Engine change

[r.stinchfield]

I need your advice.My Thundergull J 1 currently has a 618, E gearbox, 18 gallon tank.Empty weight is 550#. I want to get it back to stock. 503, c gearbox, ground adjustable prop. My goal is to keep it simple. Mix oil and gas,keep 18 gal. fuel tank. Any pros or cons. Thanks Ron Stinchfield

[rileywinglowe]

I would highly recommend it. My 503 In Flight Ivo Prop J1 weighs 388. It has oil injection, C box, and the 10 gallon tank. Love it.

[blaswichk]

Get the 503 with the oil injection and be done with pre-mixing. Better oil distribution when the engine needs it, and less carbon build up. What are you going to do do with the 618?

kb

[earthstaraircraft]

Hi Ron
My favorite engine is the HKS 700 e for your plane. The 503 is my second
choice but burns twice the fuel. 10 gallons is plenty for both and saves a
lot of weight both by carrying less fuel and your tank is heavy thick wall
plastic.
I think we have a used 503 that was taken off to install an HKS if you want
a 503.
Happy Flying
Mark

In a message dated 5/30/2013 10:52:37 A.M. Pacific Daylight Time,
r.stinchfield@yahoo.com writes:




I need your advice.My Thundergull J 1 currently has a 618, E gearbox, 18
gallon tank.Empty weight is 550#. I want to get it back to stock. 503, c
gearbox, ground adjustable prop. My goal is to keep it simple. Mix oil and
gas,keep 18 gal. fuel tank. Any pros or cons. Thanks Ron Stinchfield