Hi, just had the gearbox back from rebuild. I didn't send the bell housing so need o bolt it back together. I have 3 questions.
a. should I used something as a gasket sealer between the 2. It doesn't appear it had anything previously.
b. does anyone know the torque settings for the bolts. I assume FT
c. roughly how much gear oil do I need. I will need some for my LSD and I believe redline do one for both. is that correct?
What do people recommend.
Yes. Sealant between the assembled case halves and the bellhousing is required.
As mentioned previously, the input shaft seal is installed in the bellhousing face and gear oil can flow freely out of the case from a through hole, both bearings and the shift rod bores. I also recommend replacing the input shaft seal before re-installing the bell housing. Once the new seal is in place, it is advised to cover the splines on the input shaft with some kind of thin removable cover before sliding it into the new seal, as the rubber lips of the seal can easily be damaged by the shaft splines during installation.
As far as which sealant to use, Permatex Ultra Grey is a good all-around choice, but I prefer Permatex Anaerobic Sealant for this application.
The Alfa Romeo Shop Manual specifies the "Nuts securing the clutch bell housing to the half casings" are to be torqued to 17 thru 19 N-m, or 1.7 thru 1.9 Kg-m, or 12.5 thru 14 Ft-lb.
The first 3 photos show how I pushed the new seal into place without damaging the lips or outer flange by using a copper pipe fitting as an install tool. The large end of the pipe had the perfect diameter to fit between the seal lips and outer metal diameter, so it only put pressure on the flat metal base of the flange during install.
The last 2 photos show the gearbox before and after attaching the bell housing. Note the clear plastic covering I fabricated to protect the seal lips from the input shaft splines. The nice thing about Anaerobic sealant is that is does not cure until it is cut off from oxygen, so there is no need to hurry the assembly process.