Performance handling from Carl Fausett
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OK, there aren't a lot of threads about the suspension mods from 928 motorsports. Anyone tried the 3-piece crossmember? What good does it do? How about the ride height mods? The coil springs? The sway bar? The steel A-arm? I'm looking at options.
-Sean
-Sean
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The 3-piece lower cross member allows you to remove the oil pan without taking apart the front suspension.
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... and the others give you greater adjustability of suspension compliance and geometry settings. Depends on what you're wanting to achieve, and whether the car is track or road, as to what alterations you'd consider making to components.
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Mine is pure daily driver. No track use. Annual road trip. Just wondering about upgrades. I've also been looking at Carl's complete engine electronics/fueling upgrade, to the tune of $3,500 (yikes).
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Why is Danica staring at me. Do I have to buy Peak antifreeze again, Ms. Patrick? OK. I will.
Carl's stuff may be too intense for a daily driver. I used his spring kit to put in 2.5" springs on Koni's that I had. It's great at the track and stiff in town.
Get some Bilstein shocks and you'll like the firmer ride without jarring bumps. Solid droplinks and polyurathane bushing will stiffen the roll bar without replacing the roll bar.
Carl's stuff may be too intense for a daily driver. I used his spring kit to put in 2.5" springs on Koni's that I had. It's great at the track and stiff in town.
Get some Bilstein shocks and you'll like the firmer ride without jarring bumps. Solid droplinks and polyurathane bushing will stiffen the roll bar without replacing the roll bar.
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Daily driver with annual road trip - I think you are looking in the wrong places...
Maybe get the Bilsteins, but mainly just spring for better rubber. Truly top performance tires will do more to impove your handling than anything else as a first step with easy predictable results and if a tire change was due the added expense isn't really that much (esp. compared to Bilsteins).
Alan
Maybe get the Bilsteins, but mainly just spring for better rubber. Truly top performance tires will do more to impove your handling than anything else as a first step with easy predictable results and if a tire change was due the added expense isn't really that much (esp. compared to Bilsteins).
Alan
Last edited by Alan; 02-09-2014 at 04:32 PM.
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Bilsteins with stock springs is a great combination for the street, well-controlled without being harsh. Stiffer springs (e.g. Hypercoils or Eibach) in combination with any shock will increase harshness (sometimes dramatically) with no gain for street use. (We have Bilstein+Eibachs on both our GT and S4. We like it on the GT but not the S4-- much too harsh. It's going back to stock springs with the Bilsteins).
Swapping motor electronics is crazy, unless you need something that the stock system can't do. Get a Sharktuner instead, then good headers (and exhaust to go with them), then a set of better cams, then find out how GB is doing with his new intake.
Cheers, Jim
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Yes indeed. It's hard to beat OEM engineering and R&D development dollars, especially Porsche. It's like people and their "cold air intakes", thinking that a manufacturer developed an intricate system of resonance boxes, strategic venturi's and tubing all for nothing. You think you are smarter than the MFG when you replace that carefully engineered intake system with a crude "tube with a filter on the end" intake? Now your car has a wonky powerband that is now a little less driveable, and a little more devalued.
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On tires I generally run with either Pirelli, Michelin or [as currently fitted] Continental. In my case final selection is often controlled by what is available. Only once did I try a cheaper make, found that with 265 section up front performance if anything was less than a 235 Michelin PS2 fitted to my stock GTS front wheels. Got rid of them when a suitable tire was available.
For day to day driving stock tire sizes are adequate but if you want to push the limit fitting "full size" rubber takes some beating in terms of getting the best out of your car, however I would not like to push my motor too hard too often given what we know these days.
I also find that the Eibach springs work well supported by good dampers, not too harsh but then that definition is very subjective. What I did find is that as you alter these components thee is quite a degree of interaction, more grip more camber needed etc and I had plenty of long distance help to get me well sorted. Thus as the investment increases you go to good tires, wider tires on stock wheels [if you can], wider wheels with even wider tires, suspension. Playing around with the sway bar is pointless unless and until you have wider tires up front. Probably the most undervalued/neglected adjustment is corner weight balance. In my case no one here has any corner balance scales so I had to set my ride heights on the assumption that the springs were evenly matched and the perch heights constant but I doubt that is anywhere near perfect.
Regards
Fred
For day to day driving stock tire sizes are adequate but if you want to push the limit fitting "full size" rubber takes some beating in terms of getting the best out of your car, however I would not like to push my motor too hard too often given what we know these days.
I also find that the Eibach springs work well supported by good dampers, not too harsh but then that definition is very subjective. What I did find is that as you alter these components thee is quite a degree of interaction, more grip more camber needed etc and I had plenty of long distance help to get me well sorted. Thus as the investment increases you go to good tires, wider tires on stock wheels [if you can], wider wheels with even wider tires, suspension. Playing around with the sway bar is pointless unless and until you have wider tires up front. Probably the most undervalued/neglected adjustment is corner weight balance. In my case no one here has any corner balance scales so I had to set my ride heights on the assumption that the springs were evenly matched and the perch heights constant but I doubt that is anywhere near perfect.
Regards
Fred
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This would never be a first step to take - this thread seemed to start out as a quest for better suspension (so handling..?), then it jumped into engine electronics which seems to me to be quite unrelated.
Spend some time to consider what you really want - there are indeed lots of compromises for a true street car - you can easily make it into a very uncomfortable daily driver...
Any performance mods you consider - remember 2 things:
You only have rubber keeping you on the road - so make it count
You need the brakes to match any performance increases
Alan
Last edited by Alan; 02-09-2014 at 04:34 PM.