MODIFYING ENGINE MOUNTS by Adam Smith
The objective of the modifcation is to compress the engine mounts before they
are installed. To do this 4 screws will be inserted and fastened through the
two metal plates which sandwich the rubber inner part of the engine mount. These
tend to rip and stretch over time, especially the right side mount which gets
soaked by oil occasionally when the oil filter is changed and oil spills onto
it. This procedure will lessen the isolation dampening of the vibrations of
the engine but will greatly prolong the life of the mounts on a modified turbo
engine.
- First find fasteners, nuts of sorts, which can be recessed into the rubber
of the engine mount, but apply force on the metal surface of the mount. These
fasteners should not protrude much from the surface of the engine mount. The
ones that I found are simple threaded cylinders which are flanged at one end
to apply force to the surface of the metal engine mount. Four are needed for
each engine mount.
- Find four screws which will thread into the fasteners but will not protrude
the surface of the engine mounts when fuilly compressed, they must have bevelled
heads.
- Drill four equally spaced holes in the engine mounts, through the rubber
and both metal plates.
- Bevel the side which the screws are to go on to countersink them for an
almost flush finish.
- Insert the fasteners(nuts) into the holes which have been drilled accordingly.
- Place the mount with the screws begun in the fasteners, into a vice, and
help compress the mounts.
- Tighten the screws enough to take out the slack of the compressed engine
mount.
Third Engine Mount:
Using one of your old broken engine mounts, a third engine mount can be made
to relieve some of the stresses caused by acceleration.
- Cut an old engine mount as close to the metal plate as possible. One metal
plate should still be secured to the rubber.
- Unmount the engine and hoist it up slightly.
- Position the newly cut enginemount under the corner of the oil pan on the
right side of the engine(exhaust side). rest the mount on the cross member
which the engine mounts are bolted to.
- Drill a hole in the cross member so that the cut engine mount can be bolted
through the crossmember and the corner of the oil pan will rest on the rubber
of the cut engine mount.
- Bolt the cut engine mount to crossmember and lower engine and refasten engine
mounts.
Probably one of the cheapest modifcations to your turbo brick to ensure that
your engine mounts will last more than 1000miles.
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