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  #1  
Old 01-17-2013, 01:07 PM
Airzen Airzen is offline
 
Join Date: Apr 2011
Location: Kirkland, WA
Posts: 163
Default Performance Comparison IO-360 vs IO-375

I am wondering if folks flying with IO-375 would share the performance numbers?

Specifically, I am interested in Fuel burn and TAS at WOT, and vertical performance.

I have looked for archives but couldnt find these numbers (and how they compare with IO-360)

Many thanks in advance,
Ashish
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  #2  
Old 01-13-2020, 05:35 AM
KayS KayS is online now
 
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Location: lake constance - german shore
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would be also very interested...

anybody with some experience meanwhile?
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  #3  
Old 01-13-2020, 11:59 AM
flyinga flyinga is offline
 
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Too many variables. Unless you find someone who changed engines, and engines only, and has accurate data, you'll get no meaningful info.
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  #4  
Old 01-13-2020, 12:06 PM
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Walt Walt is offline
 
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I changed from a standard 180hp 360 to a high compression 370 rated at about 200hp, the performance difference is quite noticeable, sorry no numbers.
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  #5  
Old 01-16-2020, 03:44 PM
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RV7A Flyer RV7A Flyer is offline
 
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Location: US
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All other things being equal, isn't this just an instance of the max speed increasing as a function of the cube root of the increase in HP?

Vf/Vi = (200/180)^(1/3)

or Vf = 1.035*Vi

???
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  #6  
Old 01-16-2020, 03:57 PM
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Dan Langhout Dan Langhout is offline
 
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Location: Huntsville, AL USA
Posts: 510
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I have an Aerosport IO-375 low compression version (8.0:1) purchased in 2010 in my RV-7. Performance #'s are very close to Vans published numbers for 180 HP IO-360. It has been disappointing from a performance perspective although in 530 hours it has not given me any real problems.
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  #7  
Old 01-17-2020, 03:03 PM
BlndRvtr BlndRvtr is offline
 
Join Date: Mar 2009
Location: NE Where
Posts: 269
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Minor thread drift: will an IO-375 fit where an IO-360 straight valve fits? Same engine mount?

George
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  #8  
Old 01-17-2020, 03:45 PM
Ralph Inkster Ralph Inkster is online now
 
Join Date: Feb 2008
Location: Calgary, Alberta
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same externally
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  #9  
Old 01-17-2020, 04:31 PM
z987k z987k is offline
 
Join Date: Mar 2017
Location: Alaska
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Quote:
Originally Posted by Dan Langhout View Post
I have an Aerosport IO-375 low compression version (8.0:1) purchased in 2010 in my RV-7. Performance #'s are very close to Vans published numbers for 180 HP IO-360. It has been disappointing from a performance perspective although in 530 hours it has not given me any real problems.
You should expect close to stock 360 numbers. You increased the displacement but you lowered the compression ratio. I assume for mogas...
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