[NSRCA-discussion] engines woes

[Anthony Romano]

Having some trouble with my RX having an erratic idle and an appetite for 
glow plugs before the Nats. Replace both bearings that seemed perfect, as 
was the rest of the internals, and cleaned some carbon of the piston before 
the Nats. Idled and ran better but was a little tight on the next run. This 
seemed to improve quickly as the bearing seals seated but down on power.
Got to Muncie and was a bit down on power. After ingesting another plug from 
over twisting the needles I was given a remedial needle valve lesson by Ron 
Lockhart and switched to 30% Nitro. Made it through the Nats without much 
power.
Today went to back to 20% for the lower heat and made sure I had the needle 
set 7600 rpm launch from a 7800 rpm peak on a pinch. When taxiing it loaded 
up and quit and wouldn't restart. Another new plug and double check the 
needle and made a weak flight. Second flight same thing but this time got it 
restarted without replacing the plug.
Now here is the interesting part. This engine has always had a lot of fuel 
gooped on the head and header. Today noticed a lot on the bottom of the 
plane. I am thinking either a bad ring or some damage to the crank port or 
the case. Any other ideas?

OS 1.40 RX
SS bearings
Aeroslave pipe 25.25 from baffle to plug
15.75*10*3 APC
20% S&W fuel
OS type F

Can't afford to change to other power source so any ideas on this one would 
be helpful.

TIA

Anthony