Aircraft powered airboat discussion.
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Ok I need some help. I have a IO-470. It's been sitting for awhile. We cranked it up today. After warming up we only had between 5 and 10 psi oil pressure at idle. Around 30 at mid range. Couldn't wind it up because we had it mounted on a flat trailer. I've been searching the site for the answer to this question. I took the factory aircraft starter of and got an Airtec rear set up. Is there something else I need to block off to get the pressure up? The factory accessory case is still on. I just made a plate to close the factory starter hole. I removed the filter and half assed cleaned it. I removed the oil pressure relief valve. It seemed fine. Not adjustable just screws in and out. Any suggestions would be great. I don't know aircraft motors. It was supposed to be a recent rebuild before I got it but it had sat quite awhile.
- John Fenner
- Southern Airboat Member
- Posts: 2631
- Joined: Tue Feb 14, 2012 12:26 pm
- Location: Miami(Cuba) Fl.
Measure the stub shaft diameter and length to mounting face, slide a piece of same size pipe into it, long enough that the cover plate holds it in place. If no size pipe available, take solid aluminum dowel and have it machined.
I never finish anyth,,,.
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