ISR Performance RamHorn Top Mount Manifold MVR SCH40 - Nissan KA24DE S13/S14

The ISR Performance RamHorn top mount turbo manifold for the Nissan KA24DE puts the turbo up high on the S13 and S14 240SX, where larger frame turbos fit and the hot side stays clear of the steering and accessory belts. ISR builds it from heavy duty schedule 40 weld-els for wall thickness that holds up to the heat cycling a KA-T sees.

Design points

• Schedule 40 stainless weld-el construction, built to resist cracking
• T3 turbocharger flange
• MVS style 38mm V-band wastegate flange
• RamHorn runner layout for even flow into the collector
• Retains air conditioning and power steering
• Test fit with turbos up to a 35 series frame without fitment issues

Chassis and engine

Nissan 240SX S13 and S14 with the KA24DE engine.

Recommended pairings

This manifold is the foundation of ISR's KA24DE top mount setup. Combine it with either of ISR's ball bearing turbos, the RX3076 or the RX3582, and the matching ISR top mount O2 housing and KA-T downpipe for a hot side that was designed to go together.

Not included

The manifold to head gasket is not supplied. ISR recommends its multi-layer exhaust manifold gasket for a lasting seal on a turbocharged KA.

Top mount layouts bring the turbo close to the hood and brake master cylinder, so plan on heat management such as a turbo blanket or heat wrap on the manifold, especially with A/C and power steering kept in place.

All ISR Performance products are designed for off-road use only.

Legal in California only for racing vehicles which may never be used, or registered or licensed for use, upon a highway.