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View Full Version : NEW! AST 4100 coilovers on Miata (1st gen/NA chassis)


Fair!
12-03-2008, 06:16 PM
Miata shocks are hardly new for AST, but the first Vorshlag spec'd 4100 versions are - and this is that set. We are working with a local STS2 racer/tester (see setup details in our Street Touring Discussions forum) to work on installation tips, debugging new features, and provide race test data on the first set of NA/NB chassis Miata 4100s this week. Its in the shop and almost wrapped up. We've already sold a number of 4300 shocks for this chassis, and put 4100s on an NC chassis Miata earlier this year, but this is the first NA/NB set of single adjustables.

http://vorshlag.smugmug.com/photos/419715160_njxxy-M.jpg
Long shocks are the fronts, short are the rears. Knob is for rebound adjustment

http://vorshlag.smugmug.com/photos/419715278_q6cbA-M.jpg
Lower bushings are spherical. Upper is made to work with the stock NA/NB upper mounts or with (upcoming) spherical mounts

http://vorshlag.smugmug.com/gallery/6717983_45S6v = Miata 4100 Install Gallery

http://vorshlag.smugmug.com/photos/429741900_2hfb4-M.jpg
This was one of the ride height iterations, which was eventually lowered more at the rear (see the thread in Setup Discussions (http://www.vorshlag.com/forums/showthread.php?p=52342#post52342)))

http://vorshlag.smugmug.com/photos/429717111_252YC-S.jpg http://vorshlag.smugmug.com/photos/429714377_jrsoV-S.jpg
Left: OEM front is 14" long and 150#/in, rear spring is 11" and 90#/in (SOFT!). We are using 7" 60mm ID Hypercos, 550 #/in front, 350#/in rear

We've been working the specs and should have a 4200 double adjustable set-up built soon, as well as CStock and EStock specific set-ups for SCCA Stock class autocrossers. We tentatively have an EStock tester lined up as well. :)

Hanchey will post the dyno plots soon; they looked great.

Miatamoto
12-05-2008, 09:22 AM
I can't wait to drive it!

Fair!
12-05-2008, 09:31 AM
I can't wait to drive it!
Brian finished the install Wednesday night. We just need to corner balance and (ballpark) align it...

Fair!
12-09-2008, 09:34 AM
We've started a thread in the Setup Section to further detail the install and testing impressions, as well as the full prep diary of JJ's car. http://www.vorshlag.com/forums/showthread.php?p=52342#post52342