i am on the fence between a p180 and a titan for my new f84. my bypass would have a little more than 3/8 of an inch clearance all the way around the turbine with a p180, a titan would have considerally more room. i am concerned about fuel consumption with the 180 and the weight of 2 plus gallons of fuel. the f84 should come out around 35lbs dry, so a titan should fly her scale. m knoll in the netherlands flies his f84 with a pegasus. any ideas, thx barry