Today Me and my Brother spent a couple of hours dummy building the bottom end. A matter of putting the main bearings in with the crank and attaching a piston and rod to it so we can make accurate measurements to work out compression. Everything went together nicely and with a little oil everything moved smoothly. Next up we need to get the head to the workshop and measure that too. The pistons are +1.5mm so the overall capactiy will be 1659 - the additional torque over standard 1597 will be very welcome.
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