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ChadS
07-10-2005 15:10:53
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Re: Compression verses HP in reply to ChadS, 07-10-2005 14:32:54
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Let me ask this,, same cubic inch engines, but 1 is a low compression engine, and one is a high compression engine. Same cfm carb on both. How can the low compression engine draw as much air as the high compression engine? Ive always belived if the vacuum pressure does increase by a compression jump, air speed is increased, how can you get one reaction, and not the other? Now, lets talk about a Farmall M, not a V8, or a diesel. If I took the same small carb, both jetted the same, but different load settings, the low compression would have the load set leaner than the high compression. the high compression, may do 1 of 2 things,, 1 it is not enough fuel, and has to have the jet increased, or 2, the jet is large enough to handle the system change, but, if the jet is rich, that means you have more air pressure and drawing more fuel than air, then we install a bigger venturi, and it leans out, I belive it leans out because now, its letting in more air and mixing up that same amount of fuel set for the smaller venturi, but since there is more air, and air speed is dropped by the larger venturi, how can there be not more air entering the cyl? Chad
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