Sorry for the anorak info that follows!
1. To Lauren. The angle of my Minari gearbox is 0.4 degrees - clutch end down. ie. horizontal as near as makes any difference.
2. Gearbox capacities. Alfa themselves can't make up their mind how much a gearbox holds!
a. Alfa 33 Series 1+2 official workshop manual (the big white/red loose leaf folder) - 2.3-2.4kg 80/90 oil
b. Sud official specification (the thick green book) - 3.1kg 80/90 oil
c. Sud S3 owners handbook - 3.1kg or 3.4 litres 80/90 oil
d. 33 S3 owners handbook - 2.4kg or 2.6 litres 80/90 oil
e. Haynes Sud manual - 3.4 litres EP90 oil
I thought that Sud and 33 gearboxes were pretty much the same bar gearing and speedo mechanism. I got 2.8 litres in before it overflowed which matches neither set of figures.
Wow! that's quite a long list of conflicting requirements - and some specifications are measured by weight, not volume
Thanks for collating that lot together Mark!
I was using Mr Haynes as a reference, but I didn't stop to question whether the "fill up to the filler plug" statement was what the factory recommended, and if so, just how much oil that represents. Perhaps you are just supposed to put a measured 3.4 litres in and it doesn't reach the filler plug at all...
So your Minari is 0.4° nose-down? Interesting. Here are my final findings on the Green Machine...
So this is the Alfasud section drawing that was produced by the factory. You can see that the engine and transaxle are slightly nose-up in the car. I measured the angle relative to horizontal, and I get an angle of +2.29°
(arctan of 0.04, which is the slope as near as I can make out).
So next I need to know what the angle of the drivetrain is in my chassis. This is the most informative picture I have...
You can just make out that the bottom of the gearbox casting is just slightly
nose-up relative to the main chassis rail below it. I calculated this angle to be +1.79°
But the angle of my chassis
relative to the ground is shown below...
Handy piece of kit, I use it for measuring camber and castor angles normally. So my chassis is -2.5° (nose-down).
So when I add it all up my drivetrain is -2.5° - (-1.79°) = -0.71° (i.e. still nose-down). When compared with the factory driveline angle the difference is +2.29° - (-0.71°) = 3°
So that is how much I need to change my driveline angle to match the factory drawings. However, if I just want to replicate Minari, I only need to change by 0.3°
Who wears the anorak now???
Oh, before we leave the subject altogether, here is a picture of my offside driveshaft following my abortive run to Stanford Hall last week...
...And here is the nearside for comparison...
...And this is the mess it makes after 230 miles...
Would someone be able to measure the angle of their Alfasud engine in situ
on level ground? Perhaps measure using the top of the camshaft covers? I would really appreciate it!