H Series
The black sheep of the Honda engine family has enjoyed a recent revival of sorts, as the H series swap in a Civic has found new life with the H2B transmission conversions. Using the B series transmission allows H swapped Hondas to enjoy the wide range of B series transmission components like flywheels or clutches.
Further the shortened gear ratio and host of aftermarket parts for the B series transmission make it easily one of the most popular mods for anyone who owns a H series swapped Honda.
You can find the H series engines in the Honda Prelude, from 1992-2001.
Why the H series swap in a Civic works – Lots more displacement available to you, and the H2B or H series swap is also smog eligible for those who live in California or Arizona. With a few engine tweaks and tuning, achieving 220+ wheel horsepower isn’t very difficult.
Why the H Series Swap in a Civic doesn’t work - The H series engine is larger and thus has much more bulk to the equation of figuring out which is the best Honda engine swap. Things like balance shaft belts will add to the complexity of your engine maintenance.
Engine modification components won’t be as cheap compared to your B series peers, but there’s still a healthy variety of parts to choose from.
Mounts – Because the H series engine was never intended to fit in a Civic or Integra chassis, you won’t be able to combine factory OEM Honda mounts to complete your Honda swap.