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Thread: Musketeer engine STC's

  1. #1
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    Musketeer engine STC's

    I've been looking at a 1965 Musketeer and really like the plane, but
    I've been reading about how problematic it is to overhaul the
    engine...does anyone know if there is an STC to put a more popular
    engine in the Musketeer (like a Lycoming) or which shops I could
    contact to get an estimate on an overhaul of a Continental IO346?

    The plane I'm looking at is nice and way more fun to fly than any small
    Cessna I've ever been in, but it will need an overhaul in 1-2 years
    and I don't know if it is worth buying something that could be a huge
    headache and exceedingly expensive to keep flying if there are not
    options to put other engines in the plane. Any advice or places to
    look?

    Also, I keep reading mixed reviews on the performance of the engine.
    Does anyone know why it is unreliable and was replaced in later
    models...did it just require more expensive maintenance or was it
    prone to failure? I can't find much on this engine except that it was
    quickly replaced (for reasons I'm unaware of) and that parts are
    currently nearly impossible to find for it. Any info would be much
    appreciated.

    Thank you
    Last edited by Clinderman; 02-05-2019 at 09:25 PM. Reason: c.t.

  2. #2

    musketeer engine stcs

    The IO346 is not unreliable, but was a short production run and Continental only built around 1,000. I can only speculate as to who Beech elected to change to Lycoming. There is no STC to change the engine available at the present time. The scuttlebut is that one existed years ago that allowed a change to an O320 Lycoming, but we have not been able to track down who owns the STC or it it ever really existed. A couple of airplanes have been converted to O360 Lycomings under one time STCs but the conversion was quite expensive. The IO346 can be rebuilt if you have a good Crankshaft and Crankcase. I had mine rebuilt by a local shop about 12 years ago. The shop is now out of business, but the owner has a new business. I think that he would do a field overhaul for an IO346 today, but he is on the wrong side of 65 and I am not sure how long he plans to remain active. My overhaul was mixed with some other work and the paper trail was not good enough
    for me to know exactly how much the overhaul was, but I think around $12,000 in 1995. I would expect more today.

    Many engines do not make TBO. TBO is predicated on the aircraft flying that many hours in 7 years. Most of the time they do not. Since TBO is a guideline and not a requirement for Part 91, we mostly run our engines 20 years or more between overhauls. I am happy if I get to fly my airplane 100 hours a year, but most years I do not. I have not flown it in over a year because of a difficult annual and some personal considerations which kept me away.

    Good luck with your purchase, or further search.

    Willis, N8886M

    ----- Original Message ----
    From: jsmith123456789jsmith <jsmith123456789jsmith@yahoo.com>
    To: musketeermail@yahoogroups.com
    Sent: Friday, December 21, 2007 1:29:35 AM
    Subject: [musketeermail] musketeer engine stcs


    I've been looking at a 1965 Musketeer and really like the plane, but
    I've been reading about how problematic it is to overhaul the
    engine...does anyone know if there is an STC to put a more popular
    engine in the Musketeer (like a lycoming) or which shops I could
    contact to get an estimate on an overhaul of a continental io346? The
    plane I'm looking at is nice and way more fun to fly than any small
    cessna I've ever been in... but it will need an overhaul in 1-2 years
    and I don't know if it is worth buying something that could be a huge
    headache and exceedingly expensive to keep flying if there are not
    options to put other engines in the plane...Any advice or places to
    look?

    Also, I keep reading mixed reviews on the performance of the engine.
    Does anyone know why it is unreliable and was replaced in later
    models...did it just require more expensive maintenance or was it
    prone to failure? I can't find much on this engine except that it was
    quickly replaced (for reasons I'm unaware of) and that parts are
    currently nearly impossible to find for it. Any info would be much
    appreciated.

    Thank you



    Join BAC today and be a part of the ONLY Type Club for the Musketeer
    series!

    www.beechaeroclub.org


    Yahoo! Groups Links








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  3. #3

    musketeer engine stcs

    IO 346

    We picked up a great Musketeer this summer with the 346 in it. We understood the risk, but the price and the performance caused us to press on. We have been very pleased with the performance of the aircraft and the engine.

    Late this fall I went out early one morning to fly and didn't have any oil pressure on start-up. Long story short, one of the piston skirts had separated from the piston, a piece of the scraper ring ended up in the sump and blocked the pressure relief valve. The good news, I was on the ground, at home and there wasn't any extensive damage to any of the rest of the engine. It's been a bit of a challenge, but we have located all the necessary parts to repair the engine, thanks to some diligent work by our local shop and some leads from the Musketeermail group.

    We are looking forward to having our bird back in the air and enjoying it's great capabilities.

    It's aviation. It can and will always cost great sums of money, some days more than others. It's part of the adventure, but man is it fun to fly in such a great performer with room to spare.

