To start things off, WaterThunder Performance does not participate in peak engine dyno number
wars. Anyone can make peak horsepower claims, and the fact of the matter is, it's
much easier to produce peak dyno numbers than it is to produce broad useable power.
How much time does your airboat spend at wide open throttle anyway?
Airboat engines that produce more BROAD power perform substantially better
then engines that produces more peak power. This was noticed by NHRA ProStock in
the early 90's when it was discovered motors that produced higher peak numbers on
the dyno ran slower E.T.'s than a motor that produced less peak HP on the dyno.
This is because most of the work performed is not at peak or max RPM's. We will
not even get into those Dyno correction factors or how you can affect results just
by pull procedures and heat cycles. It is our opinion that someone who uses a dyno
to find 6 or so horsepower is using their dyno to build a better engine, and someone
using it to prove peak numbers is using their dyno solely for marketing purposes.
Any of these following components will achieve higher peak HP numbers:
a bigger carburetor, ported heads, bigger valves, bigger camshaft, bigger intake
manifold, and turning up the RPM's. All of these things will increase peak horsepower
numbers while reducing average power. Peak numbers look impressive on a Dyno sheet,
however a peak horsepower motor that makes 600HP will be out performed on the hill
and in the water by a properly designed airboat motor only producing 500HP.
At WaterThunder Performance our objective is to
build the best performing engine for your specific needs. This is why we tailor
each engine to the specific needs of the customer. A motor utilizing a 2.68:1 ratio
gearbox will require a different camshaft grind and timing curve than a motor utilizing
a 2:1 ratio gearbox, just as a 16ft boat requires a different timing curve and compression
ratio than a 13ft boat. From supply boats in Alaska to law enforcement boats in
Louisiana or Airboat manufacturers in Florida and the individual airboater, WaterThunder
Performance Inc. provides our customers with the most specific tailored airboat
engine packages available.
|