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Discussion Starter #1
I was hoping to upgrade my 2007 QP Sport springs with the Formula Dynamic group buy. I have since learned that the coil over shocks in models after 2006 do not have an adjustable lower perch :mad: I know I could use a fixed height spring (is there any available?) but I would prefer to have adjustable as I don't know how much I want to lower car and would like the option to adjust as needed.

I am thinking an option might be to use an adjustable coil over sleeve. I am not sure if that would work, and if it did, what specs I should look for i.e. diameter of sleeve etc.

Also, I am not sure if the fixed perch on the skyhook shock is flat and therefore would accept a sleeve, or if the lower perch is angled or indented on top to accept the end of spring such that the lower end of sleeve wouldn't sit flush on perch. I have attached picture below in hope that someone might be able to at least answer this question. Any advice would be welcome.
 

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Performance Specialist
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We do plan on building a spring for this model however it will be a fixed height spring. To be honest, once you install the springs you will not touch the ride height again. It's a nice feature but it's unlikely that you will use it much especially considering that when you change ride height, you will need to re-align the car. We plan on producing a spring which will cut the distance between the tire and fender in half.
 

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Discussion Starter #3
Alignment specs?

We do plan on building a spring for this model however it will be a fixed height spring. To be honest, once you install the springs you will not touch the ride height again. It's a nice feature but it's unlikely that you will use it much especially considering that when you change ride height, you will need to re-align the car. We plan on producing a spring which will cut the distance between the tire and fender in half.
OK, after the query on BHP and torque, here is another question to further demonstrate my ignorance. Presumably there are some factory specifications for wheel alignment on QP. It would seem unlikely that dealer is going to agree to install lower sport springs, so how does independent know what / how to adjust alignment after installation? :confused: Unlikely if I phone dealer they would provide that information!

Does one just use tried, tested, and true specs that any qualified mechanic experienced in wheel alignment would look up for a "luxury sport saloon"? Or is there room to play, and if so, what would you suggest as specs to give my mechanic? Or do I need to go to a race tuner to weigh each wheel etc?

One last question, I read on another post there may be issues with the self adjusting lights if car is lowered. Is that correct?
 

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...so how does independent know what / how to adjust alignment after installation?...
one should consider whether it is necessary to use the factory alignment or have the 3rd party align it to you liking. Since you are replacing the springs, I would assume you are not satisfied with the factory setup so why go back to the factory alignment.
 

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Discussion Starter #5
European spec springs?

We do plan on building a spring for this model however it will be a fixed height spring...which will cut the distance between the tire and fender in half.
I await anxiously! In meantime, I heard that there may be a European factory QP spring which lowers the car. Apparantly it has fewer turns / coils than found on QPs shipped to NA. Is this true? If so, could my source simply be referring to the stock spring found on the newer QP Sport GT S which lowers the car (on a non sky hook suspension) or is there a different QP Sport GT spring used on European cars which is different than QP Sport GT springs sold in N.Am? Regardless, does this shorter spring just lower the car, or does it also stiffen the ride / improve handling? Could this spring be used on N.Am QP Sport GT?
 

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This spring is almost ready from Jeff. I am finishing up the test install on my 2007 this week.
 

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Discussion Starter #7
Great news!

That is fantastic! I have anxiously awaited this. Please keep us posted on results.
 

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Yes, we're making some good progress and should have positive results coming soon!

We've also had a bit of success lately on several of the GranTurismo "S" Models so I'm sure that we'll have that product officially posted shortly.

Best Regards,
-- Jeff
 
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