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Zenoah Inline Twin Marine Engine

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Zenoah Inline Twin Marine Engine

Old 10-22-2004, 10:56 AM
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jaycook
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Default Zenoah Inline Twin Marine Engine

check out this twin Zenoah engine. I thought about doing this. Has anyone attempted their own inline twin? Do you think they fire at the same time or alternate?

http://www.shark-racing.com/Imagens/...otZenoah02.jpg
Old 10-22-2004, 03:29 PM
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playtime56
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Default RE: Zenoah Inline Twin Marine Engine

jaycook,
Best bet is go to Gas Forum and check with FastRat. If it's gas, he knows! Best to ya!!!
Gordy
Old 10-22-2004, 03:55 PM
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jaycook
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Default RE: Zenoah Inline Twin Marine Engine

Gordy,

Thanks

Jay
Old 10-22-2004, 10:54 PM
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Ron Olson
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Default RE: Zenoah Inline Twin Marine Engine

I would assume that they fire 180 degrees apart. If they both fired at the same time the vibration would tear the boat apart.
Old 11-24-2004, 01:01 PM
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cneal
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Default RE: Zenoah Inline Twin Marine Engine

I have never built zenoahs that way but I have put together several homelites that way, The engines fire 180 out from each other notice how the 2 coil pickups are mounted on the front engine (1 on top and 1 on the bottom ) thats becaust there is only 1 flywheel. you could fire them both at the same time with no vibration problems but you would need a second set of mags it the flywheel. looks like a very professionial job done of mating those g23/26 engines
Old 12-21-2004, 02:18 AM
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Default RE: Zenoah Inline Twin Marine Engine

If the inline twin fired at the same time it would be twice the vibration than a single. The twin firing at 180 apart effectively helps to reduce vibration from the rotational/reciprocating mass BUT it does nothing for firing harmonics. If the engine was an opposed twin firing at the same time then you would have balance between firing/mass and end up with a very smooth running beast, under ideal conditions of course. Polo...

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