Subject: RX8 water pump mods
From: rotaryeng
Date: 10/4/2013, 8:07 PM
To: AAA-rotaryeng



The preferred place for the radiator is on the cool or spark plug side of
the engine. The water pump inlets and out lets are on the hot side
complicating the plumbing.  I suggest cutting off the top of the RX8
front cover and that includes the alternator mount and welding
in a 1.5 inch  OD 90 degree tube bend. The top mounted
alternator won't fit under a lot of cowls anyway.

This works for the 13B water pump as well.

This will cut about 18 inches of pipe or hose out of the water plumbing.

If the rad is under the engine use a 180 degree bend to go straight down.

Paul Lamar



wrong set of pictures.
Here is the right set :)

Paul Lamare
-- 


Here is a 13B water pump that I just modified for the RV4. Mike put a pressure
can on the firewall so this points at the pressure can.

I moved the pressure can over to the center of the firewall.
All this gave me better access to the oil filler neck now
on an extended oil pan behind the engine. Less clutter behind the engine.


A firewall forward for tandem airplane is tricky with out the cowl
cheeks to put things in but it makes a fine looking P51
replica. Mike did a fine job so these modes are hindsight :)

This is a very tricky water pump mod. Barely enough room for a 1.5 inch water tube.
Best done on a mill with a boring tool.

The boss on the new cover is for a water pressure gage fitting.

Paul Lamar

-- 

 The Rotary Engine News Letter. Powered by Linux.
 ACRE NL web site. http://www.rotaryeng.net
 You Tube http://tinyurl.com/beqqxas
 Copyright 1998-2013 All world wide rights reserved.