safulop

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

hacker-pschorr

The 3-piece lower cross member allows you to remove the oil pan without taking apart the front suspension.

Dave928S

... 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.

safulop

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).

GlenL

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.

Alan

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

Ducman82

I have the koni/coil kit. A little rough for the street with 18" wheels.

jcorenman

What Alan said, if you have money to spend then spend it first on tires-- it makes no sense to make "value" part of the tire decision and then spend money elsewhere. Also make sure your suspension bushings are all in good shape, but I would not recommend replacing anything with urethane... it squeaks unless greased regularly (shades of the 60's).

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

17prospective buyer

Swapping electronics on these is relatively easy when you compare it to today's CAN systems.

James Bailey

One really needs to define "upgrades".... typically they are compromises at best.

17prospective buyer

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.

FredR

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

Alan

But for the car as described - why would you?

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

Alan

Ahh - I was just repeating myself (deleted)

Alan

drnick

I put hyper coils and konis on my 79 and loved it on the street.