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-   -   EMAG MAP HOOK-UP (http://www.vansairforce.com/community/showthread.php?t=156546)

Junk8 01-02-2018 02:12 PM

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?

Toobuilder 01-02-2018 02:21 PM

Yes, you can T into the MAP line.

N941WR 01-02-2018 08:01 PM

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,

jeffw@sc47 01-04-2018 07:02 PM

Tom at TS Flightlines knows exactly what to do. Made a double T for me for two Pmags.

www.tsflightlines.com

morganjp 01-05-2018 12:04 PM

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.:):)

N941WR 01-05-2018 02:13 PM

Quote:

Originally Posted by morganjp (Post 1230058)
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?

morganjp 01-05-2018 04:11 PM

Primer ports for cylinder 3 or 4

N941WR 01-05-2018 05:25 PM

Quote:

Originally Posted by morganjp (Post 1230099)
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.

Aircraft Specialty 01-05-2018 07:22 PM

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!

Nova RV 01-06-2018 08:13 AM

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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