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HomeRC & Power✈️Aircraft🚁HelicopterEngines Plugs Mufflers Fuel › OS 105HZ-R Hatori Muffler and Hopper Tank Question
05-08-2013 11:22 AM  6 years ago
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jonathancassar

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Mtarfa, Malta - Europe

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OS 105HZ-R Hatori Muffler and Hopper Tank Question
Guys two questions I have on my new OS 105HZ-R which I am installing on a Trex 700HZ-R. Firstly I have a Hatori muffler (HA 968) from my previous 91 HZ engine. Is it possible to use this on the 105? This might be a stupid question but I checked the dimensions of both the HA 968 and the HA 2105 that Hatori released for the 105 and they are identical.
Secondly do you guys still use a hopper tank even with the R version for peace of mind or is it useless due to the pressurised tank?
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05-08-2013 07:06 PM  6 years ago
kvnm27

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Charleston SC US

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tip
Im not sure about the Hatori pipe..but I can tell ya in the beginning they said folks could use their OS 91 power boost pipe from their 90's on the 105. So I would venture to say yes. OH! quick tip the OS 105 pipe comes with smaller screws and the pipe mounts from the muffler side. the longer screws that we're use to seeing that are majority smooth will bottom out in the 105 and you'll start cross threading the crank case muffler bolt holes. Again, not sure about the hatori but be mindful of that. As for the header tank, you could still use it I would imagine but I ran mine with a OMI fuel magnet and it worked fine.
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05-14-2013 10:09 PM  6 years ago
jonathancassar

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Mtarfa, Malta - Europe

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Thanks kvnm27 for your feedback. Took note of the screws. Can anyone give me some more inputs as regards to the Hatori muffler and header tank questions on the 105 HZ-R?
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05-15-2013 09:32 PM  6 years ago
dchekas

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Farmington, CT

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There's no need for a header tank.

I've used a fuel magnet with both the -R and muffler pressure engines. It runs super consistent. The 1.05HZ-R is an awesome engine.
Team Align, Team Futaba, Team Byron Fuels, Team Thunder Power
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