    Roger

    ----- Original Message ----
    From: WILLIS COOKE <wrcooke@flash.net>
    To: jsmith123456789jsmith <jsmith123456789jsmith@yahoo.com>; musketeermail@yahoogroups.com
    Sent: Friday, December 21, 2007 8:14:48 AM
    Subject: Re: [musketeermail] musketeer engine stcs














    The IO346 is not unreliable, but was a short production run and Continental only built around 1,000. I can only speculate as to who Beech elected to change to Lycoming. There is no STC to change the engine available at the present time. The scuttlebut is that one existed years ago that allowed a change to an O320 Lycoming, but we have not been able to track down who owns the STC or it it ever really existed. A couple of airplanes have been converted to O360 Lycomings under one time STCs but the conversion was quite expensive. The IO346 can be rebuilt if you have a good Crankshaft and Crankcase. I had mine rebuilt by a local shop about 12 years ago. The shop is now out of business, but the owner has a new business. I think that he would do a field overhaul for an IO346 today, but he is on the wrong side of 65 and I am not sure how long he plans to remain active. My overhaul was mixed with some other work and the paper trail was not
    good enough

    for me to know exactly how much the overhaul was, but I think around $12,000 in 1995. I would expect more today.



    Many engines do not make TBO. TBO is predicated on the aircraft flying that many hours in 7 years. Most of the time they do not. Since TBO is a guideline and not a requirement for Part 91, we mostly run our engines 20 years or more between overhauls. I am happy if I get to fly my airplane 100 hours a year, but most years I do not. I have not flown it in over a year because of a difficult annual and some personal considerations which kept me away.



    Good luck with your purchase, or further search.



    Willis, N8886M



    ----- Original Message ----

    From: jsmith123456789jsmi th <jsmith123456789jsmi th@yahoo. com>

    To: musketeermail@ yahoogroups. com

    Sent: Friday, December 21, 2007 1:29:35 AM

    Subject: [musketeermail] musketeer engine stcs



    I've been looking at a 1965 Musketeer and really like the plane, but

    I've been reading about how problematic it is to overhaul the

    engine...does anyone know if there is an STC to put a more popular

    engine in the Musketeer (like a lycoming) or which shops I could

    contact to get an estimate on an overhaul of a continental io346? The

    plane I'm looking at is nice and way more fun to fly than any small

    cessna I've ever been in... but it will need an overhaul in 1-2 years

    and I don't know if it is worth buying something that could be a huge

    headache and exceedingly expensive to keep flying if there are not

    options to put other engines in the plane...Any advice or places to

    look?



    Also, I keep reading mixed reviews on the performance of the engine.

    Does anyone know why it is unreliable and was replaced in later

    models...did it just require more expensive maintenance or was it

    prone to failure? I can't find much on this engine except that it was

    quickly replaced (for reasons I'm unaware of) and that parts are

    currently nearly impossible to find for it. Any info would be much

    appreciated.



    Thank you



    Join BAC today and be a part of the ONLY Type Club for the Musketeer

    series!



    www.beechaeroclub. org



    Yahoo! Groups Links



    [Non-text portions of this message have been removed]














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    Join BAC today and be a part of the ONLY Type Club for the Musketeer series!

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  4. #4
    I have a 1965 continental mouse. It is only got 150 hours on the overhaul, but i fully intend to keep this bird flying for many years. It was fully restored and in very good shape. I am just starting to make plans for further down the road, and was wondering if anyone knows someone who has got the 1 time stc for the O360. I would like to talk to someone who has gone through it and get an idea of what to expect.

  5. #5
    I don;t know of anyone who has made the swap you envision, but that does not mean it hasen't happened. It will be an expensive venture, you will need a different engine mount, O-360 engine, prop, spinner, baffling, accessories, a different boost pump, and the fuel system to the left wing will have to be modified. Dont know about the gauges, but I suspect the fuel pressure gauge will need to be changed.

    If you fly 100 hrs per year, your IO-346 engine should be good for another decade plus. And IMHO you will be giving up some HP. I still think the IO-346 should put out about 190 hp. 2/3 of a 285hp IO-520.

    Rap McBurney
    N8786

  6. #6
    It was once tried by someone that already held an engine upgrade for another type of airplane. They had a Musketeer and wanted an 0-360 in it. He found a wrecked B-23 and essentially did a firewall forward exchange. The FAA was not helpful and after 2 years of effort and a lot of money, he wound up swapping out the data plates.

    I agree with Rap. Keep the IO-346! The only parts you can't get for the engine is the cases (which can be repaired and overhauled a few times), the crankshaft and the camshaft. The crank is robust and should last through several overhauls. The cam seldom goes bad as it is almost submerged in the oil sump. If it ever does go bad, you might be able to have it replicated in billet stock at a machine shop. I'd prefer the A23/A23A over most of the rest of the fleet because of the fuel injection. I always wondered what it would take to hang a constant speed prop on an IO-346.
    Marty Vanover
    Tucson, Az.

    Where "Sandy Beech" has landed.

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