Walter Williams wrote:

hi all,    we have examined at least a dozen housings with a 30 power microscope and can find absolutely no evidence of porosity or cracking.  has anyone got proof that they are so made?

 one thing
we would sure appreciate an explanation for is the concave finish grind with a slighly smaller radiis directly on top of the exhaust port. we have an analysis of the steel  liner,  it is a free
cutting manganese steel annealed and very soft. the fingers on the back side appear to be cut with a knurling type tool about 3/8 wide leaving the fingers segmented from one side to the other. the
butt joint where the liner welds together is right where the periferal port is being cut.  we feel that our reman. housings will be better than mazda's. because of the time and care we take doing
the job right. hope to have housings available soon at about $300.00   dont throw away those old housings , we will buy cores. thanks for your help solving the problems.  walt williams
wgw75@bresnan.net.  307-635-4104

I am not surprised there is a deviation from the mathematical trochoid as
you are dealing with the inertia of the apex seals just like a cam shaft
needs to deal with the inertia of a lifter.

How are you coming on the porous chrome plating?

Paul Lamar

Well, if they are going to be selling remanufactured housings that are worth a damn for $300, I'll scrounge a couple of junk motors and start on my backup engine soon.
Brian Trubee

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