Polishing intake manifolds

by Eugene Klimenko in General Tech Discussion 6 years ago

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Re: Polishing intake manifolds

by Eugene Klimenko » 6 years ago

Eugene Klimenko

12 74 1

Here is example of balancing tube on VW based engine

ScreenShot2018-11-24at20.48.04.png (You do not have access to download this file.)

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Thank you said by: Garrett Wysocki

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Re: Polishing intake manifolds

by Roger Lee » 6 years ago

Roger Lee

127 5.21k 4.79k

This may sound like a wet blanket, but

The two key words here are VW engine. You can't use Continental, Lycoming, VW, Hurth or Jabiru when try to apply all their applications towards a Rotax. That VW is different than a Rotax and there are far too many things to list. It's loose tolerance, air cooled low compression, ect, ect.... It's just a different animal and has different specs and needs. Rotax has spent millions of dollars and man hours testing and designing and couple that with more than 5 million run hours and more than 50K engines and all running the majority portion of light aircraft in the world. Unless someone has dyno testing and thousands of hours on a different spec Rotax engine it would be just guess work at best as to any benefits.

Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-349-7056 Cell

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Re: Polishing intake manifolds

by Eugene Klimenko » 6 years ago

Eugene Klimenko

12 74 1

We are in experimental aviation and this was very good experiment. If someone not comfortable with this one - no need to change anything at all. It was improvement for sure on my engine. Time will tell.

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Re: Polishing intake manifolds

by Roger Lee » 6 years ago

Roger Lee

127 5.21k 4.79k

Just curious, What instruments and test did you run before and after to know it was better?

Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-349-7056 Cell

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Re: Polishing intake manifolds

by Garrett Wysocki » 6 years ago

Garrett Wysocki

1 572 1.45k

If it helps with the vibration I am all for it. Eric Tucker a Rotax factory expert explained and acknowledged the vibration (especially in the midrange RPM's) in a heavy maintenance class, it has to do with the with the different length of the intake manifold tubes between the front and back cylinders. This engine should have come with a vibration sensor and a warning light or meter on the panel. Motor vibration causes everything attached to wear out prematurely. It is good for Rotax parts and service business.

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Polishing intake manifolds

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