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My 2L B-Series N/A Project
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<blockquote data-quote="chris2000" data-source="post: 2238306" data-attributes="member: 11855"><p>On catalogue it calls for about 13.2-13.5:1 compression with 89mm crank and b20b block with b16a 42.7cc camber.</p><p></p><p>Since this build is using 87.2mm crank it will drop by about 0.2-0.3. Then combustion chamber is cut open for 85mm, so again will drop a few point but by how much really no idea yet as you know they don't cc the chamber.</p><p></p><p>My anticipation, when the build is complete, it should be about 13:1 compression. Too high for road use. And have to use high duration + lift + overlap to reduce the dynamic compression to make full use of the high static compression. Was told to reduce overall ignition timing to be safe. So 1st tune will run low ignition and see how much power is made with the toda c cams.</p></blockquote><p></p>
[QUOTE="chris2000, post: 2238306, member: 11855"] On catalogue it calls for about 13.2-13.5:1 compression with 89mm crank and b20b block with b16a 42.7cc camber. Since this build is using 87.2mm crank it will drop by about 0.2-0.3. Then combustion chamber is cut open for 85mm, so again will drop a few point but by how much really no idea yet as you know they don't cc the chamber. My anticipation, when the build is complete, it should be about 13:1 compression. Too high for road use. And have to use high duration + lift + overlap to reduce the dynamic compression to make full use of the high static compression. Was told to reduce overall ignition timing to be safe. So 1st tune will run low ignition and see how much power is made with the toda c cams. [/QUOTE]
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