172 180HP upgrad

172 180HP upgrad

Last week I finished upgrading my 172N to the Pen-Yan 180hp engine.  I also added the Powerflow exhaust system.  After 5 hours of test flight, I must say that I am very satisfied.  Climb rate at 75 knots is 1200 fpm.  Climb at 100 knots is 800 fpm.  Flat out full throttle cruise 2650rpm is 132 knots, 2500 rpm 125 knots.  All around performance is better than I had hoped for.  I highly recommend the upgrade if you are thinking about it.

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Re: 172 180HP upgrad

Did you go with the new factory engine or the Penn Yang rebuild?
I heard that the speed increase was not that great. They do offer a cruise prop. What was the bill!

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Re: 172 180HP upgrad

Perry,
I got the rebuild with new cylinders.  The speed and climb are great.  Just landed a few minutes ago.  At 2300 lbs. I was still climbing 800 fpm @ 9000'.  No complaints.  Total cost for Powerflow exhaust, Engine, prop, labor, and various other things from the firewall forward totaled $35K, That included an annual. new alternator, oil cooler rebuild.  Changing from the N model took more fabrication than I thought it would.  Had to refabricate battery box and move it, moved oil cooler and had to purchase a new oil cooler duct that looked like a dryer vent from Cessna for $300.00.  Also had to refab the engine baffling and move oil door and fabricate a patch.  The plane was down for 3 weeks.  On the first flight the increased performance was noticible.  The Powerflow exhaust decreased the noise and vibration in the cockpit greatly.  In cruise flight a normal conversation can be had without headsets.  It's funny because the loudest noise is the prop not the engine. Lucky for me the guys at my FBO were excited to perform the upgrade.  They did a great job.  They took their time and it looks great.

PS the prop that was sent has much greater pitch than my old prop.

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Re: 172 180HP upgrad

<HTML>RIch,
Thanks for the quick reply. Your info is greatly helpful. My 172N has 2175 hrs so I have to make a decision pretty soon. I really enjoy my plane. It is clean and in great condition. I just don't like being upside down on things. You definately have to fly the money out of it when you do the upgrade. I've looked into the 182rg and 210 but then you get into insurance and annual issues. Having a hard time making up my mind. I want to go fast but I don't want to spend the money!</HTML>

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Re: 172 180HP upgrad

Perry, I have decided to keep my plane for the next 5 to 10 years.  The engine that I removed had 1350 hrs on it.  It ran great and I felt a little guilty removing it.  I loved the way my plane flies and did not want to get rid of it.  But, I did want more lifting power.  Changing over to the 180 up my gross from 2300 to 2550.  I went out and flew it again tonight until about 1/2 hour after sunset.  No wind, cool night 50 degrees F.  It was smooth as silk up there and I had a smile on my face the whole time.  If you are thinking about doing the conversion you can email me directly and I can give you all the info about doing it.  From the time I bought my plane it had been my intention of doing the upgrade.  I had heard all kinds of bad things about the H engine, but, mine ran great.  I had a want not a need to change the engine.  I use it for pleasure and business.  Most of my trips are 150 to 300 miles and it fits the bill nicely.  The time since I have purchased the plane I have done the upgrade, gutted and replaced the entire interior (Plastic, door panels, carpet, seats), replaced the radios, audio panel, and added an S-Tec 30 autopilot.  Did not need to change the paint, it is in great shape.

Rich

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Re: 172 180HP upgrad

Perry:

If you are looking for more power and speed try the R172k.  Comes standard with 195 horse IO-360 (no carb ice) and constant speed prop.  Also has an STC out there for upgrade to 210 hp.  The simpilicity of a 172 with alot of power.

Sal

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Re: 172 180HP upgrad

Rich,
Re. the cruise speeds you mentioned, what altitude was this at...I am assuming you quoted TAS---or IAS?
Bob

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Re: 172 180HP upgrad

Bob, the Airspeed was 132kts IAS at 3000 msl calculated to a true of 139 TAS.  Tonight I climed to 8500 msl, IAS of 120, TAS of 139.  Just finished Pitot Static check during engine upgrade and annual so I am sure it is accurate.  Also, tonight my friend with a Mooney Ovation flew beside me and recorded the same airspeeds at the same time. 

Rich

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Re: 172 180HP upgrad

I did the same tom my 68 172I and love it.  As a matter of fact she is in Brady Texas getting a new paint job as we speek.  The only thing you have to watch is your fuel consumption.  My plane had 38 gallon tanks so I put in the FlintAero wing tip tanks to add another 23 gallons of useable fuel.  If you fly it hard and don't lean, you can burn 16+ gallons per hour.  I too would love to put an s-tech 30 in her but the insurance company won't cover what her replacement cost is now without an additional $10k worth of S-Tec.

