Online Community of Zenith Builders and Flyers
March 2013, 675 hours, Low compression, blow by @ rings & two leaking intake valves. Major issue is with baked carbine on pistons, stuck rings and oil starvation @ top of heads. New pistons and new hallow rod & valve system assem. Need control of mixture so we are going with Rotec TBI, dropping Bing. Will report.
Comment
there is an article in kit plane mag , with in past 6 months . to do with cowling pressure . there should be 8 inches difference in pressure between intake and exit . they diagrammed the test method using clear plastic tube led from cavities to cockpit -2 separate tubes , in the cockpit make a vertical U in each tube . tape them to a ruler and pour water in each till levels are equal . go flying and adjust inlet and outlet untill you get 8" . it will probably get you think ing about in flight adjustable openings
l sure appreciate engine reports and pictures . hope the new system gives you the mixture control you are hoping for
WOW, that's a lot of issues at 675 hours. Any thoughts on a main cause?
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:
Flying On Your Own Wings:
A Complete Guide to Understanding Light Airplane Design, by Chris Heintz
Pro Builder Assistance:
Transition training:
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
Exlusive online community for active builders and pilots of Zenith Aircraft kits (Chris Heintz / Zenair light airplane designs).
You need to be a member of Zenith Aircraft Builders and Flyers to add comments!
Join Zenith Aircraft Builders and Flyers