 
 |
|
Ford 4.0L 6 Cylinder
SOHC and DOHC Short Engines
Although we have been building high performance
engines since 1978, it wasnt until 2004 that we
began development work on the Ford 4.0L DOHC 6
cylinder Barra turbocharged engine. We
witnessed numerous catastrophic engine failures
after consumers had undertaken simple
modifications such as free flowing exhausts and
cold air intake systems, so it became apparent
there was a need for us to engineer some
solutions to address the inherent factory
weaknesses.
The engines possess an abundance of untapped
power with their large (factory fitted) Garrett
GT35/40 turbocharger, however because the engine
internals are almost directly taken from the
original inline 6 cylinder NA
(normally-aspirated) engine of the 1960s, they
were not designed to handle 21st century
boost-assisted power levels.
We initially developed a lightweight yet durable
billet conrod to work with the 99.31mm (almost
4) stroke crank and before long our customers
were making 450+ RWKW (700+ flywheel HP).
Following this various other engine weaknesses
came to the fore such as oil pump problems,
valvespring tension, excessive torsional
moments, crankcase flex, inadequate cylinder
head retention, airflow distribution problems at
high boost etc and engineered a range of
solutions to suit.
We have seen power levels in excess of 1350KW
(1800+HP) with our engines and components, such
is the scope for power from these big cube 6
cylinder power plants.
We have 3 power levels available; new for 2014
is our StreeTorquer 550 engine, designed for
hi-performance street cars; the venerable
698GT-A engine has been upgraded for 2014 with a
few new tricky bits and finally for the
seriously power crazed, our 998 Series
powerplants are just the ticket!
A short motor comprises a race prepped block,
heat treated crankshaft, Atomic billet
Superleggera conrods with pressurised oil feed
to the gudgeon pins, forged pistons with crown
cooling, turbo rings, coated competition
bearings, windage tray, hi-temperature silicon
rear main oil seal, blueprinting, balancing, and
precision assembly, ready for the fitment of
your head, sump and accessories.
Fitting one of our engines to a nonoriginal
application is no problem with our Retrofit
Series. No need to use the original Ford
computer, harness and gearbox - just hook up
your choice of turbo or blower, add your
favourite ECU and you will have the baddest 6
powered car around!
And you also have the option of either an engine
built to your requirements or we can rebuild
your own... the choice is yours!
MY2014 Atomic 698GT-A Short engine specs
Ultrasonic tested block
in 24 spots per block thick walls are required
(we reject 4 in 10 for being like Cleveland
blocks - too thin in spots due to core shift)
Full crankshaft preparation - magnafluxed,
checked for index/stroke, 2 stage Heat treatment
(normalise/stress relieve and temper),
reground/indexed as required, micropolished
journals and chamfered oil holes.
Cosworth F1 Series pistons 8.5: comp
ratio and include coated skirts, anti detonation
bands, polished crowns, H/D pins and piston
crown cooling - an Atomic exclusive. Totally
silent operation.
Cosworth nitro carburised steel turbo rings
Atomic billet Superleggera conrods #306200
698kW 6.060 C/C, bushed for floating pins,
ARP 2000 bolts, cylindrically ground/honed
tunnels and pressure fed gudgeons - an Atomic
exclusive
ACL Competition bearings with extra oil feeds
for little end bushes
Fully machined block inc torque plate honed
cylinders, decked to crank centreline, main
saddle alignment checked etc
Race spec clearances to suit the intended
usage
Atomic Induction hardened crank sprocket
Precision balanced
Atomic Billet gear oil pump complete with
EDM cut chrome moly gears, billet end plate
(hard anodized), Grade 10 fasteners, high flow
bypass circuitry and blueprinted clearances.
Fit new brass welch plugs
Spray block grey (or any other colour you
prefer)
Precision blueprinting and assembly of short
motor
Supply detailed specs of completion of engine
and run-in procedure sheet
12 months conditional warranty
Atomic engines and components are engineered,
dynoed, track tested and fully warranted to give
you confidence you wont be let down in the heat
of competition.
 698GT-A
Series - New Short block assemblies
#306400 SOHC Ford 6 cyl - EB-EL Ford
#306401 SOHC Ford 6 cyl - AU Ford
#306402 DOHC Ford 6 cyl - BA Ford
#306403 DOHC Ford 6 cyl - BF Ford
#306404 DOHC Ford 6 cyl - FG Ford
#306405 DOHC Ford 6 cyl - Retrofit Series
698GT-A Series Rebuilt Short block
assemblies
#306400-RB SOHC Ford 6 cyl - EB-EL Ford
#306401-RB SOHC Ford 6 cyl - AU Ford
#306402-RB DOHC Ford 6 cyl - BA Ford
#306403-RB DOHC Ford 6 cyl - BF Ford
#306404-RB DOHC Ford 6 cyl - FG Ford
#306405-RB DOHC Ford 6 cyl - Retrofit Series
|
