I rebuilt the engine on my H last summer and have had an ongoing issue with lack of power when I take it tractor pulling. The head was decked & rebuilt, oversize stepped head pistons are about the only major modifications. Ever since then some pulls it runs great and others it lacks power. Things I have tried so far:
-Adjust the governor
-Went to distributor instead of mag (even when I had the mag it lacked power)
-Installed a hot coil & plugs
-Tried a larger carburetor (just smoked a lot with it, then took it off shortly after)
-Checked valves
-Checked timing
First thing I am going to do when I get it back out of the barn is check compression but it fires right up and sounds good when it runs, just lacking overall power. Any ideas of where to start would be great.
Thanks!
-Adjust the governor
-Went to distributor instead of mag (even when I had the mag it lacked power)
-Installed a hot coil & plugs
-Tried a larger carburetor (just smoked a lot with it, then took it off shortly after)
-Checked valves
-Checked timing
First thing I am going to do when I get it back out of the barn is check compression but it fires right up and sounds good when it runs, just lacking overall power. Any ideas of where to start would be great.
Thanks!