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Advice and Education needed on 6 cyl Lycoming

Posted: Wed May 10, 2017 11:58 am
by HASBEEN
Let me start this request with a disclaimer that I know very little about Aircraft engines.

I have a 6 cylinder Lycoming that has been sitting up in a friend`s shop for years. He has recently sold his last airplane and has no use for the engine. It was supposedly a fully functional engine when removed from the airplane. Yeah right.... :lol:

If, it was, or can be made serviceable with some work, what size boat, prop, seat/rigging set up would it support dependably?

Any advice is welcome.....even critical advice :violent1:

The Tag says it is GO435 C2

I will try to post a few pics if I can remember how.

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:cheers:

Re: Advice and Education needed on 6 cyl Lycoming

Posted: Wed May 10, 2017 12:29 pm
by 406 JAMIE
there r still some here in fla runing these motors.
I would say a 12x7 hull alumn 2seater with that gearbox on that motor would do real good on dry and on fuel and i would say a nice 2 bld 70-72 inch prop and then get the starter flywheel and alt kit from clay.and build riggin out of S/S.
Do a leak down test on it spray some PB BLASTER down each cyclinder before u start to roll it around to bring up compression to see what PSI u have.hopefully twister69 or greg or justin will see this and help they r real good with aircraft engines and mags.hope this helps besafe. :rebel: :rebel:

Re: Advice and Education needed on 6 cyl Lycoming

Posted: Wed May 10, 2017 4:03 pm
by twister69z
Going to defer to Justin Ficken

Re: Advice and Education needed on 6 cyl Lycoming

Posted: Wed May 10, 2017 7:58 pm
by terrible ted
With a gear? what hp? I rum a helicopter 540 originally 305 hp. I raised the compression. I love to revert it to a gear box I would also go down to a 13 x 8 or 7.6 ultralight hull. A gear box usally means a bigger prop-longer and lower rps. I call cecil in melbourn that's his style motor.
321 403 7429

Re: Advice and Education needed on 6 cyl Lycoming

Posted: Thu May 11, 2017 8:57 am
by Deano
I have been under the impression that the 435s were good, reliable engines, but where on the heavy side for the power produced. That in and of itself is what it is, but the more relevant factor may well be the expense of acquiring some parts when and if they are needed. I can say from first hand experience that the folks that have rings to fit those cylinders are quite proud of them. I have a 290 that was redone with 435 cylinders, and one set of rings for the rebuilt cylinder it needed cost damn near what the rebuilt cylinder did.

If that is representative of how parts go for that engine, then there is little wonder to me why it was the last one unused by a guy that had other alternatives at hand.

If it were me, I would do compression and leak down tests on it before I committed to much toward that cause. It may be prudent to at least determine what it may need and price/source the parts before jumping in with both proverbial feet.

Re: Advice and Education needed on 6 cyl Lycoming

Posted: Mon May 15, 2017 11:12 pm
by HASBEEN
I appreciate the input, being a "Carmotor" guy ( my training wheels boat was an old Panther with 455 Buick DD....wish I had it back :banghead: and My current is a BBC 15x7 no frills "good boat"........but the few
AC powered boats that I have run with on the Brazos.....Really Impressed Me.

Deano, I have read posts about the "leak down" test and will search/research SA and proceed with that effort.

My 15x7 Cyclone had an Aircraft engine when it left the plant as new.....it was left out in the weather with no covers/ air cleaner and rained in for years...trashed the engine.

I promptly gave it to an AC buddy, and put what I`m comfortable with on it.....yeah shame on me ...carmotor :stirpot:

The Brazos is hard on big boats :scratch: I`m thinking that an ample powered, smaller boat,( like you suggested 406jamie) may be fun and easier to maintain. :dontknow:

Again, thank you Fellars for the input.

Hasbeen

Re: Advice and Education needed on 6 cyl Lycoming

Posted: Tue May 16, 2017 2:39 pm
by BANANA BOAT
it's a glorified vw engine

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Re: Advice and Education needed on 6 cyl Lycoming

Posted: Fri May 19, 2017 12:25 am
by HASBEEN
I found an interesting container full of part included with this engine :cheers:

A "Hartzell Hyro Select" hub assembly and 2 blade aluminum prop.

Pretty cool technology.

I will try to evaluate what I have in more detail as time allows.

Hasbeen