Originally Posted by
Tim Kurcz
A SeaDoo blower was considered, but not large enough to provide for 88 cubic inches. Also, there was no reasonable way to install a gear drive to deliver the needed 1:7.25 step up.
For the purposes of the proof-of-concept prototype, custom .250" thick rods will be made of 954 aluminum bronze or bronze plated 4140 steel running directly on the crank (with 8:1 fuel/oil ratio.
For starting, two potential methods are envisioned:
1) Lucky: Crank the engine with the electric starter, inject prime through the starboard side (aft bank) port covers, and hope the exhaust gust is enough to spin-up the (undersized) turbo and provide scavenge flow.
2) Not so lucky: Crank the engine with the electric starter, apply airflow through the carb with a leaf blower, and prime the aft bank. This will most certainly provide enough flow to spin-up the turbo and provide scavenge flow.
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