Subaru Enthusiasts Car Club of the Sierras - View Single Post

Dean · 2007-03-20, 01:01 PM

Just a bump for season prep and some new info...

No warrenties or responsibility expressed or implied. Modify your car setup at your own risk.

If you don't understand all the implications of making changes to your alignment and other setup settings, do the research and make changes in small increments with testing at each stage in a safe controlled environment...
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The latest manual for the '04 STI DMS 50s show the same info as teh first post, so no substantial changes, but...

After talking to the technical guy at DMS North America, he had some additional suggestions.

Tarmac / Autocross: Rear suspension can be lowered an additional 10mm to 350mm without significant geometry impact. May reduce downforce at higher speeds though compared to 360mm.

Front Alignment:

Camber -2.75 may be more appropriate for high lateral loads.

Front toe of 1/32" OUT per side 1/16" total toe OUT will substantially help turn in.

Rear toe of 1/32" IN per side 1/16" total toe IN appears to have the best results for road course performance especially at corner exit.

A very small amount of Rear toe OUT (1/32"-1/16" total toe OUT)will substantially assist entry and mid corner rotation, but adversely affect corner exit speeds. This is probably only appropriate for tight autocross courses on cars with stock or similar understeering suspension setups and lower torque.

2007-03-20, 01:01 PM	#17
Dean Señor Cheap Bastarde Real Name: Dean Join Date: May 2003 Location: $99 Tire Store Posts: 9,294 Car: $.04 STI Class: Fast,Cheap & Reliable=STI Deal, did somebody say Deal? Oh, Dean, yeah that's me.	Just a bump for season prep and some new info... No warrenties or responsibility expressed or implied. Modify your car setup at your own risk. If you don't understand all the implications of making changes to your alignment and other setup settings, do the research and make changes in small increments with testing at each stage in a safe controlled environment... ---------------------------- The latest manual for the '04 STI DMS 50s show the same info as teh first post, so no substantial changes, but... After talking to the technical guy at DMS North America, he had some additional suggestions. Tarmac / Autocross: Rear suspension can be lowered an additional 10mm to 350mm without significant geometry impact. May reduce downforce at higher speeds though compared to 360mm. Front Alignment: Camber -2.75 may be more appropriate for high lateral loads. Front toe of 1/32" OUT per side 1/16" total toe OUT will substantially help turn in. Rear toe of 1/32" IN per side 1/16" total toe IN appears to have the best results for road course performance especially at corner exit. A very small amount of Rear toe OUT (1/32"-1/16" total toe OUT)will substantially assist entry and mid corner rotation, but adversely affect corner exit speeds. This is probably only appropriate for tight autocross courses on cars with stock or similar understeering suspension setups and lower torque. __________________ I am a Commodore PET --- Now get off my lawn you kids...