Subject: Lemans 4 Rotor Cooling
From: ACRE
Date: 12/22/2004, 1:07 PM



     > Kelly Troyer wrote:
     > >
     > > Paul,
     > > Do you have any additional info on the Lemans 4 rotor cooling
     > > system you made mention of in previous post ? Drawings, etc...
     > >
     > > --
     > > Kelly Troyer
     > > Dyke Delta/13B/RD1C/EC2
     >
     > Nothing on that at all. If you mean the ribbing inside the rotor housing
     > I don't think that was done. At least Mazda did not mention it in the
     > SAE paper they wrote about the engine. I suspect that is unnecessary until
     > you get over the 300 HP per rotor mark. I am not even sure it is  needed.

      Paul,

         Found this info on "Granny's Speed Shop" website about the cooling

     system of their 4 Rotor engine (made from two 13B's).......Info on internal

     mods to help direct coolent has not been posted yet (a work in progress

     as time allows)........External mods are evident and explained below......The

     attached photo will answer many questions........FWIW



     Kelly Troyer



     The water pump housing is modified so that the output can not flow into the front engine from the front housing, but instead is re-directed into an external distribution manifold. From
     here, the coolant is split and directed into the top of the center housing of each engine. The modified rotor housing coolant flow is into each center housing from the top, clockwise (from
     the front) around to the top on the right side, cooling the combustion side of the engine first, then to exit ports that return the coolant to the radiator. No thermostat is used, only
     center housing outlet restrictors to regulate coolant flow rates and engine temperature.


Looks like they made their own center housings as it is not possible
with stock housing. The second picture I provided is of a cutaway
center housing. Smells like an April fools joke at best and a bunch of
idiots at worst.

Not something we need to worry about. They didn't need to worry about it either :)

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.