I would have the crank counterweights reduced. Even just a bevel on the edge where you need clearance.
Calculate your bobweight (estimate) from the parts you will use. Check with Eagle for the approximate bobweight that specific model crank comes with.
I think you will find a lot of weight will need to be removed from the crank.
For example:
Piston 564.0
.990x2.93x.185 Pin 178.5
Spiro locks 4.5
Rings 45.0
I-beam small end 247.0
Con rod big end 517.0
Con rod big end 517.0
Con rod bearing 52.0
Con rod bearing 52.0
Trapped oil 4.0
Bob Weight 2181
From the Eagle website, it looks like the crank should be about 2500 gram bobweight before balancing.
If your actual parts produce a required bobweight around 2200-2300 grams, the crank will be full of holes from the balance shop. Unless you tell them to reduce the counterweight diameter.
