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  #31  
Old 12-12-2009, 01:41 PM
IowaRV9Dreamer's Avatar
IowaRV9Dreamer IowaRV9Dreamer is offline
 
Join Date: Jan 2005
Location: Marion IA
Posts: 1,095
Default Looking for extra oil filler cap

I'm looking to build one of these... does anyone have an extra Lycoming bayonet style (not screw in) oil filler cap that they would like to part with? I don't need the dipstick, just the filler cap, hopefully with O-ring.

This is for an O-235, but I think it might be the same part for the O-320

PM me if you have one!
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Dave Gribble VAF #232
Building RV-9A N149DG (slider, IO-320, IFR)
Restored and Flying Beech Super III N3698Q
Marion IA

Struggling with fiberglass

There is no sport equal to that which aviators enjoy while being carried through the air on great white wings." Wilbur Wright, 1905
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  #32  
Old 12-12-2009, 02:52 PM
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frankh frankh is offline
 
Join Date: Jul 2006
Location: Corvallis Oregon
Posts: 3,547
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Update...went for my post annual check out flight...plugged in the dryer and saw a visible plume of steam from the filler cap...of course it was minus 5degC...very satisfying knowing that was coming out of the crankcase
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  #33  
Old 03-01-2010, 06:09 PM
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IowaRV9Dreamer IowaRV9Dreamer is offline
 
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Location: Marion IA
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Default worked for me

I built one of these this winter for the Skipper - I get the satisfying plume of moisture everytime I turn it on. The first 1/2 inch or so of the HF pellets have turned pink. I'm glad that moisture isn't in my engine any more!
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Dave Gribble VAF #232
Building RV-9A N149DG (slider, IO-320, IFR)
Restored and Flying Beech Super III N3698Q
Marion IA

Struggling with fiberglass

There is no sport equal to that which aviators enjoy while being carried through the air on great white wings." Wilbur Wright, 1905
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  #34  
Old 05-21-2010, 08:21 PM
PaigeHoffart PaigeHoffart is offline
 
Join Date: Jun 2005
Posts: 375
Default Oil filler Cap alternative

For those wanting to create a closed system, I recently discovered that an AN14 o-ring boss plug fits perfectly on the O-360. Drill and tap for a brass nipple available at hobby stores (I used one made by Dubro), and you're set for less than $10.

Paige
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  #35  
Old 11-07-2013, 09:53 PM
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Txflyer Txflyer is offline
 
Join Date: May 2013
Location: Wild Blue Yonder
Posts: 19
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Holy thread resurrection Batman!

I'm sitting here looking at a military sealed ammo box getting ideas it looks like a dehydrator.
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  #36  
Old 11-08-2013, 06:19 AM
bobnoffs bobnoffs is offline
 
Join Date: Jul 2012
Location: n. wi
Posts: 777
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to put a little different twist on this.........i have a 25 watt stick on heater on my oilpan and one on my crankcase. my oil temp stays 50 degrees above oat and the heads stay 12-15 deg. above. i take out my oil filler cap and i am thinking my oil will quickly evaporate any moisture as it is so much warmer than surrounding air and any steel on the engine is less likely to rust because i am above dewpoint by 10 degrees. 50 watts isn't a big deal to run 24/7
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Bob Noffs
n. wi.
dakota hawk/jab 3300 built and flying. sold 6/18.getting serious about the 12. in the hangar now as of 10/15/19
RV-12 kit as of 9/13
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  #37  
Old 11-08-2013, 08:56 AM
Bavafa Bavafa is offline
 
Join Date: Oct 2007
Location: Sacramento, CA
Posts: 3,351
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Quote:
Originally Posted by IowaRV9Dreamer View Post
I built one of these this winter for the Skipper - I get the satisfying plume of moisture everytime I turn it on. The first 1/2 inch or so of the HF pellets have turned pink. I'm glad that moisture isn't in my engine any more!
I built and used one last winter and did not get any or at least much moisture out. I am in the West and it is a much dryer climate though.

I will be using it again as the moister weather is arriving.
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N825SM RV7A - IO360M1B - SOLD
N825MS RV14A - IO390 - Flying
Dues paid
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  #38  
Old 11-09-2013, 02:11 PM
bobnoffs bobnoffs is offline
 
Join Date: Jul 2012
Location: n. wi
Posts: 777
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ok, i have read all the posts on this and unless i am missing something i can't see how this can be reducing moisture in the air it pumps by more than a miniscule amount. the pump is pulling air from the hangar and into the engine? if the pump was pumping a closed circuit from engine back to engine maybe but this pump is probably taking at least a couple cubic foot of air a minute. i don't in a million years believe that a quart of silica can be pulling the moisture out of a volume of air like that for very long. i imagine the calculations could be done to figure the water in a cubic foot of air at stp and a given humidity and i am not going there but i bet the air humidity change in and out with the air pump can't be measured. also, the air is being sent all around the parts that are constantly splashed with oil. no way for the air to get the upper cylinders etc.
my thoughts on keeping rust away are always shut down the engine after getting it hot, remove dipstick cap and keep all the engine metal warmer than the surrounding air.

and i could be all wrong.
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Bob Noffs
n. wi.
dakota hawk/jab 3300 built and flying. sold 6/18.getting serious about the 12. in the hangar now as of 10/15/19
RV-12 kit as of 9/13
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