79 gs 1000 question

[Guest]

Quick question I hope someone has an answer for;

my case is split for a rebuild, my question is, do I coat the ENTIRE surface with gasket compound, or just the perimeter. I do not remember if there was a coating on the internal mating points (ie oil passage in the center, bearing saddles, and such)

The rebuild manual says 'coat all sealing surfaces' but this to me is fairly vague. The only reason I see to coat the bearing saddles and other internal contact points is to match the potential gap that the compound may make. But this leaves it open for inaccuracy. As I write this, I am nearly convinced that only the outside needs the compound.

Hope someone can straighten me out.

Thank you in advance!

[Fjbj40]

Yes, all surfaces.

[Machine]

Thanks very much!

Do you happen to know why? (knowledge is power!)

[Fjbj40]

That's how it was when it came apart from the factory so that's how I do it.

However, in my trade, aircraft maintenance, all faying surfaces are supposed to have a sealant between them to prevent fretting corrosion. Sealing around the cylinder hold down studs will also prevent oil leakage/weeping.

[Machine]

Perfect.

Thank you again. I should have taken more pictures when I first took it apart.