Arbiter Posted May 5, 2009 Share Posted May 5, 2009 Hey Folks, It's been a while since I've posted.... Been working on a project of my own. Coming down to some initial sizing decisions around the engine. The issue I have is I need ~180-220 hp to meet my cruise constraint on the design. The aircraft will cruise @ 12,000 ft, and 150-160 Kts. As we all know, a normally aspirated engine's Horsepower dies down with altitude. I have given some thought to turbocharging, which would get me the required horsepower at altitude I need to maintain the cruise speed I want with my given power loading. The issue I am running into is Lycoming's Thunderbold TIO-360 starts at $60K.... The IO-360 @ ~$34K..... Is there any way to SAFELY convert the IO-360 to (T)IO-360 for cheaper than the $26K they want for the upgrade? I called them and was told the turbo itself was $15K, which I find hard to believe (Maybe I am wrong, but car turbos are like $3K for a big one). In addition, they also said the pistons are a bit different and they added oil squirters, presumably to allow the generation of that horsepower at altitude... I am looking for your thoughts on this, and if anyone has heard of a conversion like this and about how much to expect to pay... For $60K I'd rather go with a bigger engine normally aspirated.... Anywho, thanks for the input up front. -Chris Z Quote Chris Zupp ~Aircraft Designer~ Preliminary Design Sequence I: Project Endeavour Aeronautical/Mechanical Engineer Private Pilot Link to comment Share on other sites More sharing options...
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