sleeprr

Got the front struts that I replaced on my b4 90 and don't know the top strut mount nut torque spec....anyone care to tell me please???

sleeprr

I've gone from snug to really tight and it still ends up loosening....am I doing something wrong or should I be using the blue locktite?

Bruch

I can't imagine the top strut nut coming loose. It is a nylon insert type nut, right? they will wear out after repeated use, maybe you need a new one if its been on and of more than twice.

Are you sure the top mount bearing is turning freely? Maybe its frozen/gunked/rusty and thats whats causing the self-loosening?
Bruch

sleeprr

nope, they are new nuts and everything that should be tight is tight...just keeps coming loose....the pass side more than the drivers side but still.

sleeprr

anyone able to offer any info??

Lago Blue

This is using just an OEM strut top-mount, correct?

If so, is the slotted nut underneath done up tight (50 Nm) against the lower bearing race of the OEM top-mount first?

The very top nut then gets 60Nm.

I couldn't remember these torques so I just pulled these numbers from an S2 site, but they should be the same as yours.

That site:

http://images.google.ca/imgres?imgur...%3Den%26sa%3DG

Note: I no longer use the OEM strut top-mounts myself as they are so fragile and require such frequent replacement that their use is false economy.

I do agree with Bruch that a serviceable lock-nut should not loosen on you.
You could use blue loctite, but shouldn't have to.

Do you have this type of slotted nut tool to properly apply the torque to the slotted nuts (see photos)?

sleeprr

no i don't have the tool but i guess i'll have to go buy it, just hope I can tighten it without having the take the strut off the car...thanks for the help lago

dtompsett

Yes, you can tighten without taking the strut off. With the car on the ground, remove the top nut, and the big 'washer'... that gets you to the slotted nut.

sleeprr

yeah I figured it would be something like that. thanks.

sleeprr

fyi so anyone knows if they are searching, the specs are:
top strut nut (60Nm) 44ft/lbs
slotted bearing nut (50Nm) 37ft/lbs