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  #1  
Old 10-18-2018, 09:32 AM
Charles in SC Charles in SC is offline
 
Join Date: Aug 2006
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Default Oil seperator questions

Sometime back I purchased and installed an RMJ AERO oil seperator. Two questions for those that have them. The crankcase vent is a 5/8 and the seperator intake is a 3/4. What is a good way to make the transition without welding a new intake spout on the seperator? I cannot find a fitting for the engine side that looks like it will fit. Also what is a good way to connect the oil return to the engine? I have a return line from Anti Splat with a fitting welded in it but after looking at it awhile I am not sure I like that idea. The seperator came with a little strap with a tube in it to put in the oil dipstick but I am not sure I can get enough fall for it to drain properly. The seperator is mounted as high as I can go on the firewall. I have an IO 360. Thanks for any input!
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  #2  
Old 10-18-2018, 10:16 AM
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DanH DanH is offline
 
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https://www.homedepot.com/p/SharkBit...7LFA/202798048

The accessory case has a turbocharger oil return port down low on the right side, usually plugged with a 3/8 NPT allen pipe plug, #13 below

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Last edited by DanH : 10-18-2018 at 10:24 AM.
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  #3  
Old 10-18-2018, 11:09 AM
Charles in SC Charles in SC is offline
 
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Thanks Dan I will look for that fitting on tha accesory case. Also I know about that kind of reducer like the Home Depot one you linked but if I use something like that there is not going to be much hose left for flex. Also I try to stay away from hardware store parts.
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Aircraft structure built.
Going at a snail's pace, life gets in the way.
Wiring done.
Engine hung.
Working on cowling.
RV 7
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  #4  
Old 10-18-2018, 11:53 AM
TS Flightlines TS Flightlines is offline
 
Join Date: Apr 2010
Location: Ridgeland, SC
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On Ed's RV8, we downsized the separator stubs fittings to 5/8 in the crimper, and he then clamped his hose onto the separator.

Tom

It would be nice if they had AN males on them--
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Teflon Hose Assemblies for Experimentals
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  #5  
Old 10-18-2018, 12:02 PM
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DanH DanH is offline
 
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Quote:
Originally Posted by Charles in SC View Post
Thanks Dan I will look for that fitting on tha accesory case. Also I know about that kind of reducer like the Home Depot one you linked but if I use something like that there is not going to be much hose left for flex. Also I try to stay away from hardware store parts.
It's a breather hose. That brass reducer will not be a problem...but for the low, low discount aviation-grade price of $50 (that's right folks, believe it or not, only 5% of an AMU!!), I will cheerfully machine one to your drawing, from 6061-T6
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  #6  
Old 10-18-2018, 03:11 PM
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airguy airguy is offline
 
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Location: Garden City, Tx
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Quote:
Originally Posted by DanH View Post
It's a breather hose. That brass reducer will not be a problem...but for the low, low discount aviation-grade price of $50 (that's right folks, believe it or not, only 5% of an AMU!!), I will cheerfully machine one to your drawing, from 6061-T6
Oooohhhh!! That's military-grade, right?
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Built an off-plan 9A with too much fuel and too much HP. Should drop dead any minute now.
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  #7  
Old 10-18-2018, 07:28 PM
Charles in SC Charles in SC is offline
 
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Quote:
Originally Posted by DanH View Post
It's a breather hose. That brass reducer will not be a problem...but for the low, low discount aviation-grade price of $50 (that's right folks, believe it or not, only 5% of an AMU!!), I will cheerfully machine one to your drawing, from 6061-T6
Thanks for the offer Dan, I will make my own if I decide to go that route.
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Aircraft structure built.
Going at a snail's pace, life gets in the way.
Wiring done.
Engine hung.
Working on cowling.
RV 7
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