What does a performance alignment look like? | Project Porsche 997

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Update by Tim Suddard to the Porsche 911 Carrera project car
Nov 2, 2022 | Porsche, 997, 911, alignment, Porsche 911 Carrera, Alignment Shop

Our Porsche 997 scored rave reviews at its first track outing: “It’s so good that there is no way to do anything to make it better without ruining it,” JG Pasterjak reported.

[Does trying to improve a car run the potential of ruining it, too? | Column]

But maybe we can make it a little better? Before taking our Porsche 997 back to the Florida International Rally & Motorsports Park, we wanted to check and optimize our car’s alignment specs.

We visited Alignment Shop Inc. here in Ormond Beach, Florida.

Geoff Thompson, our long-time buddy, has aligned most of our race cars for years. He is also quite knowledgeable on the Porsche 911.

He warned us that without Porsche GT3 adjustable lower control arms, we would be disappointed in how much negative camber we could achieve up front. Still, before we just start spending money and replacing parts, we thought we should check and see what kind of adjustment was available before ordering new control arms.

Geoff was right.

With the stock front control arms, a Porsche 997 at stock ride height can only get about a half degree of negative on each side. To keep the tires happy on both the track and street, we’d like a degree to a degree and a half up front.

After setting negative camber to the maximum of about half a degree, we set toe at zero. At the front of the car, toe-out will provide better turn-in but you can go too far. For more about alignments, read this article: What Is Camber, Caster and Toe?

At the rear, with the stock parts we can get quite a bit of negative camber as our Porsche had close to 2 degrees on the right and about 1 degree on the left. We balanced both sides to 1.5 degrees of negative camber–this should offer a good street/performance compromise. Geoff set toe-in at about 1/16 inch at the rear.

[Can a stock Porsche 997 handle track abuse? | Project Porsche 997]

What’s next? New wheels, stickier tires and some pondering about updated suspension hardware–oh, and a trip back to the FIRM, too.

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kaybat
kaybat New Reader
11/1/22 5:07 p.m.

Going thru this on a Cayman. Bit the bullet and bought Tarrett LCA's.

CAinCA
CAinCA GRM+ Memberand HalfDork
11/1/22 6:11 p.m.
kaybat said:

Going thru this on a Cayman. Bit the bullet and bought Tarrett LCA's.

Ditto. The Porsche GT3 LCAs are basically unobtanium. The places that do have them are charging close to what Tarett does. 

I went with -2.4F/-1.8R camber and zero toe F/R. 

David S. Wallens
David S. Wallens Editorial Director
11/2/22 9:20 a.m.

Yeah, we might have to go with aftermarket GT3-style LCAs. 

docwyte
docwyte PowerDork
11/2/22 10:33 a.m.

Do yourself a favor and just get the OEM arms.  The aftermarket ones are crap.

deaconblue
deaconblue New Reader
11/2/22 1:53 p.m.

Did I miss something?  When did you get what looks to be a set of APEX SM-10 rims?  Inquiring minds want to know!

David S. Wallens
David S. Wallens Editorial Director
11/2/22 3:39 p.m.

In reply to deaconblue :

Next update!

nderwater
nderwater UltimaDork
11/2/22 4:30 p.m.

Just here to say that I love that GRM has a 997 project car.  Well done boys.

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