dms
04-08-2009, 09:12 PM
I just finished a Xa Street System on a G8 at Abel Chevrolet Pontiac Buick in Suisun, Ca. Its a new G8, the same color as Petes, with 19s. The owner wanted a slight old school rake and the fronts to have the fenders nearly equal to the tires. This is exactly what we did.
Originally the heights were at 652-655 front, and 650-653 rears. After installing the Xas, we set the fronts to 600mm and the rears to 610mm. The front dampers at 16clicks and the rears at 12 clicks. This is a moderately aggressive setup.
Here are the before and after pictures:
BEFORE AT 652-655 FRONT AND 650-653 REAR
http://forums.peddersusa.com/imagehosting/749dd79fee4488.jpg
After WITH XA'S AT 600 FRONT AND 610 REAR
http://forums.peddersusa.com/imagehosting/749dd7a00761d5.jpg
Now we have done a very serious amount of testing, and corner balancing of Pete's G8
http://forums.peddersusa.com/imagehosting/849be773e69134.jpg
Now Pete's G8 s corner balanced. Production vehicles with limited option lists are very consistent in weight distribution. Using the locking collar measurements as presets for your Xa coilover installation will get you close to a corner weighted vehicle. While the car would not be coner weighted, you starting point for corner weighting will be pretty darn close.
RF 33mm / FR 610mm
LF 29.7mm / FL 610mm
RR 30.5mm / RR 595
LR 38mm / LR 593
Now Pete and have have different goals in mind. Pete;s G8 is all about performance and it does exactly what what he wants. Me personally I do no like the back end look. but to get the G8 balanced correctly, it needs to be 15mm lower in the rear. ( GTOs and LXs are the same). But as long as the customer is not racing, I like the old school slight rake, and the stance of the G8 at 600 front and 610 rear.
Your thoughts.
mike
dms
Originally the heights were at 652-655 front, and 650-653 rears. After installing the Xas, we set the fronts to 600mm and the rears to 610mm. The front dampers at 16clicks and the rears at 12 clicks. This is a moderately aggressive setup.
Here are the before and after pictures:
BEFORE AT 652-655 FRONT AND 650-653 REAR
http://forums.peddersusa.com/imagehosting/749dd79fee4488.jpg
After WITH XA'S AT 600 FRONT AND 610 REAR
http://forums.peddersusa.com/imagehosting/749dd7a00761d5.jpg
Now we have done a very serious amount of testing, and corner balancing of Pete's G8
http://forums.peddersusa.com/imagehosting/849be773e69134.jpg
Now Pete's G8 s corner balanced. Production vehicles with limited option lists are very consistent in weight distribution. Using the locking collar measurements as presets for your Xa coilover installation will get you close to a corner weighted vehicle. While the car would not be coner weighted, you starting point for corner weighting will be pretty darn close.
RF 33mm / FR 610mm
LF 29.7mm / FL 610mm
RR 30.5mm / RR 595
LR 38mm / LR 593
Now Pete and have have different goals in mind. Pete;s G8 is all about performance and it does exactly what what he wants. Me personally I do no like the back end look. but to get the G8 balanced correctly, it needs to be 15mm lower in the rear. ( GTOs and LXs are the same). But as long as the customer is not racing, I like the old school slight rake, and the stance of the G8 at 600 front and 610 rear.
Your thoughts.
mike
dms