Just a note that I have complied with the SB on pulling my slick mags on my 0360 A1A that has 570 hours TTSN. Mag drop and everything has always checked out ok but there was the occasional miss at idle that was barely detectable.
Anyway the impulse coupling was ready to fly apart. I can't believe that it was this bad a shape. I could lift the arms at least a 1/4"+, points were ok, bearings were not of a known manufacture and needed changing. The plastic gears in there were of an old vintage and were upgraded.
Installed with a set of fine wire plugs and runs sooooo smooth. I can't wait until I finish my inspection and get it in the air.
Unless you really know what you have in there, pull your mags and check them at the 500 hr mark. I don't think I would have made it another 50 hours without that impulse coupler flying apart.
There is no doubt in my mind that these mags were marginally overhauled when installed in the engine. Makes me wonder about the rest of the engine but it does not burn oil, compression is up in mid 70's and filter is clean. I just need to keep an eye on it.
Anyway the impulse coupling was ready to fly apart. I can't believe that it was this bad a shape. I could lift the arms at least a 1/4"+, points were ok, bearings were not of a known manufacture and needed changing. The plastic gears in there were of an old vintage and were upgraded.
Installed with a set of fine wire plugs and runs sooooo smooth. I can't wait until I finish my inspection and get it in the air.
Unless you really know what you have in there, pull your mags and check them at the 500 hr mark. I don't think I would have made it another 50 hours without that impulse coupler flying apart.
There is no doubt in my mind that these mags were marginally overhauled when installed in the engine. Makes me wonder about the rest of the engine but it does not burn oil, compression is up in mid 70's and filter is clean. I just need to keep an eye on it.
