I learned never to play truth or dare. It's either embarrassing or gets you arrested. [sm=red_smile.gif]

Off topic, but still about breaking in engines:

We run our drag motors (500 cubic inch) on the dyno after a 20 minute run to break in the cam. After the cam is broken in, strap it to the dyno and give it hell!! It's pretty cool to see how changing the spark plugs or timing will give you 50HP more. Or change the thermostat will give you 10HP more at 6800RPM, but 10HP LESS at 8500RPM. Changing the header length (shorter) usually picks up RPM to a point. There's a neat and simple way to figure out how long your headers need to be. Run a grease pencil down the header tubes. The spot where the grease stops melting is where you cut them off. The motors are built with a few thousandths extra clearance on the mains and rods. It lets in more of that 50w oil and lets them wrap up faster. A standard 500 mile break in that you'd normally do for your wifes minivan doesn't work on these engines. They run about 50 miles before we tear them down and rebuild them. [X(]

Airplanes are CHEAP compared to drag racing. The cost of a DA150 won't even buy you a good set of bare heads for a drag motor. ONE custom ground cam costs as much as a DA50. Shoot! a good set of ROD bolts cost a couple hundred bucks! And you throw them out when you rebuild the engine.

I'm learning how to balance the motors INTERNALLY. We're supposed to work on a little 289 Ford engine this weekend. Should be cool.