Gen 3 coyote block6/9/2023 (Right) Here you can see MPR ported and polished intake ports. We've learned a lot from the Gen-3 exhaust port, and adapt that design for our Gen 1-2 head programs.” says Eichhorn. (Left)“The exhaust port is raised up slightly on a Gen-3 head, so the exit path is slightly different. Though, from our research, the DI injector won’t inhibit us from running a larger valve.” We actually haven’t had to go as far as swapping seats out on the Gen-3 heads for considerably larger valves because they flow so well from the factory. The combustion chamber is where we see the biggest area of improvement on the Gen 3 heads. Most of the machining time, though, is spent on the valve job machine. The naturally aspirated port has a little longer and straighter intake port, whereas the exhaust port on the blower program is as big as we can get it. Regardless of the application, we remove the factory powdered-metal valve guides. Eichhorn continued, “We first find out the application the heads will be used for - naturally aspirated, blower, or turbo.
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