Quote (Dellybeanz @ Feb 21 2018 05:34pm)
I assume turbo?
Of course, but perfect as can be to work with the turbo.
Exhaust manifold:
Styled after the Offenhauser Indy car manifolds, made of ductile iron casting. The decision to use a casting and ductile iron as the material is prompted by the desire to have a high-quality and high-durability piece. The design is slightly conical from the port to the turbine entry and thermal expansion is carefully controlled such that thermal warping is eliminated and straight line expansion assured. This manifold will flow well up to rates equivalent to 600+ bhp. The T4 turbine flange is machined precisely to eliminate the usual gasket.
Wastegate:
The Tial unit is a CNC billet aluminum top and stainless base. It's a race quality item with the highest temperature diaphragms available. We integrated the gate into the system in a very interesting manner. We utilized a layout similar to the Toyota IMSA GTP racers of a few years back.
- 347 Stainless Steel Alloy is used for valve and valve housing.
- High temperature silicone Nomex reinforced actuator diaphragm
- 17-7 PH Stainless Steel actuator spring gives consistent pressure at high temperature, resists "relaxing" at temperature to 900F
- Nitronic 60 Stainless Steel is used for the valve seat, and valve bushing the same material used in the higher level gates for reliability and longevity
- CNC Machined 304L 12mm thick weld flanges
Turbocharger:
The Garrett Airesearch TO4 series turbo. The Turbonetics 60-1 is the starting point and provides nearly infinite room for growth as engine modifications dictate. A ball bearing version was the choice for our system.
Turbine Outlet Pipe:
Stianless TO pipe, 3.0 inch in diameter and ideal for power outputs to 600+ bhp. We put the wastegate dump back into the exhaust far down the pipe to avoid power robbing turbulence right behind the turbine.
Intercooler:
The intercooler is an aluminum fabrication sized for approximately 500 bhp. We used bar-plate cores which yield the greatest efficiency at the lowest pressure drop. We also decided to utilize a vertical charge flow configuration to increase the internal flow area and reduce the internal friction of a typical horizontal flow configuration.
Anti-Surge / Bypass valve:
The by-pass valve is an air diverter when cruising so the turbo will not need to make boost that would only pile up on the throttle plate and load up the blower.