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Ryan Underwood wrote:
> k wallace > writes: > > >>Why would anyone use the interference design? It doesn't sound like it >>increases performance. It just sounds like (from the bit of reading i've >>done today) that you can make the engine physically smaller and get the >>same power out of it. Is that right? > > > I don't know what I'm talking about, but I would speculate that it allows you > to get higher compression out of a shorter stroke or a smaller cylinder bore. > The piston at TDC is flush with the top of the cylinder, so removing room in > the cylinder head part of the combustion chamber increases the compression. > And brings the valves closer to the piston. > pretty good guess... high compression is one reason, optimum combustion chamber shape is another. Valve reliefs in the pistons aren't good for either compression or efficient combustion. nate -- replace "fly" with "com" to reply. http://home.comcast.net/~njnagel |
#13
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k wallace > writes:
> what does running the radiator 'open loop' mean? Shorthand for "let the engine warm up until the thermostat opens and water starts circulating through the radiator". |
#14
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k wallace > writes:
>Why would anyone use the interference design? It doesn't sound like it >increases performance. It just sounds like (from the bit of reading i've >done today) that you can make the engine physically smaller and get the >same power out of it. Is that right? I don't know what I'm talking about, but I would speculate that it allows you to get higher compression out of a shorter stroke or a smaller cylinder bore. The piston at TDC is flush with the top of the cylinder, so removing room in the cylinder head part of the combustion chamber increases the compression. And brings the valves closer to the piston. |
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