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New Edge Cobras
Highest compression for boost?
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<blockquote data-quote="Myersprostatus" data-source="post: 12949461" data-attributes="member: 132449"><p>I actually have Sean Hylands book and in it as im reading he states that he always runs a higher compression engine with a centrifugal supercharger. He states that he keeps a flat top piston whether street or race. It states he experimented with centri superchargers on 4v engines with a lower compression and the results were loss of torque in the lower RPM range with no measurable change in ignition timing sensitivity in the higher RPM range. He then goes on to talk about how he runs 30+ lbs of boost and still maintains a flat top 10.2:1 compression ratio engine.</p><p></p><p>It says lower compression is ideal for an eaton style supercharger or turbo charger, but centris come on hard at about 3k rpms and like higher compression.</p></blockquote><p></p>
[QUOTE="Myersprostatus, post: 12949461, member: 132449"] I actually have Sean Hylands book and in it as im reading he states that he always runs a higher compression engine with a centrifugal supercharger. He states that he keeps a flat top piston whether street or race. It states he experimented with centri superchargers on 4v engines with a lower compression and the results were loss of torque in the lower RPM range with no measurable change in ignition timing sensitivity in the higher RPM range. He then goes on to talk about how he runs 30+ lbs of boost and still maintains a flat top 10.2:1 compression ratio engine. It says lower compression is ideal for an eaton style supercharger or turbo charger, but centris come on hard at about 3k rpms and like higher compression. [/QUOTE]
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Highest compression for boost?
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