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Jett-Stream on a diesel

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Old 07-14-2013, 04:42 AM
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Petrovsky
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Default Jett-Stream on a diesel

Bob, could you maybe comment please: Is there any data for the use of the Jett-Stream tuned muffler on a diesel engine? Specifically the JS-30 on an OS .32 SX with Davis Diesel head. I would assume there are performance differences due to different combustion speed to a glow engine, just wondering if anyone has done some research. Thank you!Peter
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Old 09-13-2013, 09:10 PM
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No info? Am I in uncharted territory here?
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Old 09-14-2013, 01:13 AM
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Originally Posted by Petrovsky View Post
No info? Am I in uncharted territory here?
Bob has a hard time getting the forum to notify him of new posts here. Drop him an email, that's what I've done. And yes you're in uncharted territory when it comes to a Jettstream on a diesel. It doesn't have near the same effect as it does with glow fuel because the pressure waves move a bit slower and thus won't need to push as much fresh mixture back into the cylinder.

If you have a Jett muffler and a model Diesel engine, why not experiment?
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Old 09-14-2013, 01:35 AM
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Originally Posted by 1QwkSport2.5r View Post

If you have a Jett muffler and a model Diesel engine, why not experiment?
Thanks, that's the plan as soon as the weather improves. I'll send Bob an e-mail as well.
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Old 09-14-2013, 03:39 AM
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Originally Posted by Petrovsky View Post
Thanks, that's the plan as soon as the weather improves. I'll send Bob an e-mail as well.
Post back about your findings... I've been curious about this since you posted it originally.
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Old 09-20-2013, 11:31 AM
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Hi...

Thanks for writing... and sorry I have been away from RCU a bit....

No reason, technically, that the Jett-Stream would not work with the diesel. However there is a difference in how the fuel is used, how it flows, and the temperatures involved.

I have not personally done any testing or research on the tuned exhaust on diesel engine. But as you said.. diesel is a slighty "slower" process.

If the engine would indeed run at 15,000-17,000 rpm --- then you should get some boost from the tuned exhaust system.

MANY years ago I did play around with the OS28H engines on diesel. We were running those in small Crickets and for a brief time on a Kalt Baron (helicopters). The engines ran well, good power, and were particularly good in midrange.

Im sorry I can provide much more info -- but please, if you experiment -- feel free to post what you find back here

Bob
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