You can't damage your engine with clutch bell and spur combinations bud.
I'm guessing that you had a S-25 savage of some sort, maybe the SS which came with a 15 and 18 tooth clutch bell.
Think of it this way.
The stock K4.6 savage runs a 17 /47 combo.
You have a .32 engine, so should have a lot more power than the K4.6.
Unless all you want is wheelies I would change the gearing.
Its one thing to have the power but its another thing to be able to get the power down and make the most of it.