Block deck height

Jump to: navigation, search

@@ Line 14: / Line 14: @@
 If you have an engine other than a small block Chevy, you need to find the main bearing bore of the motor or snug a cap onto the saddle without a bearing and measure the diameter, then divide that figure in half for the radius. The remainder of the calculations are exactly the same as stated above for the SBC.
+==Compression ratio calculators==
+===Static CR===
+*[http://www.wheelspin.net/calc/calc2.html SCR]
+===Dynamic CR===
+*[http://www.empirenet.com/pkelley2/DynamicCR.html Dynamic compression calculator] by Kelly
+*[http://www.uempistons.com/calc.php?action=comp2 Dynamic compression calculator] by KB
+*[http://www.wallaceracing.com/dynamic-cr.php Wallace Racing DCR calculator]
+*[http://www.rbracing-rsr.com/comprAdvHD.htm RSR DCR calculator]
+{{Note1}} Some dynamic compression ratio calculators (like KBs) ask for an additional 15 degrees of duration be added to the IVC @ 0.050" lift point figure. This works OK on older, slower ramped cam lobes, but the faster lobe profiles may need to have 25 degrees or more added to be accurate.<br>
+{{Note1}}If the intake valve closing (IVC) point isn't known, it can be calculated:
+# Divide the intake duration by 2
+# Add the results to the lobe separation angle (LSA)
+# Subtract any ground-in advance
+# Subtract 180
+This result does not need to have any amount added to the IVC point, like the KB calculator calls for.
 <br><br>
 [[Category:Engine]]

Revision as of 20:01, 5 August 2013