Pat 12 gets a nose job

[Phil Waterman]

Hi Tony

Going old school on graphing the data makes it even more interesting.

Agree on splitting the thread to put the cooling system discussion in one thread and the rest of the nose job in another makes senses, will see if I can figure out how to do it.

Worked yesterday and hope to finish today the water pump conversion. The directions with the conversion plate spend a lot of time on the fan/water pump speed. When I did this conversion on the 261 I did run the engine on the test stand with big pulley on the crank and a small one water pump. That combination seriously over speeded the fan. Particularly with the 6 blade CMP fan, which when you cracked the throttle sounded like a plane, with a really strong prop wash. Air flow was so strong that it was sucking oil out of the oil breather. Was really concerned about the fan failing from being overspeeded so swapped the pulleys around from engine to engine to get the speed down.

Now out to work on the truck.

Cheers Phil