This is my littleJohn Deere 70 gt puller.It has a 7hp cast iron techumseh. With some modifications its pushing 10 or 11hp. We havent bored it yet but we will soon. The biggest things we did was add a "Sonic tube" , ported the engine, and changed the electrical to a car coil,milled the head and added an aluminum piston from a mini bike.. The sonic tube has to be a certain length and diameter for your engine. It does something with the pulses of the engine. The car coil is for hotter spark and so we can run racing gas. The hotter spark makes it burn all the fuel and getter more power out of each stroke. The racing gas makes it burn slower.
The Mini bike piston makes it torque up faster.
We also cut the tires which gives it wicked traction. Beats any cut ag-tire around.So after we did that and added a front and back weight bracket and wheelie bar it is a pretty wicked machine.
Edited by 637Yeoman, January 11, 2016 - 03:00 PM.