Motor mounts e160, grease/loctite, yes/no?

[HORSPWR]

So I'm getting a bit of creaking and groaning going on, usually only when I get up on the pedals at slow speed with a fair bit of input (up a goat track). Sitting on the seat and cruising along it's generally as quiet as a mouse.

I was thinking of maybe pulling the motor bolts and whacking a bit of grease under the heads of the cap screws. The manual makes no mention of grease or thread locker so what's the go, what have others been doing when re-installing the motor mount bolts and does this usually solve the creaks and groans?

 

[Bonz]

So I'm getting a bit of creaking and groaning going on, usually only when I get up on the pedals at slow speed with a fair bit of input (up a goat track). Sitting on the seat and cruising along it's generally as quiet as a mouse.

I was thinking of maybe pulling the motor bolts and whacking a bit of grease under the heads of the cap screws. The manual makes no mention of grease or thread locker so what's the go, what have others been doing when re-installing the motor mount bolts and does this usually solve the creaks and groans?

I’ve greased mine a couple of times to quieten that creaking noise. Worked well. No problems after 6000k’s.

 

[Dewi]

Have greased bolts and contact bolt points between frame and motor on my Norco when a creak developed. Noise gone after grease was applied.

 

[Hadz]

Have greased bolts and contact bolt points between frame and motor on my Norco when a creak developed. Noise gone after grease was applied.

Had a similar annoying creak on my VLT, it was driving me mad, usually with weight on the right crank. Checked every bolt I could find for weeks. Ended up being the centre motor mount bolt behind the chainring. Grease / re-torque and noise gone.

 

[Mikerb]

Any fastener tightened to the correct torque should not need thread lock....provided the part that the fastener is tightened into is of the same material and shear strength. Using a thin layer of grease on the threads helps to ensure the correct torque is applied (otherwise friction between the bolt and female threaded part or nut can lead to a false torque reading).
The exception to that would be any fastener subjected to considerable vibration and then a medium strength thread lock is a good idea. Since the thread lock also lubricates the thread ( prior to drying) it also helps to ensure any torque setting applied is more accurate.
. Personally I would also use thread lock on fasteners secured into plastic since torque settings are invariably low and unless a plastic screw/bolt is used the mating materials are not of equal strength.