Fiat Motorsports (cont'd)
Fiat 124 Spider SCCA E-Production
Build Specifications
ENGINE
- 1608CC : .040" (1.0mm) overbore
- Pistons : 81mm forged, Venolia; 12:1CR w/ Total Seal rings
- Rods/Crank : Fiat OEM
- Overhead Cams : Pittatore 48-67 67-48, duration 295°- lift
11.35mm; Cambox oil drain-backs drilled to .25"
- Head : Ported/ polished; Fiat OEM stainless valves; performance
springs; valve clearance IN/EX .008/.010
- Oil Supply : Fiat OEM sump and pump; 13 row oil cooler
w/10AN fittings; 3 Qt. Accusump w/ manual valve;
Canton-Mecca remote 4" 8 micron oil filter
- Exhaust : 4-2-1 x 1.75" header w/ 2" straight pipe to rear
axle
- Ignition : Fiat OEM electronic; Plex 5 Distributor w/ GM
ignition module; Marelli HP coil; Magnecor 8.5mm
wires; NGK B8EGV plugs; timing = 38° @5000rpm
FUEL
- Carburetor : Dual Weber IDF 40 13/15's w/ 34mm chokes;
PBS intake manifold
- Fuel Cell : 8 gal. Fuel Safe Pro Cell w/ aluminum
container; trunk mounted in stock location
- Fuel Pump : Facet Silver Top (4-5 psi)/ trunk mounted
DRIVELINE
- Flywheel : 1438cc, PBS-lightened w/ three 0.5" steel
dowel-pins added for locating pressure plate
- Clutch : Fiat OEM pressure plate (Valeo) w/ Kwick Loc
200mm sintered 4-pad race clutch
- Transmission : Fiat OEM 5 speed w/ 1438cc bellhousing
- Differential : Fiat OEM w/ 4.3 gear ratio
SUSPENSION
- Coil Springs : 650 lb. front and 225 lb. rear
- Shocks : Koni Sport (yellow) w/ mid-to-high range
adjustment
- Front : 1" sway bar; Delrin bushings in control arms
- Rear : Adjustable steel-tube panhard bar w/ heim joints;
adjustable short trailing arms; OEM long trailing arms
w/ Nolathane poly bushings
- Wheels : 13 x 6.5 BWA w/ 12mm x 1.25mm studs
- Tires : Kuhmo V700 Vitoracer 205/60 VR13 (Vintage Racing)
BRAKES
- Brake Booster : Removed; OEM MC remounted on firewall
- Proportioning Valve : Rear OEM valve removed; Wilwood
rotary-style proportioning valve installed on tunnel,aft of
gearshift lever
- Calipers : Fiat OEM front calipers on both front and rear
w/ carbon-kevlar front and AXXIS Metalmaster pads rear
- Brake Ducting : Front brakes only
SAFETY & MISC
- Gauges : Auto Meter Sport-Comp w/ mechanical oil
press, and water and oil temps; 10K rpm tach w/ "recall"
- Fire Suppression : Onboard cable-actuated 5 lb.
Halon system
- Seat : Sparco Evo seat w/ 5 point harness
- Roll Cage : 8 point roll cage per SCCA E-Production
specs
ACKNOWLEDGEMENTS:
- Many thanks to John and Gary Baucom of Sportcar Authority, Charlotte,NC, for early design
guidance, and particular attention to initial suspension development.
- A very special thanks to Peter Krause and staff
of Krause and England, Raleigh, NC, for countless
hours of discussion and guidance on virtually every aspect of the project.
Without Peter's assistance and encouragement, this project would not have
been completed.
- Also, great appreciation goes to Guy Croft, author of
Modifying and Tuning FIAT/LANCIA Twin-Cam Engines,
for providing a "roadmap" for this project in his indispensable "workshop manual"!
Back to the top
Back to Fiat Racing
Fiat Motorsports