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Re: 172 180HP upgrad

I currently have a 1980 172 with 1900tt, original H engine.
I too have researched the 180 conversion, and am weighing the pros & cons of the extra expense vs FREM on mine when time comes.
If I go the FREM route, then I may go the better avionics route & s-tec. I haven't had any engine problems that the H engine was known for.
Eventhough I have owned the plane for about ten years, and plan to keep it , I think I would be too much upside down with both upgrades.
Keep us posted with how you like the 180 conversion, the info helps.

Anyone going to Southwest Regional Fly-in May 14-16. http://www.swrfi.org/fly_in.htm
Steve

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Re: 172 180HP upgrad

I too have done this to my 1977 n model. It is really great. Be sure to weigh the pros and cons. I did not want to deal with 6 cylinders or a var pitch prop either. For those who can't justify it, remember you will get it back when you sell it. I get the same cruise numbers as the others.

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Re: 172 180HP upgrad

I have a 1967 H with the O-300.  How much more does it cost to do the upgrade with this configuration over the Lycoming?

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Re: 172 180HP upgrad

Don,

How can you be sure you will get it back when you sell it?  Sounds great but there are no guarantees.

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Re: 172 180HP upgrad

Marc,

I think they only perform the upgrade on 1968 Model I and newer.  Use this link to get to Penn Yan's website.  You can also give them a call and find out what they have to offer.

Rich

http://www.pennyanaero.com

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Re: 172 180HP upgrad

When I called Penn Yan a couple of years ago about an O-360 conversion for my O-300 powered 172D, they suggested I call Air Plains. Their deluxe conversion with new O-360 and new Sensenich prop, installed, is about $35,000.

<http://www.airplains.com>

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Re: 172 180HP upgrad

Hi Curt,
The insurance company may not reimburse you for the cost of the auto pilot, but having the autopilot is good insurance.
Glenn

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Re: 172 180HP upgrad

the wings arent big enuf ,they dont get out much better than the 150hp.buy a 180 or 185.plus u wont have trainin wheels

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Re: 172 180HP upgrad

Hmmm... sounds like a cut down on 172 owners.  Too bad.. this was a good thread with good info... Not everyone wants a tail tragger.

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Re: 172 180HP upgrad

With no wind, I can be airborne in LESS than 200 feet and my plane has never been ground looped and never will.

Better than 90% of the incodents/accidents on KVCB (my home airport) have been tail draggers. I don't go badmouthing Tail dragger, no I just do what I can to help them flip their plane back over if needed and help them pull it back into their hanger so that the can get it repaired.   If we all liked the same thing, this world would be boaring.  Lets not put each other down, lets help each other. 

Curt Fargo
N800FC 172I "Trigear"

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Re: 172 180HP upgrad

Bravo Curt!!!

Rich

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Re: 172 180HP upgrad

I also went with the 180 hp upgrade in my 172n.  I got with the Air Plains factory new conversion.  Rich you seem to be right on with the cost. I replaced every single part from the firewall foward for abut $38000 including annual.  The climb is great and adds a lot of confidence on short, heavy takeoffs.

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Re: 172 180HP upgrad

$38k is a little rich for my blood.  But I'm about 200 hours from overhaul of my 172M.  Only thing is, I'm also buying a house and building a hangar next year so It looks like a triple whammey if I throw an overhaul into all of that.  Anybody know anything about the 160hp conversions?  I'm wondering about the option of going with a 160 +Powerflo to get me the better climb power I'm looking for but keep the gross weight low, my 40-degree flaps, and better fuel economy.  Suggestions?

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Re: 172 180HP upgrad

Steve,

You can do the Pen-Yan for about $24K and 3K to 4K labor.  If I had to choose between the 180HP or the Powerflow, I would choose the engine then add the exhaust at another time.  The extra HP is worth it.  Mine cost about 35 to 36K.  But, that is because I went the extra mile and reworked other things on the firewall and more (annual,etc).  I performed a short field takeoff with 2 of us in the plane and was airborne and climbing in 250'.  By myself it is closer to a 200' takeoff roll.

Rich

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Re: 172 180HP upgrad

Steve

I too agree with Steve that it is much better to do the 180hp conversion now and when more funds become available, put the powerflow on.  I did the PennYann 2 1/2 years ago and it only cost $19,750, just $6,000 more than an overhaul and I got a NEW prop.  I did 95% of the work myself (under the supervision of an A&P  mechanic) and bartered for the rest.

The Powerflow is nice but not near as nice as the 180HP conversion.  You only have to limit the flap travel to 30deg when your accept the gross weight increase.

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Re: 172 180HP upgrad

I have a C172C and would like to get 180hp into it. Penn Yan can't do it. I can't find Airplains # in the phone book and their toll free # doesn't work from Canada. Does anyone have their # or e-mail?
Penn Yan told me to contact Del Air. I can't find them on the web. Does anyone know how I can get 180 hp into my bird?

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