Motorcycle Crankcase Cover Repair

Repair cracked cases text and pictures by mark trotta.

Motorcycle crankcase cover repair.

The casting is not heavily stressed but does have to hold the hot about 140 f oil that lubricates the engine. The ignition cover of my off road motorcycle is a magnesium casting. There are two main reasons why a motorcycle leaks oil. The first reason would be faulty gaskets found on the oil pan valve cover crankcase or the cylinder head of the engine.

I hit a rock and it drove a bolt from my skid plate into the bottom of the crankcase and made a small puncture. When confronted with a cracked engine case the motorcycle restorer has two options find a replacement or have the case welded. How to fix your motorcycle oil leak one fast and affordable repair for a motorcycle engine oil leak is our advanced concentrated main seal motor oil leak repair. Designed to give new life to your main engine seal it can help reduce or completely stop motorcycle engine oil leaks with little hassle.

When i realized it cost 160 to replace the cover i started thinking of the alternatives like how about using this epoxy we make for the repair and save some. To repair cracked cases correctly the case halves need to be separated which requires the top end of the motor to be removed. Video showing how to replace a bronken crankcase cover in a motorcycle. Video showing how to replace a bronken crankcase cover in a motorcycle.

I could have spent more money and bought another left side c. Do this by using c clamps to clamp a sheet of aluminum to a work table. I am looking for suggestions on how if possible to make a reliable long term repair on a crankcase puncture. Use a circular saw with a carbide blade to cut the aluminum so that you end up with a rectangle that will cover the hole in the crankcase and extend at least 1 inch beyond the hole on all sides.