by smudge » Tue Jun 30, 2015 11:15 pm
he sp1 inner (first friction into the basket) and outer are the same size as the other five but the friction material is different. The outer friction plate goes into the shallower locators but all discs are the same size. The sp2 inner friction plate has a larger internal diameter than the others to allow the upgraded anti judder springs to sit inside them, then the other plates on top with again the same size outer but made of a different friction material. With both the sp1 and 2 the friction material isn't noticeably different to the eye until it's soaked in oil then you can visually see a colour difference. You can put the sp2 clutch pack into the sp1 as they share the same basket. Hope this helps