Ken Powell wrote:

Paul,
I have read with interest your intention of not rebuilding your junkyard engine
before flying with it.  If you do fly with it right out of the junkyard, I would
recommend that you use a high quality 2-stroke oil such as Golden Spectro.  Many
of the dirt bike guys seem think that it will actually clean up some combustion
chamber deposits, maybe even ring lands.  I have also had some pragmatic
experience to indicate that this is true and really does take place.  BTW, I
also do not think that flying this engine will be dangerous but you may be down
on HP from what a 'fresh' engine would provide.  I will probably be 'out of
money' by the time I finish my RV-4 and I may do a 'economy' rebuild to fly
until I get the cash to build a really good motor with new rotor housings, etc.

Ken Powell

I am going to check the HP with my dyno test stand mounted on the back of my 
golf cart  before I fly it Ken. As well as the static thrust for that matter.

I am also going to try the spray water into the intake manifold trick and see 
if a bunch of black smoke comes out :-)

Paul Lamar
 
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