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IAC Discussion Summary


IAC Discussion Summary

GAMI injectors

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Disclaimer: These IAC pages are developed by individual IAC members and do not represent official IAC policy or opinion.


Collected by: Kent Taylor


Question

Anyone have any experience with GAMI-jectors on their aerobatic mount? Good? Bad? Indifferent?

Kent Taylor kmtaylor@worldnet.att.net


Answers

I have GAMI injectors on the right engine of my Baron (which unfortunately is not aerobatic) so that I can easily compare the purported benefits using the Graphic Engine Monitors installed on both engines. The GAMI injectors do seem to help narrow the range at which peak EGT is reached as the engine is leaned. Note: this does not mean that peak EGT is the same on all cylinders. It also seems to reduce fuel flow on the IO550 by about 1-2 gal/hr.

In my opinion the GAMI injectors are only useful if you have a need to lean aggressively. Since I operate the Lycoming engine in my Pitts at relatively rich settings, I don't really see the need for them. Even when traveling to and from contests, I operate the engine well on the rich side of peak EGT, consequently I haven't considered them for the Pitts.

From: Sheldon Apsell SHELDONA@FS.MICROLOGIC.COM


I have fitted gami injectors to my C210n IO 550 they work great but only are of any use during cruise,ie allows leaning lean of peak.You lose a bit of power at this setting but reduce fuel burn by 4Lt or 1 us Gallon per hour plus the engine runs smoothly and burns very clean. I didnt find any benifit at high power settings ( over 65% power ) as you cannot lean out to this extent over 65 %. I dont feel there would be any advantage on an aerobatic engine except maybe during ferry flights. look up a good technical write up at the AVWEB net site

Eddie Edwards travel@ne.com.au



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Last Update: Sat Aug 29 16:11:25 2009


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