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Showing results for tags 'IO-390'.
Found 3 results
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Several of you wanted to see the final photo of the Oilamatic Pre-oiler installation. Here it is. Before starting, turn on the preoiler and wait a few seconds as the oil pressure comes into the green. Turn it off and start the motor. Works great. Weight and balance-wise, the preoiler is just a few pounds and is bolted to the top of the pilot's side fire-wall foot recess bucket thing (see the red-anodized preoiler pump. It takes oil from the sump and puts it into the oil filter. The IO-390 is definately heavier. Even though I went from a three-blade prop to a two-blade, there is 57 lbs more weight on the nose-wheel than before (bear in mind that the airplane had not been actually weighed in a very long time, so all the little adjustments to the weight and balance could be off by a significant amount I suspect. A lot had been done to the ACFT since it was last on scales). The ACFT oil temps run hotter than before (with oil cooler relocation and the ARI cowling), and it is no-longer an ACFT that you can do endless touch-and-goes on a hot, humid day in the SouthEast. John
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So, I finally got the new, sandwhiced-version ARI cowling and also the Lycoming IO-390A3A6, along with the Hartzell scimitar prop (decided upon going back to a 2-blade this time). Also did the Lasar Oil-cooler relocation mod and the oilamatic preoiler mod. I also did the ARI landing light lens cover mod as well and the Lasar brake caliper reversal mod. Here are a few pics of the project (and a photo of the plane PRE-upgrade. Will post completed photos later). The ARI cowling mod went on in fewer hours than it calls for (i.e. far less than the 12 hours alotted), but we wanted to look good, so we spent some time prepping it for paint and went way past 12 hours. That said, if you don't care much about aesthetics it goes on in just a few hours with two people working. The motor is hanging now but is definitely not a simple swap from the old IO-360A1A. We had to get a new bracket for the prop governor and the oilamatic pre-oiler installation takes up space over the pilot's feet (photos forthcoming) and requires some really expensive oil lines with unusual fitting angles (two TSO'd lines = $542) to work. The oil-cooler relocation mod from Lasar was straight forward. The patch for the cowling fit well and is barely visible.
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Do any members have any experience with the IO-390 in the J as a replacement for the A3B6D. Lycomming is now distributing 390 Re-mans that are about 2k over the price of a 360. I'm starting to have to think about it...
