I'm looking into ordering several different sizes and kinds of o-rings

to

perhaps
build a 13BT o-ring kit for the auto guys.  This is very, very

interesting

as I'm
a believer in reliability as being the undergirding of real performance.

B

Hayes Rotary Engineering claims you can reuse the TES O-rings.

Paul Lamar

-"Brian D. Cain" wrote:

Right, and every bit of that is contingent on how long the teflon sheath
lasts in
the automotive environment.  That's the one question I've got thus far about
switching to all teflon-encapsulated silicone/viton rings and doing away
with the Mazda junk, er, rings.  :)  That's why I'm looking for some
practical
data that anyone may have using these long-term.  I very well may be that
person on this list -- My 13BT that I use to race (produced well over 400
hp and 320ft/lbs of torque at the drive wheels) and daily drive uses the
teflon (FEP) encapsulated silicone inner water jacket o-rings since the last
build in March of 1999.  By the way, I nearly overheated the engine the
other day on accident and saw my water temp gauge sitting in the 240F
degree range.  After letting it cool down, it still runs fine and there's no
sign of combustion gas blow-by into the water jacket.  This stuff is
awesome!

B- 

Ed Anderson and Perry Mick may have a few hundred hours on their TES O-rings 
by now. Chuck Dunlap probably has ten or so hours on his TES oil
scraper O-rings. Apparently we are going to have to wait ten years
to prove to some people that TES O-rings really work :-) The irony is
that in a lot of cases they are cheaper than the Mazda parts.

Paul Lamar

 
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