Coolant Jacket/Cylinder Head
In order to properly cool a high powered aircraft engine we developed
a completely new cylinder head with integral coolant jacket. We
spent almost 7 years working out the design details. This new
cylinder head incorporates proprietary design techniques based
on over 30 years of experience designing liquid cooled cylinder
heads for high performance racing engines putting out 800HP and
more. The coolant jacket is designed to ensure that the hot sections
of the cylinder head are properly cooled and that flash boiling
and steam pockets do not occur inside the coolant jacket.
However, we did more than simply design a proper high performance
cylinder head and coolant jacket. We also wanted to make sure
that we would obtain the maximum performance possible from the
engine. We took a stock air cooled cylinder head to our porting
specialist and told him to go all out in improving the intake
and exhaust ports. We then cast the results of his work in our
If you are building a top performing engine you can be assured
that our intake and exhaust ports are as good as any professional
porting specialist could possibly make them - its unlikely that
any further porting of our heads would yield any additional benefits.
The coolant jacket/cylinder head is a 'dry sleeve' design. All
of the coolant is contained entirely within a single aluminum
casting. This design prevents the coolant from coming in direct
contact with the steel cylinder liner thus avoiding any possibility
of galvanic corrosion caused as a result of conductivity by the
coolant between the two dissimilar metals. Furthermore no seals
are required between the coolant jacket and steel liner eliminating
a possible source of coolant leakage.
Our design continues to use a well established method of joining
the cylinder liner with the cylinder head by use of an interference
threading between the two components. The result is a strong and
solid assembly on par with the air cooled version of the cylinder.