(The following instructions are also included with new
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
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.
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.
care, time, and more than one pair of eyes are recommended for
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.
remove the supports under the engine and lower the engine onto
the frame mounts.
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
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.