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-   -   I0360 install (https://vansairforce.net/community/showthread.php?t=156991)

DaveO 01-17-2018 07:12 PM

I0360 install
 
Is anyone considering mounting a I0360 on your RV 14?

I was told that a 360 could be increased to 200-210 HP I do not know the truth.
I know about 200 hp 360's but what would a 10HP decrease do to the performance. Is it worth considering?
Any thoughts

mill2978 01-17-2018 07:30 PM

You can get 10:1 pistons for the IO-360. Is reported to add 12-15hp, it also shortens the TBO from 2000hrs to 1000hrs.

The RV-14 has an IO-360

N941WR 01-17-2018 07:48 PM

The issue isn't the HP but the LB's.

The parallel IO-360 is just too light. However, you can install an IO-360 angle valve in a -14.

Van's prototype -14 (taildragger) has this engine and is a bit faster than the IO-390 powered RV-14A.

mill2978 01-17-2018 08:33 PM

Quote:

Originally Posted by RV8JD (Post 1233038)
Hmmm ... Up until very recently, I had an RV-8 with a parallel valve IO-360 that had 10:1 pistons installed by LyCon when the engine was brand new. That engine has 1940 Tach hours on it now and is still going strong. Never had a cylinder off or any other major work done to it.

Although TBO doesn't mean much for Experimental airplanes, can you provide a reference for your statement that "... it also shortens the TBO from 2000hrs to 1000hrs."?

I'd have to refer you to Barrett Precision Engines. It was in some of the info I got from them when I was deciding on my engine. I opted for the 8.7:1, not for the difference in TBO, but for the desire to burn 91UL.

6 Gun 01-18-2018 05:27 AM

engine
 
Maybe you could find a Angle valve that needs overhauling buy new cylinder kits and have the case machined for larger cylinders and have a 390 engine.Cylinders for the 390 are cheaper than angle 360.
Bob

bret 01-18-2018 05:58 AM

A stock Io 360 A1A is 200 HP. 10 HP is not that significant unless you are going to Reno, at altitude I loose a lot more than 10 HP, but she is still happy :D

Jared_Solomon 01-18-2018 07:51 AM

I can't see why you would
 
Van's numbers on their site are slightly skewed because they publish the numbers for the IO-360 on the -14 as instead of the -14A. Having the nose gear eliminated helps improve performance a bit, almost making up for the 10hp difference, making the IO-360 looks faster. It's not, it's the missing nosegear. Apples to Apples on the equivalent air frame, you climb faster and will be able to go faster with the IO-390. However I don't think that really the reason to choose the IO-390.

My RV-14A runs fantastic on the IO-390. My CHTs run between 300 - 315 (IO-390 has excellent cooling). Mid 300's on extended VY climbs. I loiter around at 55% - 150kts TAS burning 7.5 gph. The price of the IO-390 and Angle Valve IO-360 are about the same. The angle valve will run hotter (possibly less longevity) and not climb as well for very little savings in money. You can't go wrong with the IO-390 on the -14/A

rvbuilder2002 01-18-2018 08:53 AM

Quote:

Originally Posted by Jared_Solomon (Post 1233102)
Van's numbers on their site are slightly skewed because they publish the numbers for the IO-360 on the -14 as instead of the -14A. Having the nose gear eliminated helps improve performance a bit, almost making up for the 10hp difference, making the IO-360 looks faster. It's not, it's the missing nosegear. Apples to Apples on the equivalent air frame, you climb faster and will be able to go faster with the IO-390. However I don't think that really the reason to choose the IO-390.

My RV-14A runs fantastic on the IO-390. My CHTs run between 300 - 315 (IO-390 has excellent cooling). Mid 300's on extended VY climbs. I loiter around at 55% - 150kts TAS burning 7.5 gph. The price of the IO-390 and Angle Valve IO-360 are about the same. The angle valve will run hotter (possibly less longevity) and not climb as well for very little savings in money. You can't go wrong with the IO-390 on the -14/A

The IO-360 installed in the tail dragger prototype cools equally as well as the IO-390 in the trigear RV-14.
Your good cooling performance is for the most part related to the cooling system design than it is to it being an IO-390.

I do agree that the performance difference between the two engines will mostly show up in take-off and climb...... but differences are not very large between the different engines.

rvbuilder2002 01-18-2018 08:57 AM

Quote:

Originally Posted by Davoakes@att.net (Post 1233025)
Is anyone considering mounting a I0360 on your RV 14?

I was told that a 360 could be increased to 200-210 HP I do not know the truth.
I know about 200 hp 360's but what would a 10HP decrease do to the performance. Is it worth considering?
Any thoughts

There are two different Lyc IO-360's so it depends on which you are talking about......

As Bill already mentioned, the parallel valve IO-360 which is normally rated at 180 HP is quite a bit lighter than the angle valve engine the airplane was designed around, so it wont work.

The angle valve IO-360 (200 HP) or the IO-390 (210 HP) are what you need for an RV-14(A).

N941WR 01-18-2018 09:21 AM

Scott,

I know you don't usually deal in "what-if's", but can you indulge me this one time?

How much longer would the engine mount for the -14 need to be to put the CG where it would work for the parallel valve (I)O-360 and what would you expect the performance hit to be?


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