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  #21  
Old 12-30-2014, 11:37 PM
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Neal@F14 Neal@F14 is offline
 
Join Date: Aug 2007
Location: Wichita Falls, TX
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The RV-8 I helped a friend build, and got to fly for a couple years before I got my own RV-6 has a 192hp ECI Titan IO-360 9.2:1 compression (parallel valve) with Hartzel BA prop. The lighter weight up front makes it a delight to fly. Takeoff acceleration and climb performance make it what I'd call a "muscle plane". Taking off from high density altitude airports on warm days in the mountains in Idaho, and Utah on our trips to Johnson Creek, loaded to full max gross, he had no problems at all while my 160hp fixed pitch RV-6 wallowed like a fat Cherokee 140.
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Last edited by Neal@F14 : 12-31-2014 at 08:31 AM.
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  #22  
Old 12-31-2014, 06:36 AM
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Kahuna Kahuna is offline
 
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Location: Gold Hill, NC25
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Quote:
Originally Posted by claycookiemonster View Post
Economics of fuel & purchase cost aside, what disadvantages come from these stroked IO-360's?
This is a great question. I do not know of any what so ever.
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  #23  
Old 12-31-2014, 08:17 AM
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carrollcw carrollcw is offline
 
Join Date: Jan 2012
Location: Friendswood, TX
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I just received my engine from Titan. Its an IOX370 parallel valve with standard compression cylinders pushing 197 HP. Basically the same HP as an IO360 without the added weight. Could have gotten over 200 HP if I went with high compression, but I didn't think it was worth losing the flexibility of using unleaded fuel. Give Kevin a call. Great group of people to work with.
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  #24  
Old 01-07-2015, 07:51 AM
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Relentless Relentless is offline
 
Join Date: Aug 2010
Location: San Luis Obispo
Posts: 199
Default Titan 370/375 best bang for the buck, hundreds flying!

ECi started selling the 370 (Aerosport continues to call it 375) many years ago and there are hundreds of these flying. This past year this was Titan's best selling engine next to the 340.

There are two reasons that I believe this specific engine works so well in our airframes:

1. The stroked engine doesn't just increase hp, it moved the peak torque down exactly where we want it. I can easily get over 200hp by spinning a high compression 360 way up, but what I want is peak torque around 2550 rpm exactly where the stroked 370 is.

2. Second is the weight. A angle valve 360 while it produces 200hp weighs well over 330 lbs. A comparable straight valve 370/375 comparably equipped usually goes out the door around 285lbs.

The last point I want to make about lowering the compression; rather than lowering the compression on a standard 180hp 360 and compromise hp why not start out with a 204hp 370 and lower to around 185-188hp and have the flexibility of a lower octane?

Just saying'
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Last edited by Relentless : 01-07-2015 at 07:52 AM. Reason: spelling
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  #25  
Old 01-07-2015, 01:22 PM
rapid_ascent rapid_ascent is offline
 
Join Date: Mar 2008
Location: Dublin, CA
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Buy the fuse kit and keep pondering.
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* Both Wings fully skinned
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  #26  
Old 01-07-2015, 01:58 PM
bkthomps bkthomps is offline
 
Join Date: Jan 2010
Location: Destin
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i vote for the IO-540
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