Mountain Off Road JM200 - Manual

INSTALLATION GUIDELINES for JM200 BombProof™ MOTORMOUNTS:
PLEASE READ THE TERMS-POLICIES ON PAGE 2
Thank you for purchasing M.O.R.E.™ BombProof™ motor mounts. They are designed to fit Jeep® CJ-5, CJ-7, CJ
-8 vehicles from 1972* through 1986 when installing a Chevy V-8 engine. The JM200 mounts are designed to off-
set the engine to the drivers side of the Jeep® frame for front drive shaft clearance at the transmission. This
means that you must use a transfer case with a passenger side front drive shaft, i.e.: Dana 300, Dana 20, Dana
18, Borg/Warner Quadra-Trac®.
* 1972-1975 frames require slight modifications for the JM200 mounts to fit properly.
A short word about Jeep® frames. They had very large tolerances from the factory and the factory used several
“oval slots” instead of round holes to make installing their own parts easier. Add to that fact that most Jeep® vehi-
cles have been used in off-road situations and the frames are usually “tweaked” slightly (or down-right bent!). This
makes it very difficult for us to make these mounts fit perfectly. It may take some effort on your part to make them
fit as you wish. That is one reason that we ship them un-painted so you can modify them as necessary. They are
designed as a starting point and once you have them in place and the engine conversion is completed, you will be
very happy with the end product. We have spent countless hours test fitting them on several chassis with several
engine/transmission combos and the JM200’s fit them all with slight, or no modifications. Remember, you are per-
forming a “conversion” and it will require some effort to complete the project.
INSTALLATION GUIDELINES: The frame side of the JM200 mounts are pre-punched to match the holes on the
Jeep® frame, and the block plates are pre-punched to line up with the Chevy engine block. These mounts are
designed to locate the engine in the proper location in relation to the firewall and radiator. We insist that the en-
gine dictate where the rest of the drive train is located. There is only one perfect location. That is where we have
located it. If installing a Chevy engine in your Jeep® for the first time, simply use the JM200 mounts to locate the
engine by bolting the frame mounts to the frame, the block plates to the block, then insert the 9/16” thru-bolts.
Hint: Place the bottom forward pre-punched holes in the JM200 frame mounts in the forward lower holes in your
CJ frame. The front axle has a pinion limit bump stop welded to the passenger side inside frame rail. It may re-
quire modifications on some Jeep® chassis in order for the JM200 mount to fit properly. After the engine is bolted
in place, then install the transmission and transfer case. When your conversion is completed and you are certain
that everything is correct, we suggest that you weld the motor mounts to the frame as well as the bolts that are in
place.
If you already have a Chevy engine converted into your Jeep®, and are replacing the conversion motor mounts
with M.O.R.E.™ BombProof™ mounts, the holes may not line-up with where your engine is located, due to the
infinite possibilities of engine locations. Don’t panic! These mounts will still work! Simply “slide” the frame portion
of the JM200 mounts forward or back to where your engine is located and weld the frame mounts to the frame.
MOUNTAIN OFF ROAD ENTERPRISES LLC.
P O BOX 690
DELTA, COLORADO 81416
970-625-0500
970-625-3747 fax
E-mail: [email protected]
www.mountainoffroad.com
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Front of Jeep