I've always believed in the start simple strategy. take care of all the little stuff, then slap on the major items.
So I'd slap on the lower chassis braces and upper strut braces (both do help) first. the upper braces are direct bolt on. 5 min each. The lower braces require you to punch a hole in the control arm bracket, which requires you getting under the car and deal with copious metal filings coming down, and the metal is thick/hard. Get a good titanium bit for this!
I'd do the major items all at once. Make it a mega-PIA weekend project break everything down, replace all the bushings you wish to, slap on the new shocks/springs/mounts when you put it back together.
If you're having a shop do it, it's also logical to get the parts together (assuming you have a bring-your-own-parts friendly auto shop) and have the labor done in one swoop, minimizing how broke you go.
Be very selective in the parts you purchase. they will ultimitly determine the sucess of your not-so-cheap project.
So you've decided to throw quite a bit of cash into your car's suspension... I dont blame you, these cars handle great with some simple upgrades.. However, do NOT forget the tires and wheels. Make sure you have good high performance tires with appropriatly sized tires. 240's seem to love 205-55R16's. Same size tires the S70 T5's come with, and many other volvo's. I upgraded my 240 to this size and was glad I did so (was running 14's!)
And of course, make sure you've got properly tightened, greased, wear free wheel bearings. Seems the 240 like to develop a clunk if the bearing is not preloaded properly (aka loose) or worn.
iPD also offers two other interesting items you might like.. Have not tried either, maybe on the next order!
There's a tower-to-tower brace, which looks nice. I'd guess it would defintly add some support but I remember it being a bit more $$ than I want to spend (yet)
There is also a plate that braces the top of the strut tower. This type of plate is part of the tower-to-tower, but is also offered seperatly to make the top of the strut tower more rigid. Seems like it'd make for a more solid upper strut brace installation too. accoring to IPD people have complained of cracked strut towers, and they believe the plate reduces stress on the tower and increase rigidity. anyone tried them?
You'll hear a lot of debate as to which shocks and springs to get. Base this decision on your personal taste, how you'd like your car to handle, vs public popularity. There are actually quite a few options for both springs and shocks... ranging from gabriel, monroe to koni's and bilstiens.
A few less choices for springs, but you'll still spend some time comparing!
I've rode with too few varieties to compare... currently running volvo-OEM in the front (as the prev owner had the dealer replace them 5 months before I bought the car) and KYB GR2's in the rear.
The GR2's are fairly stiff, but with stock springs they are certainly not excessive. With lowering springs i'd imagine they'd feel much more stuff.
Considering OMP springs myself... Havn't made a firm enough decision to plunk the cash down. I also need to find out if my wheels and tire combo has the proper offset and size to be compatible with a 1.5+" drop. The rear wheels are already close enough to rub the wheelwell when the axle moves down on one side. Consider this type of thing if you upgrade your wheels/tires. The 240's dont have tons and tons of wheel space, as much as it looks like they do.
good luck!
-Nate
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