G: Gearbox (Twin) Gearbox cover boss
- Thread starter Cyborg
- Start date
face of the cover to the top of the lug is 0.540" and the height of the lug in the cover is around 0.250" so not very high.......Cheers...... Greg.
Thanks Greg, much appreciated. I can lay down a couple of beads with the TIG…. hopefully without any issues.
I bead blasted the cover, which I normally wouldn’t do, but this one needs some help and will be painted anyway. Bead blasting was followed with a session in the oven just to see what would come out of it. The cover is quite porous compared to others I have seen. I was surprised at the amount of oil that came out of it considering it’s an outer cover and wouldn’t normally see that much oil.
I bead blasted the cover, which I normally wouldn’t do, but this one needs some help and will be painted anyway. Bead blasting was followed with a session in the oven just to see what would come out of it. The cover is quite porous compared to others I have seen. I was surprised at the amount of oil that came out of it considering it’s an outer cover and wouldn’t normally see that much oil.
I measured the height of the boss on the "I've been in pieces since 1955 Rapide" and the top of the boss is still very clearly "as cast" and it measured 3/8 high. Next time out i can measure down from the face if you like! maybe even take a picture.......
A little higher might be better if the G83AS is shifted left (recessed into that new French G50)? Not sure if that makes sense. I have 2 covers and both are beat up in that area. Because the G86 spacer was too narrow or worn? Just guessing because I don’t have all the bits in front of me.