ENGINE SYSTEM Engine Overview The cylinder blocks are made of the special cast iron and employ 5-bearing, deep skirt system. The cylinder heads have hemisphere combustion chambers, are of cross flow type arranged with V-type valves and high efficient combustion is intended. The camshaft is located on the top of the cylinder heads and driven by cog type timing belt. Dual type exhaust manifold is employed in order to reduce output loss by exhaust interference. G424 Service Manual Engine System 22