Car is back from its annual development visit with
@riley_rsmotorsport . It’s always enjoyable giving Riley a few guidelines and letting his creativity fill the gaps. The end result is consistently pure engineering artwork.
In this case, a fully bespoke turbo system with efficiency as the primary objective. The OE log-style cast exhaust manifold was replaced with a much more free-flowing, 3D printed Inconel tubular header. This new design positions the
@garrettmotion G25-700 as low in the chassis as possible, providing a marginal CG advantage. The existing 3D printed Inconel fender-exit exhaust was retained, with a newly printed lower section grafted on to accommodate the upgraded turbo housing and lower placement.
On the intake side, a titanium charge pipe was fabricated to replace the previous, more complex setup. Removing the secondary heat exchanger in this section allowed for a shorter, straighter configuration. This provides a fractional CG improvement by moving weight aft. The system now relies on a single large
@bellintercoolers water-to-air heat exchanger, sandwiched between 3D printed aluminum intake runners and a plenum featuring internal guide vanes to promote even air distribution. All sitting above a phenolic spacer to reduce heat transfer.
The previous port injection setup, which was located beneath the intake manifold, is now integrated directly into the intake runners for a more precise and direct spray pattern. This is supported by a custom-machined fuel rail.
A quick stop at
@jmp_autowerkz to finalize additional sensors and higher capacity fuel system, then the car will be ready for dyno next week.
@strommotorsports , who provided valuable guidance on this turbo system, will again be handling tuning as we push the B48 platform further than anyone has before. Peak numbers may not be the goal, but we do expect a meaningful increase across the board.
Round 1 of
@globaltimeattack is just around the corner. Clock is ticking.
