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  #1  
Old 05-26-2021, 07:16 AM
propflipper propflipper is offline
 
Join Date: Aug 2010
Location: Ca
Posts: 34
Default Rv-4 Firewall component installation

Hello everyone. I am ready to begin installing all of the accessories attached to the RV-4 firewall. Brake reservoir, solenoids, battery (maybe), etc. I will have horizontal fuel injection and a constant speed prop. A photo of a layout would be very helpful. Thank you in advance for permitting me to benefit from your labors.

Tom
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  #2  
Old 05-26-2021, 07:56 AM
fixnflyguy fixnflyguy is offline
 
Join Date: Jan 2006
Location: Winston-Salem, N.C.
Posts: 1,449
Default A couple things

The -4 is a bit of a challenge due to size and various configurations. Certain things must be in proper orientation. First concern is engine control cable routing and pass throughs. For my carbureted O-320, they come out through the tunnel low and near centerline. Cabin heat, depending on your plan for that has to be routed with ducting from the heat muff. Your oil cooler location can also impact what can be behind it. Here are a couple pics of mine, though not prefect, have worked well so far. My battery is in the tunnel, but I have room to go on right side of firewall if I want. My heat box is on L/H side, but muff is on R/H pipes, so SCAT tube runs around back. My pressure sender manifold is on L/H upper side. The brake reservoir needs to stay centerline and high. Fuel line and smoke system lines are in tunnel down low. Both solenoids are in tunnel on cabin side and out of the way. Really need engine hung to know some things or face relocating them later. Plan carefully, cut/drill once!
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RV-4/N76WE
8A7 / Advance NC
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  #3  
Old 05-26-2021, 08:09 AM
fixnflyguy fixnflyguy is offline
 
Join Date: Jan 2006
Location: Winston-Salem, N.C.
Posts: 1,449
Default More pics of my -4

Here are a couple more pics I have on file.
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Bill E.
RV-4/N76WE
8A7 / Advance NC
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  #4  
Old 05-26-2021, 08:28 AM
propflipper propflipper is offline
 
Join Date: Aug 2010
Location: Ca
Posts: 34
Default Firewall

Great stuff Bill. Thanks a bunch .

Tom
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  #5  
Old 05-27-2021, 11:09 AM
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n82rb n82rb is offline
 
Join Date: Jan 2007
Location: fort myers fl
Posts: 1,067
Default

i would seriously consider NOT putting the battery FWF. even a light weight battery. with a constant speed prop on a 4 you will be very forward with the empty cg. I have a 360, metal hartzell cs, light weight starter and alternator.i am forward of the cg limit empty with the battery in the stock location.

bob burns
RV-4 n82rb
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  #6  
Old 05-27-2021, 03:36 PM
propflipper propflipper is offline
 
Join Date: Aug 2010
Location: Ca
Posts: 34
Default

Thanks Bob
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