Quote:
Originally posted by snowman
Assemble the engine, using plenty of grease on the rings. Put a piston at tdc with valves closed. On an engine stand, fill the hole via the empty spark plug hole with water and antifreeze solution until you just reach the bottom of the spark plug hole. record this volume. Now add this volume to the displacement of a single cylinder and divide it by the measured volume. This is the EXACT CR, no BS, NO fudging. Turn over the engine to dump the water/antifreeze mix.
50 cc syringes’ from an animal supply house (feed and tackle shop) are ideal for this.
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so the volume of a single cylinder on my 89mm x 66mm is:
8.9 x 8.9 x 6.6 x .7854 = 410cc's correct?
Animal supply house? OK