Re: COZY: RE: [c-a] Lean of peak (LOP) Operations
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I did realize that I could balance them myself but apparently the old injectors on my engine do not come apart. At least an A&P friend told me that I had the old style and they could not be disassembled for cleaning or anything else. I thought new Lycoming injectors were something outrageous like $280 each but I just found some under $100 each. If all I have to spend is $400 it would probably pay for itself in fuel in not too long.
I have to find where to get replacements, I suspect there are not too many variations for a Lycoming.
Cozy IV N197DL
Cannon Creek Airpark 15FL
From: email@example.com <firstname.lastname@example.org> On Behalf Of Tim Andres
Sent: Tuesday, December 8, 2020 11:35 AM
Subject: Re: COZY: RE: [c-a] Lean of peak (LOP) Operations
Del, you dont need to spend a kilo buck to get the injectors balanced, more like $50 and some gas. You do a “Gami spread” test to determine which injector(s) are hitting peak egt first. Then order up the proper injector inserts for your injector to adjust them so they all peak at the same fuel flow. The injector inserts are something like $15 each IIRC, and the folks at Airflow performance can supply you with the Gami spread test instructions for the test and the inserts you need after you give them the flight data.
You say yours runs well 35-40° LOP, so its probably not too far out, but when nicely balanced you can lean past 80° or more. Mine would never start missing, all 4 would just quit at the same time.