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EJ257 Build

Practical Engine Building

Discussion and questions related to the course Practical Engine Building


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Hi Guys,Andre,

I am presently rebuilding a EJ25 motor for around 1000HP. What’s your recommended main and rod bearing clearances? Was thinking of the rods set to .002-.0025 and mains .0015-.0017. The motor was built before with .0026 mains but oil pressure got low (45psi) at high rpms.