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Custom Turbine Parts

KJ66 Model Jet Engine front cover and matching diffuser
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KJ66 Model Jet Engine front cover and matching diffuser


Price: 112.00 / 136.64

KJ66 Model Jet Engine front cover and matching diffuser
These two components are a matched set to provide a high efficiency Compressor diffuser and rigid engine front end.

KJ66 Model Jet Engine Front Cover. Standard Size
This component is machined from a single piece of high quality Aluminium to close tolerances.

The dimensions are
Outer cover seat 107.4mm (Fits the CV470 Gas canister)
O ring groove to suit 1.0mm diameter O ring
Inlet seat small diameter 75.0mm
Inlet Seat large diameter 85.0mm
Diffuser mounting holes 15 off 3.2mm diameter on an 89.0mm diameter

Note that there are no peripheral mounting holes as they will need to be drilled to suit your outer cover

CNC Compressor Diffuser for KJ66 Gas Turbine Jet Engine
KJ-66 Turbine Diffuser for use with the standard 66mm diameter compressor wheel or Similar.

Made from a single billet of High grade Aluminium this CNC machined Compressor Diffuser fits the KJ-66 Model Gas turbine Jet Engine or similar engine designs.
It is manufactured to very close tolerences and at around 90 grammes it also helps to provide a good power to weight ratio and has been machined to optimise efficiency.

Overall Diameter 107.4mm +0.02/-0.01mm
Height 20mm +/-0.02mm
Bearing seat Bore 22mm +/-0.01mm (to suit the 608 sized bearing)

A Total of 15 Wedge shaped top vanes optimised for ideal expansion angle and pressure gain including temperature gain correction (due to compression)

The top vanes are drilled and tapped to M3 on an 89mm diameter
There are a total of 40 Peripheral Blades
4 of the peripheral blades at 90 degree spacing are profiled to 4mm wide and are drilled and tapped to M3 to act as mounting points.
The remaining 36 Peripheral blades are of optimised design and have a true aerofoil profile cross section which provides higher efficiency than simple curved blades

The blade profile also produces additional expansion area for the gas flow which further raises compressor pressure and so efficiency.

Peripheral blade trailing edges are only 0.3mm to minimise turbulence behind the diffuser which could effectively narrow the exit cross sectional area

The inner surfaces have been gas flow profiled to reduce turbulence and gas flow restrictions

Overall machining tolerences are +/-0.01mm for critical dimensions and +/-0.02mm for less critical dimensions and +/- 0.05mm for non critical dimensions

This is a very high grade component that will provide your KJ-66 engine with high efficiency performance.
Note that we can also supply matching full compliment ceramic bearings.

Sportsturbine is part of the Sportsmoto Ltd Company