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12-28-2016, 06:13 PM
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Join Date: Nov 2016
Location: Reno, NV
Posts: 8
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7A IO-360 180hp vs 200hp vs O-320
Planning my 7A and engine shopping.
Mission: RNO area light acro, SW US XC & RNO-LAX (HHR) 4/yr for work.
Shying away from CS to reduce MX, but would like to improve resale by matching build with market demand. Thanks.
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Steve Flanagan
WTB RV-6A/7A
'16 dues paid
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12-28-2016, 06:55 PM
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Join Date: Dec 2007
Location: Dogwood Airpark (VA42)
Posts: 2,596
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I've gone around the tree a few times on engines, including getting quotes from the various vendors.
For me the choice for best value, best cross country set up, best balance is the 180hp IO-360 with the Hartzell CS prop - via Van's show special and the $1000 off if you get the prop and engine together.
The CS versus FP debate will, I'm sure, rage on. For me my first RV-8A started life with a FP prop. The plane was fine, but not stellar. I backfitted the Hartzell BA CS prop, took off with a dream set up and my only regret was all the hours flying with the FP prop knowing now what I was missing.
Carl
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12-28-2016, 07:04 PM
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Join Date: Jan 2005
Location: Granbury Texas
Posts: 1,136
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Well, your about to get lots of opinions and this one is no different, no right or wrong just opinion. First I don't really see the maintenance cost issue with the CS so I would reconsider that option, there is little difference at cruise but takeoff and climb is improved.
I have built RV's with 200 hp and 180 hp engines as well as carbureted and fuel injected. The 0360 A1A would be my first choice but the IO360 is a close second, both would be 180 hp engines. I would stay away from the 0320 option but the RV still performs well with that engine.
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Built, RV 8, RV8A, RV 10, RV12, Purchased RV7A
Restored J3Cub and PA28R180
Pecan Plantation
Eagles Nest Mentor
EAA Tech Counselor
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12-28-2016, 07:17 PM
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Join Date: Jan 2014
Location: Hobbs, NM
Posts: 239
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I have no opinion on this but definitely go 200HP. Kidding!
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Ben
RV-7A Tip Up Airworthy on 12/20/2016
RV-10 Emp 95% complete - sold
RV-14A Empennage Done waiting on front fuse kit to show up.
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12-29-2016, 08:47 AM
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Moderator, Asst. Line Boy
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Join Date: Jan 2010
Location: Flower Mound, TX
Posts: 1,473
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Steve,
Pat's and Carl's advice is spot on. Like you, when I built, I wanted a balance between reasonable performance, value, and follow-on marketability (for the airplane or individual components). I couldn't yet afford a CS prop, so I opted for the IO-360 with a good FP pitch. I took advantage of the 2012 Van's Sun 'n Fun engine/prop combo sale, and purchased the YIO-360-M1B with the Sensinich 72FM8S9-1(85) experimental prop. Great prop for cruise speeds, and reasonably OK for all the other stuff (takeoff, climb, aero, etc.)
About the Van's Sun 'n Fun deal: FANTASTIC! The engine ships to you bagged/pickled for long-term storage, for they recognize that you're probably not ready to install the engine so it'll need to sit a while. The prop/engine combo saves 1-2 AMUs (aviation monetary units), and that year the shipping was free. I saved another several thousand dollars by buying the non-certificated engine: It's factory new right off the Lycoming line, and even has the same warranty. It just doesn't come with a $6-7000 piece of paper saying "certified".
Now, 250 flight hours into this, I'm ready to expand the airplane's performance curve, so I'm buying the used Hartzell C2YK-1BF CS prop off Dan King's RV-8 BEAUTIFUL DOLL. This prop is the classic Van's-preferred matchup with the RV-7A / IO-360 family.
Bottom Line: Either way, you'll build a fantastic machine. I do recommend sticking with the (I)O-360 family just because to me it's what the airplane was designed for, most buyers expect, and easy and enjoyable to fly. Plenty of buyers will want a FP prop for the simplicity/cost factor, so you won't have trouble selling it IMO. Same applies for a CS prop: Much of the market will prefer it over the FP. Either way, you'll find buyers.
BTW: In about 2 weeks I'll list my FP Sensi prop here on VAF, along with the spinner and front/back plates (already fitted to each other), and the spacer and bolts. All you'll need is a 360. 
__________________
Scroll
Sid "Scroll" Mayeux, Col, USAF (ret)
52F NW Regional/Aero Valley Airport, Roanoke TX (home of DR's Van Cave)
"KELLI GIRL" N260KM RV-7A tipper
Catch her on YouTube's "Because I Fly!" channel
Exemption waived.
Proud and grateful 2020 -=VAF=- Contributor
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01-11-2017, 08:31 AM
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Join Date: Nov 2016
Location: Reno, NV
Posts: 8
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Thanks all for the feedback, iyou're why this website is so valuable! Scratched the O-320 and now looking at IO-360 vs O-360. Given my desire for acro is there any benefit to an O-360?
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Steve Flanagan
WTB RV-6A/7A
'16 dues paid
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01-11-2017, 08:41 AM
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Join Date: Feb 2010
Location: Gardnerville Nv.
Posts: 2,828
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I looked for years while building, then there it was, a freshish (240 SMOH) rebuilt, IO 360 A1A with fresh rebuild CS Hartzel out of a Mooney, 16K for both! but added Dual EFII
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7A Slider, EFII Angle 360, CS, SJ.
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03-10-2019, 06:17 PM
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Join Date: Jan 2019
Location: Lake Wales
Posts: 4
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Alright, I'm using the search function to look for wisdom and found this post... What about when buying used? I want a fast cruiser and some mild aerobatics, worth it to pay the extra for an 0-360? IO? Or is a 320 acceptable, particularly when paired with a CS?
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03-10-2019, 06:32 PM
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Senior Curmudgeon
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 15,420
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Welcome to VAF
Eric, welcome aboard the good ship VAF 
__________________
Mike Starkey
VAF 909
Rv-10, N210LM.
Flying as of 12/4/2010
Phase 1 done, 2/4/2011 
Sold after 240+ wonderful hours of flight.
"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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03-10-2019, 06:35 PM
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Join Date: Jan 2019
Location: Lake Wales
Posts: 4
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Quote:
Originally Posted by Mike S
Eric, welcome aboard the good ship VAF 
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Thanks Mike! I've been shopping around for about 6 months, ready to pull the trigger. Sold my Cub, sold my 172, it's time.
Considering taking a pile of cash to Sun N Fun, buying a 6 I know of for sale that needs an engine (I have a buddy who can get me a deal on a 340), or picking up this: https://barnstormers.com/classified_...%27s+RV-6.html
Thoughts?
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