JB GT3

I am looking for some adjustable LHS rear wheel control arms for my 996 2004 GT3 CS

I am starting circuit racing & we need to get more camber into the slick tyres to make them work - ie get hot!

Apparently - the standard arms on a road 996 GT3 just won't give enough camber adjustment.

will 996 GT3 Cup (or 996 RS?) arms do the job?


Appreciate any insights/parts available

thanks

996FLT6

Are u running stock suspension? On slicks optimal is upgrading too 2 or 3 way adjustables. If not rotate struts in combo with shims and revalving stock shocks and springs plus ancillaries. Mike

JB GT3

Running Bilstein PSS-9's - 2 way adjustable I think.
Workshop says we still dont have enough camber thou for slicks - so need more adjustable control arms - shims etc wont do it.
- ideas?

NXI20

You really need to be looking at upgrading the control arms to fully adjustable. I would also go with using monoball inserts on the bottom arms & an adjustable toe arm that uses the Cup locking plate to lock off the normal eccentric adjustment which I've found will move when the rest of the suspension is using solid bushings.

GMG / Tarett / RSS all make the appropriate hardware.

AudiOn19s

Is there an official guide to adjusting the upper control arms if you've got the adjustable ones on your car?

My car has adjustable uppers on it, but they are set to stock length. My car still uses the eccentric bolt at the bottom for camber adjustment (I've got locking plates for toe, not camber).

My impression of the upper control arms (dog bones) is that when you start to deviate from stock length you start messing with the bump curve on the car and can really throw it off. They're primarily on my car to get rid of the rubber from the stock arms.

Even with the aftermarket upper control arms on my car I think I'd go with 2 piece lower control arms for the rear like the front has if I were in search of more camber.

997gt3north

This is the type of product you want if you are going 'racing'

http://rss.rpmware.com/rss/rss_tarma...s/g-62403.aspx

- camber is adjusted with shims (comes with kit)
- comes with 3 holes and solid caster pucks for playing with caster to fit your tire in the correct spot
- comes with solid monoball

I have them on my 997Gt3

That said, I am not aware that a 996gt3 is not able to get whatever camber is needed front and rear with all stock parts.

In the front, you have to rotate the front strut tops and then shim to bring caster to spec for large camber values - in the rear, there should be lots of adjustment available.

The advantage with the 2pc type arms (RSS, OEM, other) is that you can get them with monoballs, solid caster pucks, and the 2pc design allows the use of shims that remove the likelihood of camber changing because the eccentric doesn't hold

JB GT3

Thanks guys - awesome advice

JB GT3

RE: That said, I am not aware that a 996gt3 is not able to get whatever camber is needed front and rear with all stock parts.

sadly - post kissing a concrete wall - just cant seem to get enough camber on the LHS rear wheel.

cfjan

If the eccentric adjuster is not enough, then you will most likely have to go with run the 2-piece lower arm setup..

JB GT3

Thanks

Workshop confirmed details as:
996 Cup Car parts - for LHS rear wheel
Left and Right hand lower arm assemblies.
996 331 053 90 left wishbone assembly
996 331 054 90 Right

that seems what you are suggesting?

cheers

cfjan

I was running the street GT3 / RS lower control arms..

996 341 121 90 L
996 341 122 90 R

And matching them w/ the Tarett Engineering monoball ends.. and while at it, added the Tarett's adjustable caster bushings as well.. (see pic above)

JB GT3

thanks again

bobsan

....its not camber that generates tire heat, its toe in or out.