Wanting to achieve maximum horsepower, the top-end was ported and polished by JG Engine Dynamics to the company's Pro Series specs.
To sustain high-rpm operation, stiffer valve springs and lightweight titanium retainers were utilized. With the GSR camshaft installed, we adjusted the rockers to the proper clearance.
The last component installed on the hybrid Honda powerplant was a Civic Si intake manifold.
DC 4-1 stainless-steel header
For faster revs, we installed a lightweight steel flywheel and dual-friction Centerforce clutch in the Integra.