refresh951

Couple weeks ago Josh B and myself helped Brad (ilikemy944) install some suspension mods. He had Koni Sports all around and he added stiffer springs (350 lb) up front and added 30 mm torsion bars in the rear (effective rate 335 lb, see here) and he lowered the car about 1 inch. The car was completely transformed at the track. Brad stated that his 951 handled better than his 2008 Cayman S! The car also did not feel obnoxious on the street. Very impressive results and very low cost.

Obviously, you can throw A LOT of money at this but what fun is that.

So, what would you consider to be a low cost, biggest bang for your buck, street/DE setup?

dmcampbell

PowerFlex polyurethane bushings in black everywhere. Less than $600 + install. Mike

Robert W. Bausum Jr.

More track time!

Paulyy

That's not improving the car. That's just improving your skills.

Thom

Bilstein B6.
Better than the basic Koni yellows for about the same price. Your car being an '86 your struts should feature the threaded collars already, so installation should be a breeze.

Looks like Paragon Products has them in stock.
http://www.paragon-products.com/Bils...30-0104-do.htm
http://www.paragon-products.com/Bils...p/b36-2052.htm

Eric_Oz_S2

Thats a very rear biased setup. Surprised it does't oversteer.

ilikemy944

??
I used 375lb fronts to the 30mm torsion bars to err on the side of understeer.

Eric_Oz_S2

It's amazing how different setups work for different cars and drivers. I run 350f and about 250r and get no understeer at track speeds but can induce some oversteer if wanted. This is generally on third and fourth gear turns. However, on very tight corners, (like 1st gear auto cross turns) I can get understeer. This isn't unexpected as the weight transfer is completely different in these conditions.

I also run Hoosiers or slicks, so that may also are a difference. I have always used the 1.0f:0.7r wheel rate ratio guide for setting up the balance. Then tune the rear sway if needed to suit.

Cheers

gruhsy

I'm going to try the motion control ones now instead of KW's

Voith

how painful is 500f/350r setup on the street for a car that is not DD but rather a sunday/ocasional track driver?

dmcampbell

I have 425# front with 30mm tb, and with NT-01's at 255/40-17 in front and 275/40-17 rear it is very neutral. Ride is great on street with stock Koni sports. Mike

Dougs951

For some reason that spring rate for the 30mm torsion seems wrong.

Either way, I run 350f 30mm rear with full monoballs and the car is a dream.

refresh951

This thread has a lot of good info:

https://rennlist.com/forums/944-turb...installed.html

67King

Honestly, the JoshB has it - an inexpensive, already built, NA track car. I know that isn't what the question was, but here's the rub.......when you are a Group 1 student, and I don't care HOW fast you are, you really aren't going to be able to find the limits of something that is still streetable. As you progress, you won't be able to drive very well on the track in something that is streetable.

This isn't directed just at you, as I see people put this stuff out there all of the time. But you can't have any idea how that is without knowing anything else about the car. Sway bars come into play. Damper settings come into play. More importantly, tire sizes come into play. For example, when I was running 245's at all four corners, I ran 650's front, 550's rear, and the car was balanced (30mm front bar, 19mm rear bar). When I went to 245s/285s, I changed my rear springs to 850's. When I changed from Leda to MCS, I went either 700 or 750 front, and 1000 rear. I initially had a tad bit of oversteer, but I adjusted the dampers (I believe I softened up the rear compression one click from what the MCS factory recommendation was).

refresh951

Have to start somewhere