B20E with 2.1 pistons using 1974 block, balanced,
"D" type cam up one level called a "D
plus", not a lot of extra kW but great torque (Nm)
and reliable, regrind cam followers of course, balanced
crank shaft and rods, completely clean and flush block,
early model Mercedes oil cooler from square radiator model
that is now bolted below radiator to leave as much air
space as possible for cooling radiator (2 course), 740
thermo fan (cheap and easy to fit), out here cooling is
everything. 200 series faster starter motor that is
lighter and more efficient.
Head; Shaved 2.0 mm off, double valve springs with
custom made retainers, port and polish exhaust and inlet ports,
"R" sport copy extractors for exhaust system, new
custom made thermostat housing.
Photo 2 shows the HIF6 SU's that the 144R runs with BCK jets and electric fuel pumps and fuel pressure control adjuster, they bolted to a P1800 manifold using 3/8 BSW manifold bolts that need only to
re-tap the existing holes without any need to drill, this provides a much stronger sealing pressure for the gasket and help maintain bolt strength under race conditions.
made B20 2.1 head gasket, 55 amp alternator to keep 2 x
electric fuel pumps going. Change manifold bolts to
3/8" as they are stronger and more reliable, wont
snap during racing at the track creating more work, simply
drill out manifold holes suite.
Photo 7 shows engine being
lifted back into car, you can see the custom oil line
connector, thermostat housing and double valve spring
retainer also "R" Sport copy extractors (Photo
8). Also Mercedes oil cooler attached under radiator
(Photo 4) and 200 series quick starter motor. (Photo 6)
The standard M40 will do but if you have tracks with long
straight that mechanical Toyota Celica 5th gear box gives
the engine a rest as you travel that 1 km long main
straight e.g.. Eastern Creek’s main straight is 1 km
long. Heavy duty clutch and fork. Automatic transmission
fluid to get into the synchro' ring when cold start.
Photo's 9-12 show the Dellow bell housing that joins
up steel case Celica box to back of B20.
The 200 series Rally Pack dash is excellent for the late
model 140 dashboard as it contains all the instruments
needed and fits up very quickly and easily. Just install
oil pressure switch in block. Photo 3 shows 200 Series
Rally Pack Dash and original early 140 Motolita steering
wheel recovered in black suede.
This is made from an old Fire extinguisher as it is cheap,
strong, readily available and is already a pressurised
vessel well inside the requirements of either carburettor
or injection needs. Two electric fuel pumps will then be
used to pump from main petrol tank to surge tank with
return lines for excess fuel and fuel injection
requirements as well as in-line fuel filter. Photo 1 shows
Surge tank mounted in boot on rear wheel arch and shows
in-line fuel filter and return lines.
Front & Rear
The brakes of the old 140 are an excellent item to begin
with and require little modification, all that has been
done here is to install the 164 hubs and vented disc's
with competition pads and cut the backing plates away to
allow more air, our 140 brakes are a strong point on the
car as no one can out brake us around the tight twisty
parts of the track, same goes for the modified suspension
which is lowered around 80mm using Koni adjustable shocks
and custom lowering springs. Nothing flash or expensive
here but very efficient at race speed. Make sure you renew
ALL flexible rubber hoses, use braided if your race
governing body allows. Photo 5 shows 164 disc and
calliper, cheap and very efficient.
Note : I will write some more modifications through out
the year .