I have installed a Saito FA 82a in my UCD .46. I have it broken-in and tuned, on the ground anyway. It will be time to maiden and install the cowl soon, if the rain lets up long enough. I have some questions for the experienced 4-stroke guys.

1) The engine is inverted and the vent line is coming out the 'top', (I have a long tube connected to it running it down behind the engine). How do I rout the vent line out of the cowl and keep it short, the mfg says 3" or less....

2) How large should the cowl vent be in order to allow proper cooling. I am running 10% to 15% glow fuel. I have heard that a smaller vent slows down the air and allows better cooling, but I don't want to cook the thing.

3) I have heard that a clogged or long vent line could lead to high pressure inside the crankcase which could blow out bearings or crack the case, has anyone else heard of this?

Thanks!!

Mark