HellCreek
08-19-2007, 03:52 PM
I have seen several threads here requesting sizes on FSJ bushings, and I thought I would try to help, so here goes: ( I am going to group Wagoneers, Grand Wagoneers and Cherokees together under the heading "SJ" to keep the thread shorter, but I do know that there is a difference - just not in the spring bushings. Also, the sizes are at the bottom of this post.)
SJs
1963-73 SJ front springs use a RB-71 (RB-128) anchor bushing and a RB-85 shackle bushing.
1963-73 SJ rear springs use a RB-87 anchor (post) bushing and a RB-85 shackle bushing.
1974-75 SJ front springs use a RB-71 anchor bushing and a RB-85 (RB-140) shackle bushing.
1974-75 SJ rear springs use a RB-141 anchor (post) bushing and a RB-85 shackle bushing.
1976-91 SJ front springs use a RB-71 (RB-145) anchor bushing and a RB-85 shackle bushing.
TRUCKS with Rubber Bushings
1963-73 J-truck front springs with rubber bushings use a RB-86 anchor (post) bushing and a RB-79 shackle bushing.
1974-87 J-truck front springs with rubber bushings use a RB-71 (RB-145) anchor bushing and a RB-85 (RB-140) shackle bushing.
1963-69 J-truck rear springs with rubber bushings use a RB-87 anchor (post) bushing and a RB-85 shackle bushing.
1970-75 J-truck rear springs with rubber bushings use a RB-141 (RB-123) anchor (post) bushing and a RB-85 shackle bushing.
1976-87 J-truck rear springs with rubber bushings use a RB-153 anchor bushing and a RB-85 shackle bushing.
TRUCKS with Brass Bushings
1963-73 J-truck front springs with brass bushings use a LHC bushing on both ends.
1963-69 J-truck rear springs with brass bushings use either a LHE bushing for the 7/8" post mount or a NJE bushing for the 1" post mount and a LHE shackle bushing.
1970-73 J-truck rear springs with brass bushings use a NJE bushing on the anchor (post) end and a LHE bushing on the shackle end.
Bushing Sizes
RB-71 1-1/2" O.D. 9/16" I.D. 2-1/2" spring width
RB-79 1-3/4" O.D. 9/16" I.D. 2" spring width
RB-85 1-1/4" O.D. 9/16" I.D. 2-1/2" spring width
RB-86 1-1/2" O.D. 7/8" I.D. 2" spring width
RB-87 1-1/2" O.D. 7/8" I.D. 2-1/2" spring width
RB-123 use RB-141
RB-128 use RB-71
RB-140 use RB-85
RB-141 1-3/4" O.D. 1" I.D. 2-1/2" spring width
RB-145 use RB-71
RB-153 2" O.D. 9/16" I.D. 2-1/2" spring width
LHC 1-1/8" O.D. 7/8" I.D. 2" spring width
LHE 1-1/8" O.D. 7/8" I.D. 2-1/2" spring width
NJE 1-1/4" O.D. 1" I.D. 2-1/2" spring width
There are probably exceptions to this list (they are, after all, Jeeps), but I hope this helps someone.
Thanks,
Tom
SJs
1963-73 SJ front springs use a RB-71 (RB-128) anchor bushing and a RB-85 shackle bushing.
1963-73 SJ rear springs use a RB-87 anchor (post) bushing and a RB-85 shackle bushing.
1974-75 SJ front springs use a RB-71 anchor bushing and a RB-85 (RB-140) shackle bushing.
1974-75 SJ rear springs use a RB-141 anchor (post) bushing and a RB-85 shackle bushing.
1976-91 SJ front springs use a RB-71 (RB-145) anchor bushing and a RB-85 shackle bushing.
TRUCKS with Rubber Bushings
1963-73 J-truck front springs with rubber bushings use a RB-86 anchor (post) bushing and a RB-79 shackle bushing.
1974-87 J-truck front springs with rubber bushings use a RB-71 (RB-145) anchor bushing and a RB-85 (RB-140) shackle bushing.
1963-69 J-truck rear springs with rubber bushings use a RB-87 anchor (post) bushing and a RB-85 shackle bushing.
1970-75 J-truck rear springs with rubber bushings use a RB-141 (RB-123) anchor (post) bushing and a RB-85 shackle bushing.
1976-87 J-truck rear springs with rubber bushings use a RB-153 anchor bushing and a RB-85 shackle bushing.
TRUCKS with Brass Bushings
1963-73 J-truck front springs with brass bushings use a LHC bushing on both ends.
1963-69 J-truck rear springs with brass bushings use either a LHE bushing for the 7/8" post mount or a NJE bushing for the 1" post mount and a LHE shackle bushing.
1970-73 J-truck rear springs with brass bushings use a NJE bushing on the anchor (post) end and a LHE bushing on the shackle end.
Bushing Sizes
RB-71 1-1/2" O.D. 9/16" I.D. 2-1/2" spring width
RB-79 1-3/4" O.D. 9/16" I.D. 2" spring width
RB-85 1-1/4" O.D. 9/16" I.D. 2-1/2" spring width
RB-86 1-1/2" O.D. 7/8" I.D. 2" spring width
RB-87 1-1/2" O.D. 7/8" I.D. 2-1/2" spring width
RB-123 use RB-141
RB-128 use RB-71
RB-140 use RB-85
RB-141 1-3/4" O.D. 1" I.D. 2-1/2" spring width
RB-145 use RB-71
RB-153 2" O.D. 9/16" I.D. 2-1/2" spring width
LHC 1-1/8" O.D. 7/8" I.D. 2" spring width
LHE 1-1/8" O.D. 7/8" I.D. 2-1/2" spring width
NJE 1-1/4" O.D. 1" I.D. 2-1/2" spring width
There are probably exceptions to this list (they are, after all, Jeeps), but I hope this helps someone.
Thanks,
Tom