 |
|
Ford 4.0L 6 Cylinder SOHC and DOHC 998GT-A Long 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 factory turbocharged engine. We
witnessed numerous catastrophic engine failures
after consumers had undertaken simple
modifications such as free flowing exhausts and
cold air intake systems to otherwise stock
vehicles, so it became apparent there was a need
for us to engineer some hard core 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 as the engine internals
are almost directly taken from the original
inline 6 cylinder normally-aspirated engine of
the 1960s, so 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) with
total reliability. Following this we pinpointed
other engine weaknesses, such as the oiling
system, torsional vibration problems, cylinder
head lifting, airflow distribution problems at
high boost etc and engineered a range of
solutions.
We have seen power levels in excess of 1000KW
(1300HP) with our components, such is the scope
for power from these big cube 6 cylinder power
plants.
We have 2 power levels available; our
698GT-A
Engines are designed to handle up to 698KW
(935HP) and for the seriously power crazed, our
998GT-A Engines (998KW/1330HP) are just the
ticket!
MY2011 Atomic 998GT-A Long 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)
Phase 11 crankshaft preparation - magnafluxed,
checked for index/stroke, 2 stage Heat treatment
(normalise and stress relieve), 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 FatRods #306201 - bushed
for floating pins, ARP2000 bolts, cylindrically
ground/honed tunnels and pressure fed gudgeon
pins 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
Fully prepped Stage 4 cylinder head with 7/7
angle CNC machined valve job, chambers modified
and porting of inlet and exhaust. Fine Ra finish
on deck surface, chambers relieved and CCd,
spring tensions set up and new PC seals fitted.
Lifter preloads set for hi-RPM use
Atomic H/Duty Simplex timing chain
Atomic Induction hardened crank sprocket
Atomic Hi pressure timing chain tensioner
Precision balanced
Atomic Hi-Mass ANDRA/SFI approved harmonic
balancer
Atomic Race Spec NASCAR valve springs - good
for 38+lbs boost
Atomic Head stud kit - 12mm
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.
Atomic Duo-phased cams your choice of
profiles
Atomic gasket set inc SLS Teflon coated head
gasket and Viton crank seals
Fit new brass welch plugs
Atomic main cap support girdle and windage
tray
Spray block grey (or any other colour you
prefer)
Powder coated rocker cover colour is your
choice we have 6 colours available
Precision blueprinting and assembly of long
motor
Engine is fully test run in our engine test
cell - verify all vitals of the engine (oil
pressure hot and cold, ring bed-in, cylinder %
leak down, lifters bled, etc) and report
supplied.
Supply detailed specs report of engine and
run-in procedure sheet
Supply 8 litres of Castrol ProTec run-in oil
Supply genuine Ford oil filter
24 months warranty
Fitting one of our engines to a non-original
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!
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.
 998GT-A
Engines
#306490 SOHC Ford 6 cyl - EB-EL Ford
#306491 SOHC Ford 6 cyl - AU Ford
#306492 DOHC Ford 6 cyl - BA Ford
#306493 DOHC Ford 6 cyl - BF Ford
#306494 DOHC Ford 6 cyl - Retrofit Series
998GT-A Engines rebuild your engine
#306490-RB SOHC Ford 6 cyl - EB-EL Ford
#306491-RB SOHC Ford 6 cyl - AU Ford
#306492-RB DOHC Ford 6 cyl - BA Ford
#306493-RB DOHC Ford 6 cyl - BF Ford
#306494-RB DOHC Ford 6 cyl - Retrofit Series
|
