INDUCTION

SU INDUCTION – RG has tested its new cylinder head on a dynamometer to help understand the relationship between the head and the SU induction system. This has lead to the development of custom jets and a tuning procedure that coordinates the two components properly for a reliable result. RG has built an Electronic Spark Control Module (ESCM) that is able to record the air/fuel ratio during test runs. This data can be sent back to RG for analysis so that proper tuning can be confirmed.

WEBBER INDUCTION – RG is developing a Webber carb kit that will include all parts necessary to retrofit Webber carbs to our cylinder head. This kit will include all of the proper jets to optimize the Webbers for the RG cylinder head. It will also include choke parts and a custom air cleaner. RG has built an Electronic Spark Control Module (ESCM) that is able to record the air/fuel ratio during test runs. This data can be sent back to RG for analysis so that proper tuning can be confirmed. There should be more news on this as we complete our development work this summer.

VINTAGE EFI INDUCTION – RG is currently developing a Vintage Appearance Electronic Fuel Injected (EFI) induction system for the XK-6 engine. It will be based upon a triple two barrel configuration similar to the 3.8 Series I E-type intake manifold system. It will have six identical runners instead of the offset runners that are found on stock Jaguar XK manifolds. This will create balance across the induction system, which is not possible with the stock systems. The fuel injectors are hidden underneath the runners so the manifold appears to be original and of the period. Special fuel injectors have been chosen to direct the spray pattern towards the center of the runner for better atomization. This manifold will also have the water manifold separated from the runners to reduce the temperature of the incoming air. This was not possible before EFI because the carbs could not properly atomize the fuel if the runners were too cold. Lowering intake temperature allows for more fuel to be mixed with denser air. This manifold will be part of an entire EFI induction system option that will include period reproductions of the original SU carbs as throttle bodies. RG intends to offer this system towards the end of 2018, as it is in testing at the moment.