Hi,

this concerns my JAb 3300 on a Zodiac 601 XLB.

any advice as to how to lower the engine noise? the first 30 to 40 hrs it was really quiet but lately even with earphones the sound is very loud.

It seems as if there is some leakage between headers and muffler. any ideas  for some sealing of the gap?

Thanks in advance

Views: 399

Reply to This

Replies to This Discussion

Ditto Jeff's remarks! Don't bother with muffler sealants, etc., as they will not hold up! I installed the CAMit stainless steel header/muffler seals and they really seal well. The way they're designed, they should continue to "bed-in" and seal even better as time goes on.

I'm not sure how much a leaky header/muffler joint will contribute to overall noise, however ... I've always thought the Jab 3300 is a relatively quiet engine - it definitely is the smoothest-running engine out there! However, my STOL 750 has firewall and cabin insulation and I suspect that helps greatly - especially insulating the cabin floor since the exhaust exits exits under there.

I've always had Bose ANR headsets that really work well - pricey, but there are lots of competitors at lower price points.

John

N750A

Thanks a lot for your interest and advice

I will look into the CAMIT seals right away.

Happy flying!!!!!

RSS

New from Zenith:

Zenith Planes For Sale 
 

Classified listing for buying or selling your Zenith building or flying related stuff...


Custom Instrument Panels
for your Zenith
:

Custom instrument panels are now available directly from Zenith Aircraft Company exclusively for Zenith builders and owners. Pre-cut panel, Dynon and Garmin avionics, and more.


Zenith Homecoming Tee:


Zenair Floats


Flying On Your Own Wings:
A Complete Guide to Understanding Light Airplane Design, by Chris Heintz


Builder & Pilot Supplies:

Aircraft Insurance:

 
 

West Coast USA:

 
Pro Builder Assistance:

 

Transition training:

Lavion Aero

K&S Aviation Services

Aircraft Spruce & Specialty for all your building and pilot supplies!

How to videos from HomebuiltHELP.com

Developed specifically for Zenith builders (by a builder) these videos on DVD are a great help in building your own kit plane by providing practical hands-on construction information. Visit HomebuiltHelp.com for the latest DVD titles.

© 2024   Created by Zenith.Aero.   Powered by

Badges  |  Report an Issue  |  Terms of Service