Zero clearance side seals round 2. (If you don't mind Barry)

[RETed]

Originally Posted by Barry Bordes

Ted, I am a little surprised that you, as a moderator, would become an advocate for someone over the truth.

I was under the impression that you had disassembled many engines.....
Certainly you should have observed what is depicted below.

On the left side you see the wear from driven side seals... on the right observe that there is a ghost of wear ..... no wear whatsoever.

Barry

[URL=http://s287.photobucket.com/user/bbordes/media/EFR%20Manifold/engine%20pictures/IMG_11781_zpsbvhj0p2s.jpg.html][IMG]http://i287.photobucket.com/albums/ll129/bbordes/EFR%20Manifold/engine%20pictures/IMG_11781_zpsbvhj0p2s.jpg[IMG][URL]

Nah, I like the truth actually...

My conclusions are with discussions with someone with a Masters degree in Mechanical Engineering.

We blew up a 13B-REW with no turbo (long story) that only managed to put down 130 - 160hp at the wheels on a DynoJet.
The engine was running milled 3mm rotors with 3mm apex seals.
HOW DO YOU BLOW UP SOMETHING LIKE THAT?

The apex seals did not have chipped corners like most of your failed apex seals.
(You did tear down enough engines to observe this, right?)
The apex seals were cracked straight down the center - height-wise, of course.
I have never seen apex seal failure like this except for this one particular incident.
The mechanical engineer stated that this failure was a consistent with a harmonic oscillation failure of that type of material.

Why am I talking about apex seals when you're taking about side seals and corners seals?
You're smart enough to make that connection, right?

Oh, and just to back that up...
It's been documented by Mazda in a Mazda technical review used as reference for an SAE paper.
You're smart enough to go look that up too, right?

So, you posted a pic of just about 3 engine's worth of corner seals...
How about the other thousand you've come across in your experience?
Are you going to state that all the other thousands of corner seals look exactly like the ones in your pic?


-Ted