LaPouttre Racing Heads \ Engines
In Racing there Are Some Sayings:
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Restrictions
in the breathing of the engine is like a long distance swimmer with asthma, after a while all he can do is Stay Afloat |
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The
more it weighs, the more energy is required to overcome that Weight |
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In
Racing the only thing that matters is making it to the Finish Line FIRST And Taking the Checkered Flag |
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Speed Costs So How Fast do you want to Go? |
Methods to produce stronger engines with higher torque and
horsepower ratings rely on attaining different modification levels,
in steps. Modifications to Enhance Engine Performance involves
the proper balance, so components do not interfere with, or detract
from each other, but to Enhance Each Other
Ported and Flowed Heads attain the highest airflow efficiency from
any selected head castings. Untouched Aftermarket Racing head
castings make more horsepower, more than high performance stock
heads that are mildly reworked. Aftermarket Racing heads utilize
efficient approach paths into the combustion chamber, but still
need flow characteristic enhancements to perform at world class
power levels.
Combustion chamber design depends upon head chamber, valve
location, and the piston dome shapes and their relationship to
each other as they operate. The better the design, the higher the
compression, the cleaner the Fuel Burn and Flame Travel, the less
piston to cylinder wall side loading, resulting in less friction,
allowing for higher horsepower levels out of the same engine.
Nitrous injected engines require pistons to withstand high
temperatures, then immediately be frozen by a gas, while at the
same time producing higher pressure levels within the combustion
chamber. On the top of the piston, psi levels increase
exponentially, producing more horsepower instantly.
While These power increases are great, the top of the piston
changes from a expanded state (due to high temperatures) to
compact state when it is suddenly frozen. There are major effects
caused by instantly changing temperatures on the top of the
piston while the bottom of the Piston remains near the combustion
temperature. This temporarily skin hardens the top surface of the
piston while the underlying material microscopically remains
somewhat soft and pliable. After this type of surface hardening,
the piston surface material becomes Brittle and soon develops
Spider Cracks. Nitrous injection also temporarily changes piston to
cylinder wall tolerances due to differences in materials and their
different thermal expansion rates. This instant thermal change
creates molecular chaos, and if repeated over time, creates a
major Catastrophic failure resulting in the extra expense of a
engine teardown and rebuild. This is major problem is totally
avoidable by using the right components when building the
engine the first time, thus spending a little more money up front
results in saving allot more money in the long run, due to
replacement and labor costs in repairing the damaged engine.
Nitrous related Piston problems can range from broken piston rings
on the minimum to complete Piston Burn through or Piston Skirt
Failure. In the majority, aftermarket pistons, rods, and wrist pins not
specifically designed to withstand the extreme conditions of Nitrous
Injection will EVENTUALLY FAIL, plain and Simple. That is why
LaPouttre Racing Heads \ Engines uses only the finest custom
fabricated racing components in their Nitrous enhanced racing
engines.
Custom Stroked Steel Forged Crankshafts are essential for building
worldclass horsepower levels in unlimited and blown engines for
their respective racing classes. The longer the stroke, the more
cylinder volume displacement there is for the given bore area.
Increasing Cylinder volume results in Increased Torque and Higher
Horsepower Output. Long throw custom crankshafts provide for
unique racing characteristics when used with the properly configured
piston to head shapes and valve train components.
Custom Aluminum Block Assemblies are used for Extreme
Competition in Various forms of classed Motor Sports. The benefits
for Higher Horsepower with less weight interest both the drag and
the Marine racers in their respective racing classes. Custom
Aluminum Racing Engines and long blocks are available in
different levels of completion / assembly. Custom worked cast iron
blocks (and long blocks) are also available for the value
concerned commercial / industrial / marine Customer for their
individual specific applications. In many instances, cast iron is
preferred over aluminum. Primarily due to extreme conditions
resulting in displacing large amounts of heat over an extended
period of time, prohibiting the use of aluminum blocks. In these
extreme situations the strength and dependability of cast iron
warrants their usage, despite the additional weight disadvantage.
The Weakest Link in a Engine is the part that breaks when you
need it the most, and its probable that it's the part that is the Least
Spent on and has been Likely Overlooked.
That is why custom fabricated connecting rods and wrist pins
made from Exotic Materials and Composite Alloys are used on all
Unlimited Motors. Top Fuel Drag motors needs to transfer piston
energy to the Crankshaft by the most Strongest / Lightest
Connecting Rods available.
These Engines go from idle to astronomical power levels at a
fraction of a second, then produce maximum power for the next
5-6 seconds. The increased expense for quality connecting rods is
offset by the dependability and faster acceleration. Lowering ET's
is what the drag engine needs to make it consistently through the
Elimination Rounds, and then on to the Winner's Circle, Weekend
after Weekend, Event after Event.
All Engines / heads are available from turn key assemblies to
selected individual parts and components. Racing heads and
engine assembly prices depend upon preferred class specifications,
modifications required, and the amount of Specialty Racing
Equipment required. Different prices are available for the various
level of assembly completed. All parts packages are personally
designed for those who demand full control over their racing
engine assemblies and may only need limited services
Factory Crate Engines
Factory crate engines have become a reasonably costing way to
obtain a new engine, with a factory warranty. Our view is that these
engines are better than junkyard engines and are nicer than
having your cousin's friend's friend rebuild your present power
plant. But due to the assembly process in building these "factory
direct" power plants, engines sometime get less than the optimal
attention on the assembly line since it is moving so fast.
These few engines may have some problems may have been
overlooked. At LaPouttre racing, we blueprint allot of "crate" motors
before they are installed to their application. Upon various
observations during tear down inspections, we have found some
"Monday" and "Friday" built motors through the years. Though
these engines are under warranty by the factory, their quality is
substandard for the most discriminating master engine builder. At
LaPouttre racing, we will promise to clean out all the casting sand
that is left over in the block's nooks and crannies. We will make
sure that all the piston rings are not broken, and that any left over
metal shavings will be removed. We will take the time to blueprint
the engine so that the internal components meet strict specification
tolerances so your motor is not too lose or too tight. All motors are
correctly assembled with top quality gaskets, the proper sealants
and various stud mounting glues, initial bearing start-up lubricants,
used in the right amounts, in their proper places. This makes your
new factory engine far superior to a "Wednesday" motor. Then if
you have a specific application in mind, LaPouttre Racing can give
you the best consultation in how to achieve a dependable solution.
Minor additional costs incur with the use of top quality after market
components such as chrome Moly piston rings and internal bearings,
and top quality timing chains installed.
Check out our "Big 3" pages that are under construction to give you
ideas about how you want to go about modifying your "stocker" in to
the application that your engine is destined for.
Every engine gets the same Experience, Craftsmanship, Quality
regardless if the engine is for a Unlimited Top Fuel Drag Racer, or
for a stock racing class held at your local track, or even the guy
down the street. By using our new computerized engine building
simulators and chassis simulators, we can "program" your
specifications and come up with the best possible parts
combinations for your applications before you spend money on
any of your engine component selections. If you are serious
about having the best built engine available, for the race track, or
for the family taxi, then let LaPouttre Racing Heads \ Engines help
ensure you that your engine purchase is well worth the hard
earned money you spent
LaPouttre Racing Heads / Engines
Onlineperformanceparts.com
Performancepartsonline.com
Racingengines.com
108 Braddock St.
Bay City, MI. 48708 1-989-893-5028 Orders/Tech Line