As part of my ongoing 5-speed conversion, I am thinking I want to toss the Teves III over the hedge and go back to the 88-earlier vacuum booster / master cylinder set up. The III is not really rebuildable, probably dangerous due to age or design, and I need an accumulator ball which is $300. And I don’t really care about anti-lock, so I am not interested in going to the cost/hassle of converting to Teves IV.
I have a Teves III pedal box with a clutch pedal, so I’ll fab an adapter plate that will allow me to bolt the vac booster to the front of that pedal box. Questions for the group:
Does anyone have a template or measurements for the base of the vacuum booster, i.e. location of studs and center hole? There is a gasket that goes in there, “Seal - Base C39597” that would be perfect, but they seem to be unobtanium despite what the internet says. I’d like to mock up a bit before committing to purchasing the actual vac booster.
Do I really need the vac reservoir tank? Most other cars don’t have them, and it seems like the v12 should pull plenty of vacuum with the butterflies closed… but Jag put the reservoir in for a reason. Does anyone have any real-world experience with removing the reservoir? I guess I could build without and then add later if I am not happy.
Is there a proportioning or front/rear bias valve? Most cars have them, my parts manual does not show one.
What else am I not thinking about?