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Thread: Engine vibration -- continued

  1. #1
    walt.buskey's Avatar
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    Default Engine vibration -- continued

    So I just got word today from Aerotec Engines, Ltd.... My O-320's done and about to be tested. As expected, a bit over $30K, this being the continuation of tracking down excessive vibration from a year ago, more or less -- finally pulling the engine and learning that the prop flange on the end of the crankshaft was tweaked, most likely due to a prop strike many years ago. Engine still ran great, but apparently was slowly shaking the plane apart.

    So on to a new chapter -- currently refurbishing all firewall-forward areas before re-installing engine mount & nose wheel frames in getting ready to re-install engine. Never a dull moment; maybe THIS will be the summer that 57A gets back in the air.

    DSC09630.jpg

  2. #2
    Administrator Steve Pierce's Avatar
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    Default Re: Engine vibration -- continued

    So what cost so much, a new crankshaft?

  3. #3
    walt.buskey's Avatar
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    Default Re: Engine vibration -- continued

    Yes, that was a big part of it. Original proposal shows a new TCM Prime crankshaft @ $4900, with lots of other new parts -- they found a lot of internal corrosion & pitting, so also: new camshaft, new tappets, four new Lycoming cylinders, plus a bunch of other "little" stuff. Parts total came to over $20K. Sounds a whole lot like a brand-new engine....

    Having zero experience in this area, maybe I should have done things differently, but it is what it is and I'll go with it. In any case, I sincerely hope the *#*# vibration is GONE!

  4. #4
    Pacerfgoe's Avatar
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    Default Re: Engine vibration -- continued

    sounds like you have a whole new engine built around your rebuilt rods...LOL
    Forrest Miller

  5. #5
    walt.buskey's Avatar
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    Default Re: Engine vibration -- continued

    So the engine should be coming back soon (according to USPS tracking, they got the Priority Mail check today -- after 10 days), engine mount frame and nose gear frame are waiting to be powder-coated, after a very close inspection of all tubes, nose gear fork's paint is now dry, and -- the very first bolt of the re-assembly is now going in and firewall now has a couple coats of Eastwood 1400F aluminum paint.

    Hopefully, the re-assmbling process (since I went through the whole baffles/seals thing last year) will go smoothly... but we all know how hopes often don't translate into reality! In any case, the re-building process has now started, albeit slowly. Hopefully, 57A will again be airworthy this summer.

    DSC09683.jpg DSC09684.jpg DSC09686.jpg

  6. #6
    gliderman's Avatar
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    Default Re: Engine vibration -- continued

    Walt
    you do NICE work

    shane-o

  7. #7
    walt.buskey's Avatar
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    Default Re: Engine vibration -- continued

    Thanks, I do try hard! Also, good lessons from Steve... wow... was it really eight years ago?

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