Motor mount lag bolts
- Thread starter RAD88
- Start date
And in addition to exactly the above, use a sealant under the flat washers to avoid the remote chance of having a long, undetected water leak getting into the wood around the threads and rotting the wood.
exactly right Ralph...
oh and its ok to screw them in with an impact but when you get close to bottoming out about the time the lock washer is compressing use and open end wrench to finish tightening as to not strip out the lag screws
I used the stainless with washers and locknuts. Drilled pilot holes and filled the with resin to protect the wood before before bolting the mounts down.
Rad,
I have a question pal.
Are you replacing the motor mounts with an exact replacement? Will the mounting holes match? What is the condition of the old holes? Are the threads intact? Is the hole dry with no evidence of water intrusion?
If unsure or if using different mount replacements & the hole spacing is different, make sure you have enough wood between the existing holes & the new holes. Say you have to drill new holes, if a 5/16" pilot hole needs to be drilled, hopefully you will have 5/16" wood between the edges of the holes. There is a rule of thumb that the minimum space can be half that @ 5/32" but because of torque forces pulling up on one side & pushing down on the other side, hopefully, you won't have to go that small.
Also, the exist. holes need be dry wood if reusing them. If not, this would need to be repaired first. Just make sure of the conditions first.
And yes, I would use S.S. lags. The guys nailed it here about caulking, flat & lockwashers.
CR
I have a question pal.
Are you replacing the motor mounts with an exact replacement? Will the mounting holes match? What is the condition of the old holes? Are the threads intact? Is the hole dry with no evidence of water intrusion?
If unsure or if using different mount replacements & the hole spacing is different, make sure you have enough wood between the existing holes & the new holes. Say you have to drill new holes, if a 5/16" pilot hole needs to be drilled, hopefully you will have 5/16" wood between the edges of the holes. There is a rule of thumb that the minimum space can be half that @ 5/32" but because of torque forces pulling up on one side & pushing down on the other side, hopefully, you won't have to go that small.
Also, the exist. holes need be dry wood if reusing them. If not, this would need to be repaired first. Just make sure of the conditions first.
And yes, I would use S.S. lags. The guys nailed it here about caulking, flat & lockwashers.
CR