes where the piston is. If you go to lower a car on Sensa tracs, the strut isn't working within its normal range, so it will completely mess up the ride. The whole idea is that it moves very little in the normal height range, while it stiffens up at the extremes. If you lower it, the whole setup will be inconsistent. You want a strut that has a constant dampening factor, not something variable like the Monroes.
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Old 03-16-2011, 03:05 PM   #17
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^^ The newer strut will not bolt up to a pre 2000 knuckle.

Swapping to a front 00 knuckle (like I did) opens the strut choices up to 97+ W-body and 00+ H etc.

The three major things associated with that are:
Switching to a 12" brake (stock 00+ H, F-body, etc.)
Making sure that the spring associated with the strut you're using has the same upper coil ID as stock so it works with the 92-99 strut top mount (97+ W body springs do for sure)
And shimming the strut shaft where it goes through the top mount if it'* smaller than stock.
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Old 03-30-2011, 04:12 PM   #18
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Still wanting to see these sways..
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