Paul,

Every wonder how RB aluminum housings look ready to assemble?  These
pictures come courtesy of Russ who arranged them in a 13B format for me
to cherish. He remarked that the aluminum housings are so light he
almost launched one towards the ceiling.  Notice the robust thread
savers in the front housing, and the better oil pathways built-in.

Not sure why there is another hole next to the oil filler neck hole.
Apparently the holes join into the same chamber.


Cheers

Doug in Japan.

Interesting Doug. Thanks for uploading those pics.

That hole looks like a simplification of the rotor oil drain back
and crankcase breathing system. The hole is probably necessary
to support the casting core. In the stock Mazda center housing
there is a core plug in that location.


I like that straight out of the oil pump to the oil cooler
feature. Apparently they have done away with the front oil control valve.
I see no oil passage to the front cover in that area.

I wonder how that oil pump surface is going to hold up.

The other big question is the rotor wear surfaces.

What is the most number of hours RB has with these things
with the latest wear coatings? Has he mentioned anybody that is running them?
Jim has changed coating suppliers a couple of times.

Last but not least what is the current cost of these things?

Paul Lamar

Paul,

Pricey, but when we consider the work that went into these housings well
worth the price for what is basically a low production custom made item.

They range from $1,450 to $1,750
Here is what they have to say about them.

http://www.racingbeat.com/FRmazda3.htm


I believe the oil pressure regulator can be added to the oil pan area if
wet.   Notice the two holes above the oil pump?  The housing can be
easily modified to go wet or dry sump.

Don't know on longivety.  RB will sell them uncoated if you want to take
them down to San Diego and have them detonation plasma spray coated
yourself.

Oil pump surface appears to be the same as the standard Mazda surface.
Russ will be using a 20B pump and I am looking into seeing if the
performance is higher than the 13B.  I would think it should be.

Doug in Japan