Subject: New front cover design
From: Rotary Engine
Date: 11/29/2009, 10:13 AM
To: AAA Put this in the To box


  Perhaps its time for a new front cover. The best place for the water
 rad is
 turning out to be on the spark plug side of the engine.  Unfortunately
 that
 complicates the pluming somewhat because the water pump inlet and
 outlet are
 on the other side of the engine.  Perhaps we should take a page out of
 the
 RX8 design and make a new front cover incorporating the water pump
 housing
 with the water coming out and going in on the other side of the engine.
 Another problem is the pump should be mounted as low as possible so
 any drop
 in water level will not cause the pump to cavitate.  We built some remote
 pumps a few years ago that used the stock Mazda pump cartridge.  One
 other
 point is the pump would be more eff.  if the water came stright into the
 impeller.  Here are some shots of that remote pump.  I am looking for
 feed
 back here.  Does anybody else have an ideas they would like to see
 incorporated.


   Paul Lamar

 What do you guys think of paying $200 for this proposed water pump
 cartridge?

 BMW High Performance Water Pump

 The BMW High Performance Water Pump is a direct replacement pump
 designed to fit a wide range of BMW engines with no modifications.
 That includes accepting the Factory Fan Clutch. The front of the BMW
 High Performance Water Pump is stock appearing giving it that classic
 BMW look while the back is all business.

     * Up to 20% increase of water flow over stock pump
     * Twice as efficient as factory pump
     * Much less parasitic drag than other pumps
     * Racing or Stock Factory Replacement applications
     * Stainless steel impeller
     * Heavy duty bearing
     * High quality water seal

 I like it as it would be easy to machine the new front cover to accept
 this pump cartridge. That is not the bottom line for the cost as one
 must start with a 60 pound block of aluminum at $3 or $4 a pound.
 Total $180 to $240 for material alone. We are not done yet as this
 does not include the price of machining.

 Is it worth it? I don't think so. Am I wasting my time here?

 One could get a RX8 front cover and cut the aluminum pump part off and
 it would fit a 13B. Or buy a 13B after market aluminum cartridge for $50.

 What do you guys think?

 Paul Lamar

 Paul

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I am for this 150%...I brought this up awhile ago............I would
help in whatever way necessary to put this together...this is something
sorely needed for an AC application...

Find the right guts and we can machine components around it for our
specific  design....

what do you think???


jeff

----------------------------------------------------------------------------------------

I don't know Jeff.... we are looking at least $600. A lot of aluminum to be hogged off and thrown away.

I also like the Ford cartridge. What we would need for the Ford is a new WP housing that could be remote mounted. We would also need a water in and out fitting for the block.

The cut off  RX8 pump could also be remote mounted in the same place.

I think this would be a much cheaper way of doing the same thing.

Of course there is nothing really wrong with the stock system and it works well.

Paul Lamar


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