4mil crank (True & Weld)?

[rhuebner]

At the time that I build my 4mil cheetah cub motor I didn't know you really needed to get your crank true and welded.

What kind of problems will I be looking at in the future since I didn't get that done? Thanks for the help.

[dajogejr]

Impossible to say.

I just saw a stock crank Sunday that had a cheezy weld on it, and it wasn't welded on the outside.

This guy had a ported OEM motor...pipes, etc.

His crank was already separating...and you've got a cub.

 

It could start making noise (to let you know there's a problem) it could lock up completely...it could come apart...really, really hard to say.

 

When you spin a motor to 11 or 12 K...things happen.

[dirt-riceburner]

And when you get the crank welded, install a TZ bearing installed on the powerside as well.