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01-02-2018, 01:12 PM
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Join Date: Apr 2013
Location: Lincoln, CA
Posts: 14
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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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01-02-2018, 01:21 PM
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Join Date: Jul 2009
Location: Mojave
Posts: 4,652
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Yes, you can T into the MAP line.
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WARNING! Incorrect design and/or fabrication of aircraft and/or components may result in injury or death. Information presented in this post is based on my own experience - Reader has sole responsibility for determining accuracy or suitability for use.
Michael Robinson
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Harmon Rocket II -SDS EFI
RV-8 - SDS CPI
1940 Taylorcraft BL-65
1984 L39C
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01-02-2018, 07:01 PM
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Join Date: Jan 2005
Location: SC
Posts: 12,887
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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,
__________________
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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01-04-2018, 06:02 PM
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Join Date: Aug 2014
Location: Simpsonville, SC (SC47)
Posts: 312
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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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Jeff Warren
Simpsonville, SC (@SC47 > 10nm NW Triple Tree)
1946 Bellanca Cruisair 14-13-2 (73 YRS OLD 8/15/19)
RV14A (N14ZT), Ser#140195
Start 10/11/14
Dues paid 12/1/19 (USArmy 2/67-2/70)
www.mykitlog.com/jeffw@sc47
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01-05-2018, 11:04 AM
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Join Date: Oct 2008
Location: Atlanta, GA
Posts: 254
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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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John Morgan
Atlanta, GA KPDK
N613SC
RV6A -SMILIN 1
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01-05-2018, 01:13 PM
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Join Date: Jan 2005
Location: SC
Posts: 12,887
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Quote:
Originally Posted by morganjp
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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What engine ports are you talking about?
__________________
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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01-05-2018, 03:11 PM
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Join Date: Oct 2008
Location: Atlanta, GA
Posts: 254
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Primer ports for cylinder 3 or 4
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John Morgan
Atlanta, GA KPDK
N613SC
RV6A -SMILIN 1
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01-05-2018, 04:25 PM
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Join Date: Jan 2005
Location: SC
Posts: 12,887
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Quote:
Originally Posted by morganjp
Primer ports for cylinder 3 or 4
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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.
__________________
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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01-05-2018, 06:22 PM
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Join Date: Jan 2012
Location: Oconomowoc, WI
Posts: 460
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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!
Last edited by Aircraft Specialty : 01-05-2018 at 07:55 PM.
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01-06-2018, 07:13 AM
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Join Date: Aug 2015
Location: Leesburg, VA
Posts: 492
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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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