Bob Rouleau

Has anyone figured out the right camber settings yet? I began with neg 1.5 all around. No enough. Then went to 2.1 in front and 1.8 in the rear. Fairly even wear on the Hoosier R6 in back but the fronts show too much wear on the outside.

Conventional wisdom is that the Mk 2 needs less camber than the Mk 1. On the 2007 RS I ran neg 2.5 in front and neg 2.2 in the rear.

Is the 2010 version really different? With wider front wheels than the 07 model I can see slightly less neg camber in front. If nobody has a better idea, I plan on trying neg 2.3 Front and Neg 2.0 in back.

Best,

TRAKCAR

I began with -2 all around, car felt great, even temps across the tires.
I tried -1.5 front and it was no good. I will go -2R and -2.5F next time out also.

I ran -2.3F and -1.8R on my MKI GT3.

997gt3north

my guess is that it will be the exact same setup
many mk1 users were running 9" front rims for track tires
most ended up in the -2.5F, -2.2R range (for combo track street setup)

the 2010 cup cars running at Mosport in the World Challenge 2 weeks ago on 18" R888s (the spec tire) were running basically (-2.8F, -2.5r) - i was there, i knew a driver, hang out with the team and specifically asked this question

2007 cups running Mich Slicks run -4 on all corners at Mosport - the even front to back camber is because of the much smaller rear tire width compared to our street setup and the World Challenge Setup I quoted above

yes suspension stuff has changed between 996, 997mk1 and 997mk2 but it still seems similar cambers work on all these cars, slightly more in the front than the rear with slightly lower rear camber as the rear rim and tire has gotten wider

lawjdc

Bob, are you running 18's or 19's with your Hoosiers?

Nizer

Are you running stock ride height?

NJ-GT

Bob, you meant conventional assumption.

Nothing has changed drastically in the GT3 suspension since the 1999. The car is still using struts-type up front and multi-link (5) in the rear. Porsche has stiffen the body, the sway bars the spring rates, made the wheels and tires widers, but the essential suspension design is the same.

The 1998 GT3 Cup up to the current 2010 GT3 Cup are running very similar alignment settings. They run more negative camber due to slicks. They also run more negative camber in the front compared to the rear. The Cup cars have experienced more drastic changes than the street GT3s.

Typically the 996/997 requires -0.5 to -1.0 extra negative camber in the front compared to the rear. However, the street settings provide -1.0 more negatice camber in the rear compared to the front (to promote the safe understeer).

Hoosier R6/A6 (very common track tires) recommends -3.0 degrees camber. I ran them at -2.5 to -3.5 front and -2.5 rear. I liked the car balance better with -3.5 front and -2.5 rear.

For street driving, I would just run the stock settings, but I don't setup my cars for street driving.

roberga

that worked well on my 996 and 997 GT3s. -2.0 f -2.5 r. The only issue is if you put street miles on it the rears will cords out quickly.

Bob Rouleau

Thanks guys. On my 07 RS I ran 2.5 neg F and 2.2 Neg R which was perfect on Hoosier R6 18 inch tires.

I think I'll go for the same setup and see what happens. I can confirm that 2.1 Neg in front is not enough using 245 18 inch Hoosiers.

Best,

mooty

i drove RS on track 2x. i took temp and i cannot see how anything less than 2 would work.

roberga

mooty, what is going on with the blue tape? A detail before Sears Point?

mooty

new girls always get detailed first. i need to feel them up before i take them out.

Nizer

Looks like a Griot's Garage advertisement.

malmasri

Bob: We are waiting for you to finnaly post the appropriate and final set up
worth noting that there is a tremendous difference with a Guards LSD installed...perhaps prior to messing with the Camber..etc.

Bob Rouleau

Agree about the effects of a better LSD but with so few track miles on my car the wear on the outside edges is strictly a lack of negative camber. I now have neg 2.4 in front neg 2.2 in back. I was able to get 2.4 without rotating the struts or adding shims. Off to the track tomorrow to test. I suspect that the setup will end up being the same as the Mk 1 RS. I would have gone for neg 2.5 in front but I did not have shims handy.

mooty

u think?

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over 400 cotton towels (white with red edges, you know what i am talking about if you recognized griots)
over 200 microfiber clothes.
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i supposed washing kids clothes with towels drenched in 3M adhesive remover didn't help... but i LOVE that smell.... explains why i am a little off the wall.