Here is what the potted p-port tube insert looks like.
This is aluminum oxide filled epoxy potting compound is good to
300 to 350 F. The blue tape keeps the potting compound
from leaking into the port around the bottom of the tube.
It will be polished when the epoxy kicks out and the
tape is removed.

The second picture shows the 1/16th pipe boss for the
hose barb feeding pressure data to Tracy computer. There
is one for each runner.

The third picture shows the potting of the side ports.
These end housings will be lapped until they are smooth.
Just a couple of thou are needed for this engine.
Probably a half hour or so on the lapping machine.

One advantage of having Mazdatrix do your engine is they own
their own lapping machine and can dyno the engine for you
on their own dyno with your intake manifold and or muffler.

Engine parts are still at the balance shop. Any day now.

Paul Lamar

Opps sent one of the wrong pictures.

Here is pic 1

Also a couple of pics of the lapping machine. A dirty job but
somebody has to do it.

Paul Lamar

Douglas Fir wrote:

Paul

Whats the function of the lapping machine?

Doug in Japan

It takes the wear marks out of the end housings without going through the

nitrided

surface. If too much is needed the end housing can be re nitrided.

Nitriding

produces an extremely hard wear surface but only about seven thou deep.

Paul Lamar

Paul, I thought you said they were flame hardened!
George ( down under)

Recent ones are nitrided. Early ones are induction hardened. Current RX8 rotors
are induction hardened only on the corners.

Paul Lamar
 
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