1972
Datsun 1600 Race Car
SPECIFICATIONS:
Body:
1972 shell
fully seam welded
6 point integral steel cage
Suspension:
Front:
Bilstein upside down gas inserts (unknown valving),
with 310lb springs. Whiteline swaybar (to be replaced).
Rear:
Spax adjustable shocks (valved to suit springs),
with 740lb springs
Nolethane for all bushes
except for front lower control arms and
rear A-arms
(which use genuine factory rubber replacements).
Alignment
and Steering:
Front:
Fabricated adjustable strut tops, adjustable lower
control arms, LJ Torana
radius rods, bent steering arms,
lower control arm spacers,
modified front crossmember lower
control arm pick ups.
Rear:
Modified rear crossmember, allowing adjustment for
camber and toe. This
has been done in such a way as to allow adjustments to be made with an
allan key, allowing incremental changes to be made.
Brakes:
Front:
300ZX 4 piston calipers utilising Pagid RS42 pads
and 280mm Saab rotors.
Rear:
200B calipers with Black Flash pads and 260Z rotors.
Master Cylinders:
dual master cylinders with balance bar.
All brake lines are braided
teflon, to eliminate hose expansion. Normal DOT 4/5 brake fluid is
used, with no problems.
Driveline:
Gearbox:
is a std SR20 Turbo box. A Holinger 3 gear close ratio box is planned
within the next 12 months, possibly using dog engagement.
Diff:
R180 4.6 diff with an motorsport clutch type LSD centre. Preload
is adjusted to suit the conditions.
Tailshaft: shortened
180B.
Half shafts: 240K
run reversed.
Engine:
SR20DE
Bottom
end: standard
Head:
modified inlet and exhaust ports, modified inlet valves.
Cams:
Ivan Tighe rally grind.
Power is from around 3000rpm
- 7500rpm.
Vernier wheels.
Induction:
quad throttle bodies based on Dellorto's breathing through a fabricated
air box.
Exhaust:
std exhaust manifold (to be replaced with custom extractors when I can
get some time to make them),
2 1/2 inch system, with
2 resonators.
ECU:
MoTec
Peripherals:
Pulsar radiator
Alloy fabricated radiator
hoses (to avoid blown hoses) with
silicon joiners.
Davies Craig thermofan (switchable
from either the dash or via
the radiator switch)
Adjustable oil pressure
switch (std oil pressure switch triggers the light too late - ~15psi).
Fuel
System:
Injectors: SR20 Turbo
Pumps: Ashdown's 15psi
priming pump for the surge tank, Goss VL Turbo main pump.
Tank: modified 1600
tank.
Fabricated alloy surge tank
Wheels
and Tyres:
185/60/14 Yokohama A032R
tyres
14 x 6 "Jelly Bean"
mags.
Interior:
Sparco "Touring" seat and
some unknown Corbeau seat
Sabelt 6 point 3 inch harness
(driver)
Sabelt 4 point 2 inch harness
(passenger).
Oil pressure, water temp,
fuel pressure and volts gauges. Oil light and change lights.
Tacho when testing/tuning.
Modified brake and throttle
pedals
Future
Mods:
Close ratio gearbox
Harder rear springs
Possibly Vented rear brakes,
depending on how the current setup copes with a bit of extra horsepower.
15 x 7 inch wheels (if we
ever get to run a 50 series tyre - current rules dictate a 60 series profile)
Full house engine based
either on a GTiR motor or an FJ20 - whichever head I can get more flow
out of.
Comments:
I'd just like to thank all
my friends who have helped me put the car
togther. Especially
Mark Banyard for his all his help and patience (most recently on the head)
and Warrick Hay for all the parts he let me scavange off him. There
are many others who helped me out too (Murray Coote from Enzed in Canberra
and Peter Maggs among them), but I don't want to turn this into some sort
of awards speech.......y'all know who you are.
See more of Tims car at http://www.angelfire.com/extreme3/group3j/ |