720 rack setting

I don't seem the get the rmp out of it as I do with my other 720's..about 1050 rmp is it. It runs well and pulls good..just doesn't seem to open up.

also another question on a pony motor on a 58 model. Over the winter I replaced the exhaust pipe from the motor to the big engine intake. The other one was leaking right at the pony manifold. Now the little engine won't rev. It starts and runs but would come up to speed. I have fiddled with carb setting with no luck. any ideas??

Thanks

As for the pony motor, I experienced the same issue with mine and found that the throttle spring was not in the correct place. Most people place the spring directly into a hole in the carb linkage. This position will not allow full throttle operation as it cannot "leverage the throttle open fully. The linkage rod from the governor should protrude throught the carb linkage. The governor rod should have a detent or recess on the end of it. If you place the spring directly on the rod it should fix your problem. Be careful to make necessary adjustment to assure the fellow doesn;t excede 5000 rpm.

I hope this is helpful. These things have worked for me.