I have worked on alot of 3116 in the heavy equipment. There is a easy way to increase the HP of a 3116. If you don't know what you are doing you will damage the engine. If you remove the valve cover you will see a 13mm size bolt with a CAT governor lock tag on it. If you remove the lock tag and bolt you will see the fuel adjusment. It is a 10 mm nut with a 3mm allen screw in the center. Lossen the nut and turn the allen screw out 1/2 turn = about 2psi of boost. There is a special tool for this, but a 10mm socket and allen wrench will work in a pinch. If you get your OT number from the valve cover I can tell you what the max boost your allowed. If any doubts any Cat dealer can do this for you. All Warranties, if any will be void. You are also tampering with emmission control, so you better check first.

[This message has been edited by mac1 (edited 03-23-2001).]