Atomic Performance Products - XR6T High Performance Conrods
Atomic billet steel conrods were designed from scratch with one principle in mind; use aerospace quality materials and sophisticated manufacturing processes to produce an extremely strong, light and durable connecting rod for the popular inline 6 cylinder Ford SOHC/DOHC engines, at an affordable price.
The Design and Evaluation Process
The Atomic engineering team set out to address these parameters by designing what many performance engine builders are now calling the finest conrod on the market for the Ford DOHC 6 cylinder engine.
Extensive CAD/CAM computer modelling was employed and produced a H-Beam design, which has an extremely high stiffness-to-mass ratio. The next step was to pick the correct materials, heat treatment and surface treatment processes to ensure durability under rigorous performance applications.
Next came FEA modelling (Finite element analysis) to simulate stresses on the conrods. This also entailed weighing every piston, gudgeon pin and ring set on the market and loading this information, plus stroke, rotating and reciprocating conrod values into our computer modelling software to calculate the stresses.
The greatest load exerted on a conrod in an engine producing 600 comes not from the force of normal combustion but from the tensile force exerted by the piston at top dead centre (TDC). At 5250 RPM the piston exerts a tensile load on the conrod of 1908 gs (-1693 kgs) at split overlap TDC reversal. If you increase maximum engine speed by only 1000 RPM to 6250 RPM, the TDC tensile load rises by 50.4% to 2870 gs. At 7500 RPM the tensile loading increases to 4132 gs, clearly demonstrating the Atomics design strength of 8000 gs means it has plenty in reserve.
Excessive loads at TDC are brought about by a high reciprocating mass and/or by increasing engine RPM, so it is essential to design reciprocating engine components with the lowest mass possible to minimize premature lower bearing shell bearing failure. This is particularly relevant to our customers who are turning their engines to 7500RPM+.
For more information, visit http://www.atomicperformanceproducts.com/conrods.html
A Better Way to Install Rods on Pistons
Installing spiral locks into a performance piston is a pain. I've found a
tool that can make your life a lot easier when it comes to building
For more information, please check out http://www.horsepowermonster.com/2012/l
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MORE INTERNET GOODNESS:
Con Rod Mods-01.wmv
Here's another connecting rod modification that John Edwards of Costa Mesa
R&D Automotive Machine performs to reduce reciprocating weight.
www.engine-machining.com (949) 631-6376
Street Fords DVD - Barra Strip Down
From 2007, host Racin' Jason strips down a Ford Barra (XR6) engine, then
catches up with Brad from Atomic Performance Products about their
Comp Cams - How it's Made
Competition Cams, one of the industry leaders in performance engine
equipment, walks PowerTV through the complex process of designing, creating
and manufacturing its high performance cam shafts.
Cobra Engine Build Part 1
This will be the first in a series on the engine build for my Cobra. This
is a 351W bored 0.030" with a 408 stroker crank. The intake was converted
to fuel injection and featured in a previous video. I will list components
as much as I can.
Connecting Rods Machine Shop Video-Engine Building DVD
Buy the "Basic Engine Building" DVD
Basic Engine Building DVD - Chapter 27: Connecting Rods
By now the connecting rods are ready for pistons. We recommend having the
machine shop clean your old pistons for you, if you plan to reuse them.
It's not fun at all by hand. Here we show you how they install the rod pins
into the connecting rods to connect with the pistons. Then they will
measure the pistons to determine the final bore size of the cylinder walls
before they are honed.
BoxWrench.net is a community and resource designed for automotive
enthusiasts. The Basic Engine Building DVD is over three hours of engine
building that covers everything from removal and disassembly to final
assembly and engine start-up. This is the ultimate DVD for any home
mechanic or engine enthusiast that wants to see a complete rebuild from
Teardown to Start-Up. This video can be used to learn how to work on almost
any type of internal combustion engine including V8, V6, Straight 8,
in-line 6 and even 4 cylinder engines. All of the interactive features and
menus will not work over YouTube.
This video is great for people interested in car repair, car care, and
restoration. As well as hot rods, muscle cars, performance parts, and Boosting horsepower. It can also help
you to gain knowledge for increasing fuel economy, how to lower your
emissions, and covers preventative maintenance to avoid little things like
Get the full DVD with all of the interactive menus, Tools section and
engine Glossary terms here...
Don't forget our Holley Installation & Tuning DVD. Sample clips on our
youtube page and at our store here...
New Transmission DVDs and a Differential Rebuilding DVD just added.
Educating the Automotive Enthusiast
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Atomic Performance Products - XR6T on-car Valve Spring Tool
On-car Valve Spring Removal Tool to suit Ford 6 Cylinder DOHC
Our Patented (Patent # 2006100221) tool is a simple device to facilitate
quick and easy removal of valvetrain components in Ford 4.0L VCT twin cam
Barra engines. The unique features of the tool are as follows:
• The cylinder head does not need to be removed to gain access to the
• Once the tool is fitted, all 4 valve springs per cylinder can be
• No special skills are required to use the tool
• The possibility of collets falling into the engine is greatly reduced
The tool saves many hours of labour when changing one or many valve
springs, valve stem seals or retainers - a mechanic can change all 24
springs in about 3 hours. Changing valve springs is very common due to the
varying tensions of standard springs and their rapid deterioration in
service, which in turn caused erratic idling and drivability issues. They
are also regularly changed in Ford turbo
vehicles as higher Boost can bring
about premature valve float.
To use the tool, simply remove the camshafts, fit the tool to number #1
cylinder and the 4 springs can be changed in about 10 minutes. Refit the
tool to the next cylinder in sequence and continue until all are changed,
refit the cams and the job is done!
For more info, visit: