"Brian D. Cain" wrote:

Hey fellas.  I'm assembling an engine tonight and am using the Atkins

Rotary

Kit that comes with the corner seals/springs, apex seals/spring, etc.

along

with their supplied (aftermarket) Viton oil control ring o-rings.  Has
anyone had any experience building rotors using these o-rings in the

control

ring casings?  I'm having a heck of a time getting these things in the
control ring grooves in the rotors; it's almost as if they're a few
thousandths too thick or something.  Any tips?

Thanks,

B

I don't recommend Viton. Teflon encapsulated silicone is good for 100

degrees

F higher temp. The TES sizes we use slip right in. Perhaps the Teflon

coating

helps.  http://www.creavey.com/ The cost is no higher.

Paul Lamar

Brian, I also used Atkins Viton oil control ring 0-rings on my last engine
rebuild (before the TES were readily available) and you are right, they are
tough to get seated in the grooves. Much harder than the stock rings from my
experience with both.    I lubricated the "O" rings with vasoline, placed
them in the metal ring holder and then placed the assembly over the groove
in the rotor.  Then I got a piece of 2x6 plank and placed it over the metal
ring and by pressing my upper body weight on the 2x6 (trying to keep the
force centered on the metal ring center point, I could get them in.  If you
let the metal ring slant to any side, even slightly, it tends to bunch up
(outside the groove) on the opposit side.  Not high tech, but it worked for
me.

Ed Anderson

Spend a few bucks more Brian and put in teflon. Your customer will appreciate
it the next time his engine overheats :) Maybe you can sell those viton rings 
to one of your rotary engine building competitors :)

Paul Lamar
 
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