Swapping and Building with a 13B Engine

One of the major advantages of the 13B engine swap is that it allows you to exploit power-per-weight efficiency. Because it’s compact in length and width, retrofitting a 13B into many chassis becomes easier than you might expect. Often, it slips into tight engine bays where a V6 or inline-4 might struggle. The simplicity of the rotary design—fewer reciprocating parts, no camshafts, valves, or timing chains—also means fewer failure points and potential packaging headaches.

When building a 13B engine swap, you’ll need to certify your mount points, motor mounts, driveline alignment, cooling, intake/exhaust routing, and fueling. Thankfully, at All American Motors Hub, we carry custom mounting brackets, adapter plates, ECU harnesses, and cooling components specifically designed for 13B swaps. We understand that a conversion is more than just bolting the engine in—you’ve got to support it reliably under boost, extended RPMs, and sustained street or track use.