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Old 01-17-2007, 07:14 AM   #1
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Originally Posted by racer_d
The fronts are pretty straight forward. The rears, in the pics I've only "scanned" in the Bentley manual, indicate that entire rear hubs and axles and other components need to be disassembled before you can get the shock/springs out of the car. Labor is the killer. I'd imagine a shop would charge 8hrs of labor to do the whole job. Then you will need an alignment (figure $150-250).

Springs - $250-400?
Shocks - Lots$$ (Shocks could be, just a guess, $100-200 each)
Alignment - $150-250
Time spent - figure a whole day or weekend if trying it yourself for the first time (or say 8hr shop time X about $80-100/hr)

Please don't take these numbers as gospel. Just a regurgitation of what I've read elsewhere, plus the personal experience of redoing the entire suspension on my 911 a few years ago.
Hi,

I agree with your estimates. One might be able to lower them slightly by prudent shopping or having say a lift, but in general, your's are good numbers...

Happy Motoring!... Jim'99
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Old 01-17-2007, 08:21 AM   #2
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if you are going to do a suspension mod...do a suspension mod.

if you have the means go with a full kit, new shocks and springs. On an expensive car like this I wouldn't consider anything other than coilovers which allow you to adjust the ride height. If you pass up on the coilover kit you are stuck at the ride height which you may not like at all.

I had a very experienced mechanic I once used refuse to install a set of eibach springs on a previous sports car on principle. He said there is no point in having to do all this labor, re-align the car and then face the possibility that the ride may be all wrong. You need to do some proper driving in a similar car with the exact set up you are considering before you pull the trigger.

Also, lowering a car that is often driven on public roads, particular one on 18" wheels and higher, is going to take a toll on your car. All the joints and connections through out the car will slowly start to loosen. The car will start to rattle and before you know it things are starting to break. If your car is a Sunday driver with few miles clocked in a year its probably safe. But if you drive that thing allot know what you are doing. Lowering a car is not a cosmetic adjustment, its a performance mod. Needs to be tested on the road before you make a change that you will be stuck with or have to pay allot of labor to undo.
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Old 01-17-2007, 09:23 AM   #3
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Not lowering a car is like not putting braces on your kids teeth when they have big gaps.

If you're going to do it, do it right. Go with coilovers. Yes just adding springs will give you the better look and a slight increase in performance, but adding coilovers will be a night and day difference in ride quality and handling.

I spend just under $4k out the door for Cross coilovers, installation, alignment, corner balance, and tax. Well worth it in my opinion.

-David
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Old 01-17-2007, 09:34 AM   #4
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That sounds a bit high. How much did you pay for the CC's?
You can get a set of Bilstein PSS9's installed for under $3K with alignment--
and if you're lucky they'll let you sit in it during the alignment.

I'm definitely going this route when it comes time to swap out the shocks and springs.
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Old 01-17-2007, 10:25 AM   #5
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I think the suspension was like $2700-2800. Then the labor, alignment, and corner balance was another $700-800. Then tax was another $300-320 or so.

I could have gone with the PSS9s, but I wanted something a little higher end. I autocross the car and was looking for that extra edge over all the cars with PSS9s.

Not overpriced in my book. Yes I could have gotten the suspension for cheaper online, but cheaper is not always better. I purchased them and had them installed from one of the few distributors in the US. The customer service was top notch, and that itself is worth more $$$ in my book.

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Old 01-17-2007, 10:42 AM   #6
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I'm surprised that the way you're addressing what you describe as the "big gap between the tires and fenders" is by lowering the car rather than getting 19 inch tire/rims, which I think is what Jeff Squire was getting at. My previous base 987 had the 17" OEM rims and that gap you're alluding to was horrendous (not to mention that the 17" rim design is pretty uninspiring). I would agree that while not as bad, the gap is still present with the OEM 18" rims you have. The 19" (Carrera S) wheels on my current car eliminate that gap and make the car appear lower (although the rim design remains uninspiring).

