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180 HP

2006-02-02 09:14:48

180 HP

Just about to put a 0-360 in a 172D, whats the ACTUAL performance can be expected?

I've read all sorts of things like 130 knot cruise at 2300 revs and 35 litres an hour but I can't see how. I would expect maybe 110 knot cruise at 2450 at about 38 to 40 litres an hour? anybody done this and what do actually get out of yours? The conversion we have is a DelAir one.

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2006-02-02 22:40:42

Re: 180 HP

Student pilot

I had a 1980 172N (160 hp) for many years, and considered the 180 HP conversion.
I was not convinced that the performance increase I was hearing/reading about was accurate.
I decided to go to the Cessna site, and compare the specs for the new 172's 160hp vs 180hp.
I felt this would give me the most valid comparison.

I ended up selling the 172 for a 182 before the engine needed replacement.
However, after visiting the Cessna site, and comparing the expense of the 180hp upgrade vs a factory overhaul of my O-320, I felt like I had good info to make my decision.

Steve

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2006-03-10 05:49:39

Re: 180 HP

The 180 hp (fixed pitch)upgrade basically turns the 172x into a 172Q. What engine is coming out, what engine / prop is going in. I'll look up some basic numbers for you. Don

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2006-03-12 10:22:07

Re: 180 HP

The engine coming out is an 0-300, the Aircraft is a D model and is pretty light at 616 kilo's or 1355lb.

The engine going in is a 180hp 0-360, a new fixed pitch Sensinich prop. They say there is not much weight gain with this installation.

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2006-03-13 00:32:20

Re: 180 HP

Student pilot
The new cessna 172 SP is equipped with a Lycoming IO-360 180 hp.
2006 172 body style is comparable to your year model.
These are the specs.
http://skyhawksp.cessna.com/spec_perf.chtml
I would think that at best, (remember these are new planes) this would be the most performance you can expect.
There will be a little variance due to weight, rpm limits and perhaps a different prop, but it will be small.
Anyone telling you different is either trying to sell you a 180hp conversion or rewriting the laws of physics.

Most people I know that have had the conversion are happy with it.
I owned a 172 and considered the option had I kept the plane.