Rosspilot wrote:
Assuming it's time for overhaul . . .

With a 1967 H-model Skyhawk, does anyone on this NG know what the most powerful
replacement/upgrade can be added to this airframe?

I have the 145 HP Cont O-300 . . . would LOVE to get to 180 HP . . . can it be
done?

Someone else said, "Why would you want to go from a smooth running, fuel
sipping six cylinder to a vibrating, fuel gulping four cylinder?"

I agree, especially when you can go to a smooth running, fuel sipping
six cylinder that has 220 hp. The Franklin 220 is STCed for your 172, I
believe. Check out http://franklinengines.com/cessna.cfm

Don't know the cost. I have one friend who installed a Franklin 220 in
his 170A. I think it set him back about $25,000 total.

--
David Hill
david at hillREMOVETHISfamily.org
Sautee-Nacoochee, GA, USA