The 987 wheel wells are designed to look flush, and therefore more appealing, with the 19" upgraded tires that Porsche sells for that model, just as the 986 with 16"s looks like poo when compare to the upgraded 18" wheels.

PASM, which I have, lowers the car by 10mm (just shy of half an inch) and anyone who tells you that they can spot a car with PASM from the outside is pretty much FOS (a non-Porsche acronym), so I don't think lowering your car by that amount will achieve the effect you're looking for.

As far as how the car feels on the inside, compared to its competitors, Im curious what your reference point is, as both the SLK and Z4 "feel" like you're riding higher, than in the 987.
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Old 01-17-2007, 11:07 AM   #7
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Originally Posted by SD987
I'm surprised that the way you're addressing what you describe as the "big gap between the tires and fenders" is by lowering the car rather than getting 19 inch tire/rims, which I think is what Jeff Squire was getting at. My previous base 987 had the 17" OEM rims and that gap you're alluding to was horrendous (not to mention that the 17" rim design is pretty uninspiring). I would agree that while not as bad, the gap is still present with the OEM 18" rims you have. The 19" (Carrera S) wheels on my current car eliminate that gap and make the car appear lower (although the rim design remains uninspiring).

The 987 wheel wells are designed to look flush, and therefore more appealing, with the 19" upgraded tires that Porsche sells for that model, just as the 986 with 16"s looks like poo when compare to the upgraded 18" wheels.

Getting the 19" rims will not increase the diameter of wheel (the rim + tire combo), as 17", 18" and 19" rim + tire combos produce wheels of about the same overall diameter. Actually, the diameter of the 18" wheels (rim + tire) is slightly larger than the diameter of the 19" wheels.

The only way to fill out the gap without lowering is by using a larger diameter wheel. This means getting larger profile (vertically fatter) tires than recomended for each particular rim size. This will actually raise the car a bit but will fill the wheel well better. This will also affect the suspension, and the speedo and odometer measurements as they have not been calibrated for these larger diameter wheels.

Z.
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Old 01-17-2007, 12:12 PM   #8
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Thanks for all the ideas.


I went onto bilstein's website and there are some adjustable suspensions w/ shocks & springs for the boxster (not sure if it has coilovers) or not, but there was also no price on the site.



The idea of 19" wheels and fatter tires seems logical, but I worry about adding too much unsprung weight. Lightweight 19" wheels will be VERY expensive!


Can I buy and use coilovers independently or do I need to replace multiple suspension parts?


Adjustable ride height does make sense. I wish I had PASM but I don't :-(
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Old 02-03-2007, 10:04 AM   #9
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I don't think my car needs to be lowered. I like my suspension travel and not scraping. Mine is also a 986. 987s have much larger wheel wells to support the larger, more trendy wheels that consumers desire.
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Old 02-03-2007, 11:04 AM   #10
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It's true - the roads here do stink. They are very "well-traveled".

The aesthetic advantage is important, but when I found out about the performance advantage, that really turned me to this.


MNboxster, you said that the height is adjustible w/ coilovers, right?


I suppose I don't really need it right now. I'm not exactly a track driver or Auto-x'er.
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Old 05-02-2007, 06:26 PM   #11
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Anyone know the least expensive coilovers around for the Boxster? I'm considering the bilstein PSS9 set-up, but $1800 + installation sounds pricey..



If I can save $$ on the actual parts, then I'd be happy.
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Old 05-02-2007, 06:37 PM   #12
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Der Geist bought a set for a lot less than that and is happy with them. Fully adjustable too.
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Old 05-02-2007, 06:45 PM   #13
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Quote:
Originally Posted by Bavarian Motorist
Anyone know the least expensive coilovers around for the Boxster? I'm considering the bilstein PSS9 set-up, but $1800 + installation sounds pricey..



If I can save $$ on the actual parts, then I'd be happy.
Yes, Ksport USA makes some coilovers for the boxster, and they go for around $1200 at Vividracing. They're listed as 96-05, which to my guess, means the 97-04 986. Not sure if they have an application for your 987, though maybe you could give them a call and find out.

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