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  #1  
Old 01-02-2018, 02:12 PM
Junk8 Junk8 is offline
 
Join Date: Apr 2013
Location: Lincoln, CA
Posts: 13
Default EMAG MAP HOOK-UP

I have the YIO-390EXP10 Lycoming engine installed. I ordered it with the EMAG already mounted. Anyone know where the MAP line gets hooked up? I have a Dynon MAP sensor on the firewall which is connected to the side of the engine. Does the EMAG line get "T"d into this line? Anyone else have this configuration?
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  #2  
Old 01-02-2018, 02:21 PM
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Toobuilder Toobuilder is offline
 
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Yes, you can T into the MAP line.
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  #3  
Old 01-02-2018, 08:01 PM
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N941WR N941WR is offline
 
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Mike is right, T into the MAP line going to your EFIS MAP sensor; however, you need to add a restrictor in the line before the "T".

Perform a search on "Manifold line restrictor", there are a LOT of options,
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RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
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  #4  
Old 01-04-2018, 07:02 PM
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jeffw@sc47 jeffw@sc47 is offline
 
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Tom at TS Flightlines knows exactly what to do. Made a double T for me for two Pmags.

www.tsflightlines.com
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1946 Bellanca Cruisair 14-13-2 (72 YRS OLD 8/15/18)
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  #5  
Old 01-05-2018, 12:04 PM
morganjp morganjp is offline
 
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Location: Atlanta, GA
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I run a single Pmag on my O360 now but When I was running dual P mags I had a separate map line for each unit connected to the engine ports and that worked fine.
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  #6  
Old 01-05-2018, 02:13 PM
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N941WR N941WR is offline
 
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Quote:
Originally Posted by morganjp View Post
I run a single Pmag on my O360 now but When I was running dual P mags I had a separate map line for each unit connected to the engine ports and that worked fine.
What engine ports are you talking about?
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Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
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www.repucci.com/bill/baf.html
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  #7  
Old 01-05-2018, 04:11 PM
morganjp morganjp is offline
 
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Primer ports for cylinder 3 or 4
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  #8  
Old 01-05-2018, 05:25 PM
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N941WR N941WR is offline
 
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Quote:
Originally Posted by morganjp View Post
Primer ports for cylinder 3 or 4
Thanks, I thought I might have missed something.

Be sure to put a restrictor in each line. Otherwise your P-mag's timing will bounce all over the place and will not be in time with each other. This is especially important since you have two different MAP sources.

The reason for the bouncing MAP readings w/o a restrictor is that when the intake valve closes it creates a high intensity, short duration positive pulse in the MAP line. The restrictor smooths these out.
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Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
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  #9  
Old 01-05-2018, 07:22 PM
Aircraft Specialty Aircraft Specialty is offline
 
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Location: Oconomowoc, WI
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We currently have the dimensions for a complete firewall forward fuel, oil, and PMAG hose setup with a dual PMAG installation for the RV-14. We are compiling a bit more data and pictures and will be releasing it officially in a few weeks. If anyone is ready before then or has any questions, we can build the packages but do not yet have them available on our website for online ordering.

Have a great weekend and happy building!
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Last edited by Aircraft Specialty : 01-05-2018 at 08:55 PM.
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  #10  
Old 01-06-2018, 08:13 AM
Nova RV Nova RV is offline
 
Join Date: Aug 2015
Location: Leesburg, VA
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I have the hoses from Steve and Aircraft Specialty for my 14A and dual P-Mags and everything fits perfectly and is a nice upgrade from the stock hoses.
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RV-14A kit # 140243 (flying as of 11/18)
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