i was replasing a stripped spur on my HPI MT and put a ner clutch bell on it too(has like 2 more teeth) and when i pushed the truck it did not move as freely as the old one did, any help would be nice but i need to know tonight!

Me thinks it's your gear mesh. Sounds like the motor is pushed too hard agaist the spur gear making it bind between the teeth. I've had that same problem when I went with a larger clutch bell because the clutch bell with more teeth has a larger radius. THe 15 tooth bell has just enough room to fit.

if i run it will it be a bad thing? that was what i was really trying to ask, sorry about that.

yes, It will probably ruin the spur gear.

just reset the mesh just lossen the screws under and reajust the mesh its not that hard to do and ya it will knock teeth of the sper

just reset the mesh just lossen the screws under and reajust the mesh its not that hard to do and ya it will knock teeth of the sper

In that car the mounts are part of the crankcase. It's all preset if you still have the original .15FE engine in there. Just buy some motor mounts and use that instead of the built in ones and reset the gear mesh. If you run it too tight you will definitly destroy your new spur gear.