Cracked Lower Crankcase Repair

Moyomoto · Post by **Moyomoto** » Thu Jun 11, 2015 10:24 pm

Is this crack in the lower crankcase repairable? If yes, how so? Is the repair worth it or would it be better to buy an entire new case for under $100 shipped on ebay? Thanks in advance.

G-Man · Post by **G-Man** » Fri Jun 12, 2015 1:26 pm

It could probably be repaired but easier just to use a replacement lower case. That way you get to keep your original number.....

G

Moyomoto · Post by **Moyomoto** » Fri Jun 12, 2015 5:35 pm

G-man. How could it be repaired? Take it to a welder? I've found entire cases for $70-$99. For $70 for a lower it just sounds easier. And yes, getting to keep my number 😁

G-Man · Post by **G-Man** » Sat Jun 13, 2015 12:21 am

Yes the part would have to be cleaned and prepared by grinding out the cracks to allow penetration of the weld.

You might need some machining afterwards if there is any distortion or extra weld material.

G

Moyomoto wrote:G-man. How could it be repaired? Take it to a welder? I've found entire cases for $70-$99. For $70 for a lower it just sounds easier. And yes, getting to keep my number 😁

Nick · Post by **Nick** » Sat Jun 27, 2015 5:16 pm

I would weld it: cheaper, plenty strong and....using mismatched cases is usually not a good idea.

LOUD MOUSE · Post by **LOUD MOUSE** » Sun Jun 28, 2015 12:25 am

.<<<<<<<<<<.using mismatched cases is usually not a good idea.>>>>>>>>>>>>>

These cases Don't Mismatch.
They interchange perfectly.
This is a HONDA Engine. ..................lm

Nick wrote:I would weld it: cheaper, plenty strong and....using mismatched cases is usually not a good idea.

bamacl · Post by **bamacl** » Sun Jun 28, 2015 5:45 am

Very true. Only the plain bearing cases are a matched/machined pair.