Date registered: Nov 2013
Vehicle: MY05 CLK55 AMG , MY05 CLK320,Former,C180 Kompressor,Jensen Healey,Ford Capri V6,Alfa GTV.
Location: Australia's East Coast
Mentioned: 2 Post(s)
Quoted: 297 Post(s)
Hi dgdrx ,
I would go with option B. Apply the sealant directly to the dent using your finger ,,filling it up to about 2mm above level for an inch or more in each direction ,,but not very thick on the side close the inside of the engine..you don't want to apply so much sealant that it may be squeezed out inside the engine.
Also apply a thin smear to the gasket sealing face where it will meet the damaged area.
Have the gasket already seated in the vc and ready to go on ,,,after you apply the sealant you want to fit the cover asap ,,,and then torque it in stages up to 8 Nm ,,,,,also asap.
That way the sealant cures in it's final position.
I have never used genuine MB sealant or Loctite 5970 which is the same thing ,,,,so I can't say from experience ,,
I do know that Dow Corning Silastic Gasket sticks very well and basically permanently to everything ,,rubber gasket and metal surfaces,,,I would have thought that 5970 would be the same ,but the advantage is that it is neutral cure ie,does not emit any acetic acid when curing ,,,and takes 25 mins to skin ,,which gives you plenty of time to apply it and torque it down.