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New Edge Cobras
little disappointed with my HP numbers
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<blockquote data-quote="Torch10th" data-source="post: 9992675" data-attributes="member: 15703"><p>Of note on the compression, the engine very well make 11.5:1 static compression ratio. However depending on how the cams are setup and where they are degreed at, the dynamic compression may actually be less.</p><p></p><p>This is a pretty common practice to get a high compression motor to live on pump gas. You get around all that static compression by bleeding pressure in the cylinder through having the intake and exhaust ports open slightly during compression and power strokes. Although I've never really got a grasp on the specifics of how it's done.</p><p></p><p>However that's an interesting piece of information given what your engine is doing. If say, during your intake stroke you've got your exhaust valves open a bit, this would limit the amount of air you'd be pulling from the intake side which is where your combustible oxygen is coming from.</p><p></p><p>This could account for your static airflow you see through the MAF at 5500 rpm.</p><p></p><p>Anybody comment on that?</p></blockquote><p></p>
[QUOTE="Torch10th, post: 9992675, member: 15703"] Of note on the compression, the engine very well make 11.5:1 static compression ratio. However depending on how the cams are setup and where they are degreed at, the dynamic compression may actually be less. This is a pretty common practice to get a high compression motor to live on pump gas. You get around all that static compression by bleeding pressure in the cylinder through having the intake and exhaust ports open slightly during compression and power strokes. Although I've never really got a grasp on the specifics of how it's done. However that's an interesting piece of information given what your engine is doing. If say, during your intake stroke you've got your exhaust valves open a bit, this would limit the amount of air you'd be pulling from the intake side which is where your combustible oxygen is coming from. This could account for your static airflow you see through the MAF at 5500 rpm. Anybody comment on that? [/QUOTE]
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little disappointed with my HP numbers
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