Intake manifold spacer NARAKU Jet Flow 139QMB/QMA aluminum CNC

CNC-machined aluminium intake manifold spacer from NARAKU. The Naraku Jet Flow spacer is designed to optimize flow in NARAKU 51 mm cylinder heads. The conical bore of the spacer allows unrestricted flow from 24 mm manifolds to 21 mm inlet ports on the 51 mm cylinder head (present in 51 mm and 52.4 mm NARAKU cylinder kits). The resulting Venturi effect forces fresh gas in and improves the volume in the combustion chamber. This results in an increase in torque. With appropriate adaptation work to the original cylinder head or intake manifold, the spacer can be used with a stock setup or tuning levels below 90 cc kits! Using a 24 mm carburettor is ideal, but not necessary. When fitting, ensure a flush fit between the spacer and the cylinder head. The spacer can accidentally be mounted 180 ° reversed. In this case, it covers the inlet channel.