Determining Engine Mount Weight Capacity

Below are the formulas to use to determine the required pounds per engine mount.


Formulas

Front Engine Mount

(W x 0.4) x 0.5 = lbs per mount

Back Engine Mount

(W x 0.6) x 0.5 = lbs per mount

W = weight of engine and gearbox

Example:

Total weight of engine and gearbox = 1,200 lbs.

Front Engine Mount

(1,200 x 0.4) x 0.5 = 240 lbs per mount

Back Engine Mount

(1,200 x 0.6) x 0.5 = 360 lbs per mount


General Weight Distribution
R&D Marine Engine Mount weight distribution

  1. Find the center of gravity by balancing on a roller (If possible)
  2. If the center of gravity cannot be found, assume a weight distribution of 60% on the rear engine mounts, with 40% on the front engine mounts (if the rear engine mount is in line with the flywheel)