Do you have access to Rhino 3D drawing program? There is no such
 thing as a 3 view drawings with dimensions these days. Everything is
 done with IGES files. The dimensions are hidden.

 The wear plates can be made in at least two ways. A stock cast iron
 end housing can be cut down or a new one made of of hard 4130 sheet
 laser cut and then chrome plated like the stock rotor housing.

 Paul Lamar

Hi Paul,
My buddy uses Autocad and Solidworks, but he can convert IGES to these. I saw them last night and they develop well for the machines.
As for the plate, I have done a number of laser cuts, like brake disks and engine block girdles, so that is the way I may go.
I spoke to a specialist anodiser on Friday and he has done hard anodised Rotorary housings yielding 70 Rockwell; says it is better than detonation coating, so is it possible that we do not need a wear plate?

It looks like you whittle the end housing out of solid, or do you have them cast?
I was thinking about hot exhaust gas, would the al hsg handle the heat through a side port housing or would we need a PP exhaust?

Have you visited Billet Inc on Facebook? They are located in Brisbane and  make beautiful al end housings and 4 rotor engines for the drag racers, -suggest you take a photo tour. You may remember John Otter the engine builder; well I caught up with John yesterday and he recommended Billet Inc. John still builds the odd engine but is occupied with business interests. He has a 20b engine under his bench that I lust after, but I have no real use for.
A lot of questions there so thank you for taking the time to get me up to speed.
Rs,
Dave in Oz

Well it would be good to try and see how it works.

I haven’t made any yet. Larry Childs has. He is a bit secretive about
it so I did not take any pictures. Of course Racing Beat has theirs cast.

Watch out for the main bearing oil gallery that they do not partially block
the water flow to the lower spark plug cooling channels. The Racing
Beat and stock cast iron housing versions do.

I suspect that is why the lower spark plugs were overheating on the TTC engine.

All this does is simplify the front end housing by removing all the oil
pump plumbing and rotating the front main bearing oil gallery
to get it out of the way of the water passages to the
lower spark plugs. Notice the tension bolts are not screwed into
the front cover. Nuts are used instead.

All the oil plumbing and
the oil pump are replaced by the off the shelf dry sump pump.

Paul Lamar

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