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Polyurethane Motor Mount Installation Instructions

(The following instructions are also included with new mounts)

    The following instructions are for removal and installation of motor mounts while the engine is in the car.  Due to the many different components available and possible combinations on each individualís car, the following instructions are a guide, as actual installation may vary from car to car.  For safety, we recommend that your current motor mounts are removed and your newly purchased Poly motor mounts are installed by a professional mechanic, with the aid of this guide.  As stated on our website, a 3/8 hex bit for a 3/8 drive ratchet will be needed for installation.

1.  Disconnect the battery and remove any engine tie-down/engine anchor currently being used.

2.  Safely raise the car and support with jack stands

3.  Remove nuts from long bolts that go front to rear, connecting the motor mounts to the frame mounts.  When changing the drivers side only, the passenger side will NOT have to be removed.  Penetrating oil may be necessary/helpful to loosen nuts, and should soak overnight on stubborn nuts/bolts.

4.  Remove those bolts ONLY at this time.  The engine may have to be raised very slightly to allow removal.

5.  Carefully raise the engine as far as possible, making sure that the oil pan is not damaged.  Do NOT lift the car while raising the engine.  Watch for wires, cables, harness, dipstick, etc. at the rear of the engine so they donít get pinched or damaged between the engine and firewall.  Also watch headers, exhaust, intercooler, and brackets, etc. as they move along with the engine.  The area above the transmission is also a potential pinch point.    NOTE:  Extra care, time, and more than one pair of eyes are recommended for this operation.

6.  Support the engine so that it doesnít lower or fall, possibly causing injury while changing the mounts.  With a 3/8 ratchet and 5/8 socket with short/med extension to remove the bolts that connect the motor mount to the block.  The best access is straight in from the side, under the headers, with the ratchet handle just short of where the a-arm attaches to the frame.  The motor may need to be lifted to different heights to make access easier.  An option may be to use a very long extension and universal joint above the front tire.

7.  Remove the mount/mounts. On the passenger side there is limited room, and the mount may need to be rotated to be removed.  If the pass mount wonít come out under the header/downpipe area towards the front, then the drivers side may need to be completely reinstalled and the long bolt installed also, so that the pass side could be jacked up farther by pivoting on the drivers side mount.  If this is necessary, please read ahead for the rest of the installation procedure.  If removal is still not possible due to the inability of raising the engine high enough or interference with aftermarket components, removal of the starter may be necessary.  This will allow the mount to be removed from underneath.

8.  Check the mounting surface of the block for damage and clean if necessary.  Make sure the bolt holes are clean also, and apply a slight amount of oil on all bolts before installing.

9.  Install the new Poly mounts the same way the old mounts were removed.  Make sure the drivers side and passenger side are on their respective sides.  They are NOT the same (look for stamping on sides) and must NOT be switched.  The socket head cap screws and lock washers that are provided MUST also be used, torquing them to the factory specifications.  Do NOT use the factory bolts!  The new Poly mounts have a thicker flange and require the supplied longer bolts and lock washers, which are much stronger than the factory bolts and actually stronger than grade 8 bolts.

10.  Carefully remove the supports under the engine and lower the engine onto the frame mounts.

11.  Re-install original nuts and bolts connecting the engine mounts to the frame mounts, torquing them to factory specifications.  Replace these nuts and bolts if they are damaged with new OEM equipment, or nuts/bolts of the same size of equal or better quality/strength.  The sides of the motor mounts must clamp tightly against the frame pad to prevent excess vibrations.

12.  Check for any damage that might have resulted from raising the engine too much, reconnect the battery and ENJOY!

Note: The use of an engine anchor/tie-down is no longer needed with any engine or at any performance level.