Home Forums Shifter Karts When to open bottom end? Reply To: When to open bottom end?

Jimmy Callaway

Yes, the next move I’d definitely splitting the case. And yes, crank bearings would be too easy to pass up. What I’m trying to figure out is whether I need to replace the crank and rod assembly. Are the rod needle bearings very susceptible to debris damage as compared to a conventional babbitt rod bearing (that is very sensitive to debris).

When bottom ends give up what usually happens? Are we talking broken crank/rod (and killing the case) or a nondestructive seizing of the rod bearing?

Just trying to get a feel for what I’m up against cost wise and risk wise.