K24 Intake Manifold Adapter with 1/8" NPT Port

The K-Tuned K24 Intake Manifold Adapter (KTD-K24-IM2) provides a straightforward solution for installing K20-style intake manifolds onto K24 cylinder heads. This adapter is engineered to be compatible with all K24 engine configurations, specifically including the K24Z-Series (R40) heads. It also offers versatility by allowing the fitment of K20 manifolds or modified RBC manifolds on 9th generation Civic Si vehicles, accommodating slight differences in the water bypass system without requiring an additional intake manifold adapter. A key benefit of this adapter is its ability to lower intake air temperatures. By design, it disconnects the coolant from the intake manifold, preventing heat soak. This reduction in temperature can lead to an increase in intake air density, as noted by Hondata research indicating a 1% drop in air density for every 5°F rise in intake temperature. The adapter also includes a convenient 1/8" NPT port, suitable for integrating a coolant temperature sensor, which is particularly useful in custom engine swap projects. Installation of the K24 Intake Manifold Adapter can be achieved through two methods: utilizing the integrated spring-loaded tab for a gasket-free seal or by tapping the cylinder head for a secondary mounting point. If tapping the head, specific tools are required, including a 6.5mm drill bit for the adapter's blind hole, a 5mm drill bit for the head, and an M6x1.0 tap. The process involves precise drilling and tapping to ensure a secure and leak-free fit. K-Tuned recommends using Honda Bond or a similar gasket maker for optimal sealing, especially when relying on the spring-loaded tab for constant pressure. It is crucial to note that the adapter must be mounted directly to the head, and no gasket should be installed between the head and the adapter. This direct mounting ensures the integrity of the seal and the proper functioning of the spring-loaded tab mechanism.