Exhaust manifold bolt backing out
#1
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Exhaust manifold bolt backing out
The frontmost bolt of my exhaust manifold keeps backing itself out, despite swapping it with different grades of bolts. Loktite probably wouldn't withstand the heat, and wouldn't a split washer just expand and contract with the rest of the metal and eventually back out anyway? Any ideas?
#2
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Year: 1987 MJ, 1998 XJ, 1973 J2000, 89 waggy
Model: Comanche (MJ)
Engine: 4.0L H.O
i recently did swapped my manifold out for a better one and never had issues......
are you sure your torque-ing them down enough??, may be a dumn question but i figured i'd ask
are you sure your torque-ing them down enough??, may be a dumn question but i figured i'd ask
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Year: 1988
Model: Cherokee
Engine: AMC242
CA glue will break down in the heat, as will most grades of LocTite.
Use LocTite #272 - it's formulated for exhaust heat. And, make sure the little "dish-shaped" washer under the screw head has been replaced - it's there for a reason (the tension it provides will not only help to retain the screw, but it will also allow some expansion room for the different expansion rates between aluminum and iron.)
Torque to, I believe, 19-21 pound-feet.
Use LocTite #272 - it's formulated for exhaust heat. And, make sure the little "dish-shaped" washer under the screw head has been replaced - it's there for a reason (the tension it provides will not only help to retain the screw, but it will also allow some expansion room for the different expansion rates between aluminum and iron.)
Torque to, I believe, 19-21 pound-feet.
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