George,

No you are correct.  I don't a O-ring in that application.  It will
eventually wear unevenly, ingest grit and not seal as well as other seals
designed specifically for that purpose  but it is a mute point now because
for the prototype it should work fine.  BTW I liked your design because it
eliminates the possibility of air leakage "BETWEEN" the two ports which
could be a factor in the timing.

So... George I am starting to come around to the P port way of thinking.

You

warned me about this:)  I will be totally convinced when we get within 10%
of the famous "one half Lemans engine" output at any rpm setting.  More

dyno

time is needed of course and I wonder if it is a money constraint or

Dave's

need of the dyno for other purposes?  Is there a possibility of setting it
up on another dyno in another location?  Paul has done a lot of work and

it

seems a shame to install it in an aircraft without further tweaking.

I still can't get my mind around the advantages or disadvantages of a
RENESIS P port though.  Someone will have to make one and dyno it to be

sure

I guess.

Cheers


Doug

Doug,
So what's the best seal type, in this location?
George


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