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    Minimum Compression

    Even a zero static compression may not affect performance if the zero is not caused by a big hole in a piston or a piece of a valve missing. Charlie Melot Zeghyr Engines
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    Mattituck Still Alive

    They are calling it "Mattituck" but as I understand from friends who got the axe when they closed the real Mattituck facility only one employee, a parts guy, went to Fairhope. This is a "startup" operation bearing little resemblance to Mattituck other than the name.
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    Engine issue O-360

    Just had a customer shop solve a wierd power loss problem. A Cherokee 235 was intermittantly losing 10 MPH in cruise with no indication change on anything except speed. It could be made up advancing the throttle. Turns out it had a loose screw in the on/off valve mechanism on a manifold suction...
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    Engine running rough on throttle down after cruise

    If it pops as you are reducing throttle or immediately after it is a lean condition. If you are leaned at power reduction richen up a bit before moving the thrittle. If you are full rich then try carb heat to richen. If that solves it you are a bit too lean and there isn;t much that can legally...
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    Strange fuel problem on my Cherokee

    You CAN uy a new carb made by the "new" Marvel Schebler company. We have installed some with no problems. I will go +1 on a thorough check of the induction plenum and tubes. Also be sure the primer is not leaking if you haven;t already done that. Charlie Melot Zephyr Engines
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    A good discussion on oils

    Those roller tappets sure don't stop rust!
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    stc for beech muscateer a-23

    I'm pretty sure there is not an STC. Even if there were it would be a complete firewall forward change so even using salvage parts the cost would likely exceed the value of the airplane. Charlie Melot Zephyr Engines
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    Cessna 150 full throttle above redline

    IIRC from my 100+ engine related test flights in 150's the McCauley pitched to 48" will turn 2750 level at an IAS of 108 mph not in climb. Pitched to 50" it takes an IAS of 114 and sligh nose down to turn 2750. Charlie Melot Zephyr Engines
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    The Mechanic Wants to Talk to Me...

    Regarding the dent that ought to pull out with a suction cup and do a better job than trying to open it and push it out. As for hidden damage there's nothing in there to damage. on the mag if it is a Slick get a new one as overhauling them cannot be done properly at a reasonable cost. An IRAN...
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    Momentary constant speed prop overspeed

    You have the possibilities in the correct order. One other is the plug at the rear of the cavity at the front of the crank has come loose dumping governor pressure oil back into the crankcase. My bet goes on the governor. Charlie Melot Zephyr Engines
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    Morning sickness in the afternoon?

    Per Duncan it CAN happen. Good time to do the guide reaming part of SB388C. The penalty for not doing it can be a stuck valve leading to a broken tappet which necessitates a teardown. Charlioe Melot Zephyr Engines
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    Ok engine gurus

    There's plenty of steel "non contact" surface that could rust and flake. Magneto impulses rust like crazy so I'd pull the left mag and inspect the impulse and gear as well as the other gears partially visible with mag removed. Next would be steel pushrod tubes, pushrods, valve springs. The non...
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    Engine overhaul shop feedback

    Jeff, PM me at zephyrengn@aol.com. I tried to PM through the links here but it didn't work. Charlie Melot Zephyr Engines
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    Question about engine overhaul break-in procedures

    Most of us name brand "field overhaul" shops offer at least as good warranty as the factorys.
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    Shop Labor

    We flat rate engine removal and installation exclusive of parts or repairs. On anything else there are too many variables due to things like rusted nuts and bolts or unnrelated things that break in the process. Lycoming and Continental used to have flat rate charts but often they did not seem...
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    Impulse couplings

    TOM, JOOC what kind of impulse mag comes new or rebuilt without the impulse? I've bought and sold thousands of impulse mags all with impulses. Charlie Melot Zephyr Engines
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    Any experience w/ Buldoc Aviation?

    Bolduc is a good shop with a good reputation. Charlie Melot Zephyr Engines
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    Engine Logbook Entry

    Complied with! The engine overhaul AD list should say how it was complied with. Charlie Melot Zephyr Engines
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    Problem syncing props - bad governor or RPM Indicator?

    If you synch by ear and the needles are different the problem is the indicator. A 150 rpm differential will make a heck of a racket.
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    Steel vs Nickel Cylinders

    We sell a lot of engine overhauls with new Lycoming cylinders. Never had a problem. We do offer ECI Titan Cerminil as an option worth consideration for low utilization aircraft. I Have three 4 cylinder Lycomings with Cerminil cylinders chosen because they can't rust. Charlie Melot Zephyr Engines
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