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Discussion Starter #1
By help from Jeff Roeland at Formula Dynamics USA and Dean Hendrikse at Americas Best Automotive in Atlanta, I have lowered my GranSport. I am pleased with the final result. Not too stiff and yet much flatter in the curves. From my about 200 miles home trip, I found Jeff being quite right with his recommendation:

My advise is once you've found a ride height that is appropriate for your taste, be sure to put some miles on the vehicle as the Skyhook has to relearn the new heights and it may take 100-200 miles or so for that to happen. Once the car has adequate time to adjust, you will see that the car is quite firm but not too rigid. We've only changed your spring rate by 25%.

However, during the installation phase, executed by the primer alignment shop in Atlanta (does all the work for Ferrari, Maserati and Aston Martin and more), we experienced some difficulties due to lack of instructions. That said, Jeff has been excellent to work with and will for any of you who whishes to go this route include text and possible sketches to assist with the installation.

My new ride heights are; Front-Right: 94.5 mm; Front-Left: 92.0 and Rear-Right: 82.5 mm; Rear-Left: 93.0 mm (differences due to corner-weighting of the car)
Above dimensions are measured from top of the 19" GS-rim to the bottom of the fender. (Note pics. shows inches and in an agle thus not quite the shotest distance.

Feel free to contact me direct [email protected] or comment here on the forum if you like more details.

MASERATI = EXCELENCE THROUGH PASSION !
 

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Thanks Kai, We will be providing further information on the installation of our sport springs for new purchasers just to make sure that everything is clear. At the very least, it appears that we may be able to save your installer some time and hassle with a few pointers.

Speaking of which we are going to perform another group buy here on these sport springs for anyone who is interested. Unfortunately we still do not have a local candidate for our work on the non-skyhook models. All of the springs in this run will be powdercoated Black.
 

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please describe the corner weighting

I understand that the car is lowered. Does the factory spec call for different heights for each wheel? Or is this an optimization. If it is an optimization, what is it based on?
 

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Discussion Starter #5
By giving up on a perfect height for each wheel, that is clearance between wheel and fender, one can achieve a better balance of the car based on the drivers weight.
 

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Do you have your original

ride height specs. I see you have the new ones, but did you measure each wheel prior to the mod? If so, can you fill me in. I'm in the middle of a similar exercise. I did not capture the original specs, but I now realize that my rears are at different heights, similar to yours. My thread is the Euro Spec thread. Any info is appreciated.
 

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maseratikai, what is the balance now? or weight at each wheel?
how long did it take for them to balance the gs this way?
 

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Discussion Starter #8
maseratikai, what is the balance now? or weight at each wheel?
how long did it take for them to balance the gs this way?
Hi "M"
From my records received from Dean the data are: Total Weight: 3659; Front: 1984 (54.2%); Rear: 1675 (45.8%); LF: 998; RF: 986; LR: 797; RR: 878.
I re-measured the clearance, as I did not have a full tank when I reported the data last time, vertical clearance between GS 19" rim and underside of fender is:
LF: 96mm; RF: 91mm; LR: 82mm; RR: 87mm. With regard to time for each operation, I can not say, but Dean Hendrikse at America's Best Automotive in Alpharetta GA, [email protected] will probably be glad to tell you. He had experience with QP5, Ferraris and Aston Martins, but never actually did a coupe before mine.
 

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Hi "M"
From my records received from Dean the data are: Total Weight: 3659; Front: 1984 (54.2%); Rear: 1675 (45.8%); LF: 998; RF: 986; LR: 797; RR: 878.
I re-measured the clearance, as I did not have a full tank when I reported the data last time, vertical clearance between GS 19" rim and underside of fender is:
LF: 96mm; RF: 91mm; LR: 82mm; RR: 87mm. With regard to time for each operation, I can not say, but Dean Hendrikse at America's Best Automotive in Alpharetta GA, [email protected] will probably be glad to tell you. He had experience with QP5, Ferraris and Aston Martins, but never actually did a coupe before mine.
thank you for your reply.
shouldn't the LR and RR be a little closer to each other?

i didnt know the F:R is 54:46..... always thought it is almost 50:50 for the GS.
 

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ic. i guess there F:R was not really published and i got it mistaken.
 

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Hi "M"
From my records received from Dean the data are: Total Weight: 3659; Front: 1984 (54.2%); Rear: 1675 (45.8%); LF: 998; RF: 986; LR: 797; RR: 878.
I re-measured the clearance, as I did not have a full tank when I reported the data last time, vertical clearance between GS 19" rim and underside of fender is:
LF: 96mm; RF: 91mm; LR: 82mm; RR: 87mm. With regard to time for each operation, I can not say, but Dean Hendrikse at America's Best Automotive in Alpharetta GA, [email protected] will probably be glad to tell you. He had experience with QP5, Ferraris and Aston Martins, but never actually did a coupe before mine.
I don't totally get the algorithm for the optimal height. From my research, the factory spec had the rears slightly higher than the fronts. Also, Fuel weight and driver weight effect the rears more than the fronts typically by 6-10mm. Also the fuel and driver weight effect the driver rears mor than the passenger rear. So why does the "corner weighted" spec call for the rears lower than the fronts and the driver side rear (where the driver and fuel effect most) already lower than the rest of the car? Look at any pics of masers and you will see the driver side rear jacked up the most because driver weight will normalize it the most.

Just trying to understand why as I'm making my own adjustments. Now I'm working with a spyder, so there may be some differences
Thanks
radgts3bk - 05 Spyder GT, Triple Black, 12k mi. Recently lowered 15 turns on all 4 quadrants.
 
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