I think what Stewart Warner was referring to a was a reduction in coolant flow
     velocity by using undersize AN line.
     Mazda designed the engine to use 1.5 inch hose and a high water flow
     to equalize the metal temperatures in the block.
     The problem with AN line is you need  -24 (1.5 inch).
     -24 is entirely too stiff to work with. -20 (1.25 inch) is marginal.
     Also these sizes are very hard to find. I used to think AN was the hot
     tip but now I recommend dollar an inch  1.5" silicone hose with Breeze constant
     torque hose clamps.

     It does not pay to nickel and dime plumbing. It will bring you down
     just as fast as a dropped valve in a Lycoming engine.

     Paul Lamar

Paul, Where do you get that 1 1/2" silicon hose? I'm just at the point where I need it.

Brian Trubee

McMaster Carr. Same for the Breeze hose clamps.

Paul Lamar
 
The Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2004 All world wide rights reserved.