I'll have to look at my plugs to post a complete reply but here is a video of the exhaust on my Cheoy Lee B30. No batching here with my standpipe exhaust and downhill (or level) run to the transom for the water/exhaust mixture...
[YOUTUBE]o_kr96hwtCo[/YOUTUBE]
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Kelly
1964 Cheoy Lee Bermuda Ketch, Wind and Atomic powered
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