FLOW BENCH & WHY WE USE IT
The flow bench is for testing and optimising cylinder heads. It
measures airflow through the ports and is capable of pulling very high pressures via its powerful motors installed
inside the bench. The pressure drop is measured by the black box then the software calculates CFM and velocity (airspeed) which is critical for making power. Bigger ports are not always better, it's the size and shape which is important.
The flow bench is a vital tool as we can discover which combinations
work, such as different port shapes, sizes, different valve angles like
the 3 angle, 5 angle, full radius and different shapes on the back of the valve.
to flow cylinder heads at very high pressure's enables us to
see much more of what's actually happening with the heads rather than
flowing at some of the lower industry standard pressure's or less. At higher test
pressures we can approach flow separation amongst other things
with more understanding and caution. Every new or re-designed
cylinder head takes around 1 month to fully optimise including dyno
time. The shape of
the valve, seat combination and port size are all closely related.
Once the desired shape has been made we can replicate it to your
cylinder heads with a short turn around time. Everything that is
developed and tested ends up on the gas flow and prices page.
The cylinder heads are
measured before, during and after testing. The software is able to
produce airflow and velocity graphs to enable the operator to
clearly see the improvements or losses made.
Performance Seat Cutting
The peg fm1 is a precision piece of machinery that can cut any
seat angle you want to any depth in a short amount of time.
CJS cuts each angle separately for development work and when the
optimum angle for each type of head and valve combo is found, a
special 3-5 angle profile blade is then manufactured saving labour
costs to the customer. The peg is also used to remove worn seat
inserts and install larger higher performance ones.