I HAVE A 83 2.4 MERC. I SPUN THE HUB AND REPLACED THE GEAR HOUSING,BUT DON'T KNOW WHAT THE RAITO IS. IT TURNED 6400 BEFORE NOW IT TURNS 7200. IS THAT TOO MUCH FOR A 2.4. WHAT IS WOT FOR A 2.4. COULD A CHANGE IN THE RATIO MAKE IT TURN THAT HIGH