Updated 12/19/11
Comparative Dyno
Information
Semi-Final
Dyno Information
Car Modification
Information
Alignment
Specifications
Additional Z3
Pictures
New Z3
Pictures
This is my dark green 1997 1.9 Z3 (or what Bill Spornitz likes to say "…use to be a Z3…"). From its humble beginnings it has been transformed into a "sleeper" of self imposed modifications.
I started with the brakes. The front rotors are now ventilated (as opposed to solid disks), they all have been gas slotted and cryogenically treated both front and rear. I use stainless steel Goodridge brake lines, ATE "Super Blue" and the pads are Porterfield R-4S (R-4 for the track). I also have solid brass caliber guides to get even pad wear/use.
The suspension has Racing Dynamics adjustable front and rear sway bars, Ground Control front sway bar links, Dinan rear sway bar re-enforcement, RTRS polyurethane offset lower control arm bushings, M3 control arms, Koni Sport adjustable struts/shocks, Ground Control adjustable caster/camber plates, Ireland Engineering adjustable rear toe/camber kit with Ireland Engineering urethane trailing arm bushings and Ireland Engineering urethane rear sub-frame bushings. Ground Control adjustable coil-over kits for both the front and the rear spring perches using Eibach racing springs. A HMS strut brace finishes off the package.
The drive train features a Quaife automatic torque biasing differential, a Powerflex urethane (yellow) differential/frame bushing, an AutoSolutions short shift kit and a 240mm aluminum flywheel with a Sach 240mm solid hub, semi-metallic clutch disk and a Sach 240mm M3 "Sport" pressure plate.
The engine features a Supersprint exhaust, a high flow catalytic converter, a "custom" Technique Tuning Stage III ECU with oversized injectors, oversized mass air flow sensor and an oversized throttle body. A BEGI supercharger with a +3 psi pulley (for a total of 10 psi) and intercooler give the car a "little" punch.
For "extras" I have a Stewart Warner 0-30 HG/ 0-15 PSI boost gage, a SplitSecond ARM1 air/fuel ratio gauge and a Bosk wood trim kit. A HMS windscreen keeps the wind down. Sparco Roadster seats help keep me in place. A BMW remote keyless alarm with a single zone perimeter sensor keeps the bad guys away.
For safety I have a HMS SportBar (roll bar) and a HMS HarnessBar that has been modified to hold a fire extinguisher. I use a Simpson 6-point 3" harness.
Lastly I have two sets of wheels, Racing Dynamics RGS 17x8 for the street and TSW Hockenheim R 17x8 for the track. My preferred street tires are BFGoodrich g-Force Sport 235/40ZR17's and for the track Toyo Proxes RA-1 235/40ZR17's.
I have done almost all the work myself. I drive this thing everyday and I teach in it at the track. If the sun even THINKS about being out the top is down!
-Karl
A "New" Track Toy!
I have "retired" the Z3 to garage queen and taken up with a "new" track car, a 1997 318ti! As you would expect, it's not stock or even close. First there is the S50 under the hood, a striped interior with a roll bar, Recaro SRD's, harnesses and a fire extinguisher just to start with...
The 318ti
318ti
Modification Information
The Formula Vee...
OK, I was into real racing, starting in a 1979 Zink Z-18 Formula Vee, then upgrading to a 1990 Tsunami FV. I held an International Conference of Sports Car Clubs (ICSCC) "Senior" license. I was a part of KAHN Team Racing and ran under association with the BMW CCA Club, Puget Sound Region. I had to give it up due to cost but I am still active in racing, coaching and crewing as needed.
Formula Vee
Pictures
The New Paint Job!
The
New FV!
The Cheetah SR1...
I'm back into racing....with a 1998 Cheetah SR1 D Sport Racer (DSR) powered by a 2006 GSX-R1000. It has an AIM MXL dash, Momo wheel, Quaife automatic torque biasing differential, Jongbloed wheels, Hurley Racing Products carbon fiber wing (8-3/8" cord with carbon fiber end plates), Sprocket Specialists split drive sprockets, Penske adjustable shocks and Wilwood Dynalites brakes. I'll race it in International Conference of Sports Car Clubs (ICSCC) as a FSR some time soon....
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