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  #1  
Old 02-27-2023, 08:02 PM
romaja romaja is offline
 
Join Date: Jan 2016
Location: Portland Oregon Area
Posts: 131
Default Oil Cooler Shutter needed? IO-390 EXP119

Currently planning the panel and cables that penetrate the firewall. For those that are currently flying the RV-14A or the -14, have you installed an oil cooler shutter to help with cooler temperatures at the higher altitudes or the colder winter months? I noticed Vans sells one and also Anti-Splat. I wanted to get opinions if it is needed. Much easier to install now.

As mentioned above, I will be using the IO-390 EXP119 with the newer lower cowl design and the cowl exit door.

Best,

Jim
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  #2  
Old 02-27-2023, 08:50 PM
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dmattmul dmattmul is offline
 
Join Date: Dec 2015
Location: Spring Hill, FL
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Default TCW BUTTERFLY VALVE

I don't have the newest IO-390 but I find in Ohio winters a flapper valve helps get the oil temp in the 190 range in wintertime operation. Make sure it's reliable. An oil flapper stuck closed even for a few minutes will result in temps climbing way above the safe zone. You are correct, much easier to install in the build stage.
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  #3  
Old 02-27-2023, 09:56 PM
scsmith scsmith is offline
 
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Location: Ashland, OR
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Default

Generally the angle-valve engines transfer a lot of heat to the oil ( piston oil squirters) and so the cylinders tend to run cool and the oil tends to run hot. I have a butterfly valve in the duct to my oil cooler and I very rarely use it.


I do use it once in a while, but all things considered, you probably don't want the sliding shutter type control because even with it wide open, it still obstructs a fair fraction of the oil cooler, and it is likely that you will struggle with high oil temps more often than low oil temps.
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  #4  
Old 02-27-2023, 10:42 PM
Bavafa Bavafa is online now
 
Join Date: Oct 2007
Location: Sacramento, CA
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Default

The EXP119 will require all the cooling for the oil as it can get, especially in summer time. With the cowl flap closed, the exit air is very little and the oil temp will get up there easily.

Those oil cooler shutter that VANs and anti-splat sell are for the different model RV, I had one on my RV7A but will not work for the 14A.

TCW has a shutter that will fit a standard 14 and I had installed one in my last 14A which I hardly ever used it for the same reason.

https://www.tcwtech.com/product/butt...oolers-4-inch/
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  #5  
Old 02-28-2023, 06:04 AM
JET14 JET14 is offline
 
Join Date: Aug 2019
Location: Ridgeway, SC
Posts: 52
Default cooler

I got a message from Greg Hughes telling me pretty much the same thing about cooling on the 119 engine. It needs all it can get. I have the shutter from Anti-splat and it won't fit the 119 oil cooler anyway. All things considered I decided against installing one.
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  #6  
Old 02-28-2023, 06:44 AM
TS Flightlines TS Flightlines is offline
 
Join Date: Apr 2010
Location: Ridgeland, SC
Posts: 3,205
Default

.02 worth here: Great RV10 client of ours with the TCW liner actuators on the heater boxes and the oil cooler flapper door. One of the heater door actuators failed with the heater door in the open position, presumably in flight. Hot, might an understatement.
Well what if the same happened on an oil cooler door? Engine temps on climbout might get out of hand in a big hurry. Stupid me suggested he put in a manual override cable to open the door in case of this failure. Kinda hard to see from the pilots seat in flight, so the only way to know for sure would be to get on the ground and pull the cowl.
With all you pilots have to do, all that aviate, navigate, communicate things with all those switches and stuff, It might be 1 less thing to worry about. Just another redundant backup system.

Tom
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  #7  
Old 02-28-2023, 07:09 AM
Northernliving Northernliving is offline
 
Join Date: May 2005
Location: Boston, MA
Posts: 712
Default

Quote:
Originally Posted by romaja View Post
Currently planning the panel and cables that penetrate the firewall. For those that are currently flying the RV-14A or the -14, have you installed an oil cooler shutter to help with cooler temperatures at the higher altitudes or the colder winter months? I noticed Vans sells one and also Anti-Splat. I wanted to get opinions if it is needed. Much easier to install now.

As mentioned above, I will be using the IO-390 EXP119 with the newer lower cowl design and the cowl exit door.

Best,

Jim
Install a shutter or butterfly damper and use a cable. I've had a few liner actuators fail. I use mine year-round to keep oil temps in the 180-200F range.
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  #8  
Old 02-28-2023, 07:31 AM
romaja romaja is offline
 
Join Date: Jan 2016
Location: Portland Oregon Area
Posts: 131
Default

Thanks for all the replies. After reading the responses. It does not appear that the shutter valve that Anti Splat and Vans sells will fit. In addition it might block air flow when fully open as some have mentioned, the angle valve needs all the cooling it can get.

The TCW shutter valve using a cable to actuate might have been a consideration but I dont see a 5" flapper on their website just a 4". Dont have the plans in front of me but the -119 now uses a 5" hose to the oil cooler instead of the 4". Will confirm.


Jim
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  #9  
Old 02-28-2023, 09:04 AM
BoydBirchler BoydBirchler is offline
 
Join Date: Jul 2020
Location: Indianapolis
Posts: 228
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I have a AntiSplat shutter on my RV7's, IO-360's, oil cooler. With it fully open, the oil seems to run 140F year around. I modulate the temperature, with the shutter, to obtain 180 to190F.
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  #10  
Old 02-28-2023, 09:14 AM
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mc607 mc607 is offline
 
Join Date: Apr 2014
Location: YQT, Canada
Posts: 158
Default

Quote:
Originally Posted by Bavafa View Post

TCW has a shutter that will fit a standard 14 and I had installed one in my last 14A which I hardly ever used it for the same reason.
The butterfly valve from TCW is 4 and the oem duct is 5. How did you adapt it to fit and did the reduced diameter cause any issues when wide open?
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