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10-26-2015, 11:20 AM
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Join Date: Feb 2010
Location: Gardnerville Nv.
Posts: 2,828
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Engine parts list & ideas help please.....
So, I have lots of experience building auto, truck, marine, bike ect engines, but that's where it ends. I would like to build my power plant for my 7A, I don't know if I will save any money, or not, probably not, but still...I would like to build a 390 or 400, so here is the first question, do I need to have the case modified for this, or can I just bolt on the larger cylinders and or stroked crank, ( need for balancing? ) and where does one get said parts? I would like to do the cold air induction from Sky Dynamics and their cylinder girdle, roller cam and adjustable roller rockers, EFII, other items are the piston and cam spray nozzles, case relief groves near cam caps, case stud O rings....also, would it be a good idea to buy a good core, to have all the little extra parts like fill tube drive gears ect?.........I am also trying to research all the little problems like the oil pump drive shaft-gear issue ect......Thanks, Bret.
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7A Slider, EFII Angle 360, CS, SJ.
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10-26-2015, 12:23 PM
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VAF Moderator / Line Boy
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Join Date: Jan 2005
Location: Dayton, NV
Posts: 12,256
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Honestly Bret, while these Lyclone engines are awfully simple, there enough little gotcha's and tricks that I would seriously look at building with an experienced person (someone who does it all the time, not just whose done it once or twice, and has changed a jug....) by your side the first time - and maybe the second if you only do it once every ten years. It's not complictaed, it is just that there are little tricks that not only make it easier - they make it a better egine.
I wnet to Mattituc in New York and helped build my RV-8 engine - but that was 11 years ago and they're gone. I know somoene who went to Aerosport last year and helped as they built up his engine - so they might do it. You can do Superior's school and build your engine, but check to see if they have all the options you want.
When you add up all the special tools you might need to do the job right, and all fo the unique lubricants and sealers you'd want to have on hand, spending a little extra at a school is not that unreasonable. I'm going to the Lycoming school next February for a week (both the maintenance and assembly classes), and might be comfortable enough after that - and decades of working on them - to build my next one.
First Lyclone? Do it with experienced help - you're going to be flying behind it. With your family. Over the Sierra.
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Paul F. Dye
Editor at Large - KITPLANES Magazine
RV-8 - N188PD - "Valkyrie"
RV-6 (By Marriage) - N164MS - "Mikey"
RV-3B - N13PL - "Tsamsiyu"
A&P, EAA Tech Counselor/Flight Advisor
Dayton Valley Airpark (A34)
http://Ironflight.com
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10-26-2015, 12:41 PM
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Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 10,011
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Engine Shop
I was going to build my own, but I went to a big local engine shop to ask about the YT connecting rods I had - they looked like they may have been overground on the sides - they weren't.
I asked about assembling the parts I had into an engine, and it was done off work hours by the senior assembler and QC inspector for about $500.
Heck, I spent around half of that amount getting a subscription to the latest and current Lycoming documents.
If you don't get the certified paperwork - which you won't have for a DIY job anyway - paying an experienced builder may the easy way to go
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Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ
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10-26-2015, 02:06 PM
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Join Date: Feb 2010
Location: Gardnerville Nv.
Posts: 2,828
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So, what ARE some of these gotchas?
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7A Slider, EFII Angle 360, CS, SJ.
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10-26-2015, 02:08 PM
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Join Date: Feb 2006
Location: Valley Forge, Pa
Posts: 636
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Roll your own?
The real cost of this engine is getting all the parts specked out and on the bench ready to assemble.Having Lycoming or Major builder supply your new engine with run time and One to Two years of warranty.Don't forget the propeller,a fire breathing dragon like the one you specked out is limited to a couple high end(expensive)propellers that need expensive governors.You will be well into 60K+ territory.Now if you can convince Vans to sell you a RV-14 engine&propeller package,fly it for a wile then modify it till you have what you want.My guess is you wont need to.IMHO
RHill
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10-26-2015, 02:17 PM
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Join Date: Mar 2005
Location: Dallas area
Posts: 10,768
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Even a certified A&P cannot legally build up an engine unless he/she has previously built the same model under the supervision of an A&P who has done that particular model.
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Mel Asberry, DAR since the last century.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>
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10-26-2015, 03:05 PM
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Join Date: Jun 2005
Posts: 846
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Build
Bret dont rule out the 200hp angle valve engine with the install of high compression pistons and a little polish and porting you will in the same range of HP for a lot less money great engine.
Bob
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10-26-2015, 03:21 PM
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Join Date: Feb 2006
Location: Sydney, Australia
Posts: 251
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Bret, I think you would have to buy an engine like that from Aerosport Power or similar and do their owner assisted build. Putting these things together only takes the experts 6 hours or so and it goes so fast you wonder if you learn't anything.
If you want to build it yourself you need to look for a good core. You are not going to get roller cams, but I don't consider that a deal breaker. Aeros require a thick flange crankshaft without the lightning holes. If you want a constant speed prop you need a hollow crankshaft etc.
Another way to go is just buy a new crankshaft from ECI. The O-360 crank is ~$3600 from airpower or the O-370 crank (stroked) is ~$4900. That's what I did and I will have about half the cost of new in my engine. The local engine builder will help me assemble it next week.
Lots of builders want the best. The truth is that we only fly 100 hours a year. In some ways a new engine with 2,000hr TBO is a waste. I still think that the new engine from Vans is hard to beat. You can pay twice the price but you won't get twice the performance.
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Richard Talbot
RV-7A
Sydney, Australia
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10-26-2015, 03:36 PM
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Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 10,011
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Quote:
Originally Posted by bret
So, what ARE some of these gotchas?
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One gotcha...
Part number changes/updates that are incorporated in Lycoming SBs - most of which are not published on-line.
__________________
Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ
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10-26-2015, 03:38 PM
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Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 10,011
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Quote:
Originally Posted by Mel
Even a certified A&P cannot legally build up an engine unless he/she has previously built the same model under the supervision of an A&P who has done that particular model.
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Only if you want the paperwork to make it a certified engine...
__________________
Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ
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