I wish I could recall exactly where I found this info, apparently these mods are what Mazda did for high performance engines.. Notice they actually separated the tension rod housings/holes from the housing surface and thinned everything in that area.


Dan Gorsline

This is a severe test. In my 40 years experience with Mazda rotaries  I have
never seen any of this cracking or black coatings this bad.
I have seen the steel liner melted through when run without
coolant until the engine  stopped. Steel melts around 2000 F as I recall.

BTW The ceramic apex seals survived to be used in another engine.

This includes turbo 2 rotor  650 HP drag racing engines.

Obviously they were using organic oil that breaks down around 250 F rather
than synthetic or two cylcel oil.

Paul Lamar

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