K24 Intake Manifold Adapter

The K-Tuned K24 Intake Manifold Adapter (KTD-K24-IM2) is a precision-engineered aluminum component designed to seamlessly bridge the gap between K24 cylinder heads and K20-style intake manifolds. This adapter is crucial for applications where a K20 manifold is desired on a K24 engine, addressing the common issue of the recirculation fitting being integrated into the K24 manifold but not present on K20 manifolds. It is engineered to be compatible with all K24 engine variants, explicitly including the K24Z-Series (R40) heads. Beyond its primary function, this adapter offers additional benefits. By design, it prevents coolant from being connected to the intake manifold, which can lead to reduced intake air temperatures. The manufacturer notes that Hondata data indicates a 1% drop in intake air density for every 5°F increase in temperature, suggesting that using this adapter can help recapture lost performance. Furthermore, the adapter features a 1/8 NPT port, providing a convenient location for installing a coolant temperature sensor, a common requirement in engine swap scenarios. Installation can be achieved through two methods: utilizing the integrated spring-loaded tab or by tapping the cylinder head. For the tapping method, specific tools are required: a 6.5mm or 1/4 inch drill bit for the adapter's blind hole, a 5mm or 13/64 inch drill bit for the head, and an M6x1.0 tap (both standard and bottoming taps are recommended for optimal thread depth). The process involves careful drilling and tapping to ensure a secure and leak-free seal, with Honda Bond or a similar gasket maker recommended for use with the spring-loaded tab to maintain a tight seal even when the adapter is not under pressure.