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Looking for info on XR400 oil system

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Im using an xr400 engine in a project, and was wondering which hole was the intake and outake on the engine? and also how much oil is held in the frame down tube vs the crank case?

The lower port is the oil inlet, top is the outlet.

Don't know for sure how much oil is in the frame vs the crank case, but over all, it holds two full quarts.

Yea,yea,yea... I know the book calls for "1.9 quarts" but the extra 3.2 ounces have never caused a problem.

So, I would say that your external tank needs to hold at least 2 quarts.:banana:


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