Exactly, no use going nuts about the specs. These units weigh ~1.5Kg more then the 75 5 lug discs I have today. Will hopefully be enough thermo mass for my little lightweigh (the car that is
![Wink ;)](./images/smilies/icon_wink.gif)
) even though the power will be higher.
This time I will add ducting to cool them too, something I haven't bothered with before.
Did some Clutch investigations yesterday for my upgrade + propshaft/driveshaft job.
Sometimes it's good to save some junk under the work bench...
The boys that will be the stars of the final assembly
Just a quick mock-up for reference, slinger not included in this pic.
The spline on the CV-flange is the right diameter but is one (1!) spline off...
Just making sure that the newly installed press works, and as you can see it quickly demonstrated that it can turn anything into junk in a hurry.
Further investigations showed that the casting is
really crappy, large contamination pieces and porosity beyond anything I've seen before. Not easy to spot in these pics though.
So why are these parts so difficult to pull apart? They don't go "snap" and then are loose like regular press fits.
Well, they probably had rattling issues (anyone who had a pinch-bolt issue knows this one) during the development phase and dicided to glue the flange spline interface, clearly visible in the pic below.
So why did the cover crack? Well, on the old units (this one being a -73 Alfetta) they glued the bearings too...
Notice the retaining ring in the cover.
The new ones also seem glued at first but I think it's just overflow from the spline because it's only at the end of the spline and not on the bearing surface, it also comes loose easily.
No retaining ring on this one.
The axle itself has evolved quite a bit too, old one at the top, new below.
Spline and pilot is different (same spline data though so everything is interchangeable), heat treatment is obviously different too. Notice the glue on the bearing surfaces on the old shaft.
Somewhere along the way they learned how to cast flywheels too, the old one on top of the new one. Notice the balancing holes...
The cracked cover turned out to be quite a feature in the end, inspection/measuring cut.
Interesting to see that the old covers had a small indentation for the emergency brake cable routing. None of the new ones have that feature, they even have a machining tab almost in that location to make it even tighter for the cable.
Just got a message that my intercooler has arrived, nice!
And btw, the correct procedure of removing the clutch axle without destroying anything involves blocks of wood and a large mallet.
![Smile :)](./images/smilies/icon_smile.gif)