………….
The first thing might go unnoticed until you had used the brakes. Now imagine finding out that you have no brake assistance on the M1/25/20 when the traffic ahead suddenly stopped. By the time your brain has caught up, you're in the back of the car in front. At speed. ……
That happened to me on the A30 on my way to Cornwall many years ago. Flat out in my V8 Vitesse when I noticed the traffic in the distance braking to a standstill. I braked fairly hard but then heard a pop, and the brake pedal went solid. I did manage to stop but it was tight and a scary experience.
On investigation, the brake servo chamber had rotted at the join and the vacuum had blown a hole in it.
Not sure my underwear would have survived that failure!!
Even when working SD1 brakes were always crap (I'm sure Vitesse ones were better than standard though), I have memories of getting plenty of smoke from them when stopping (eventually) from motorway speeds in my younger days
I know the Met fitted different wheels so they could accommodate Jag XJS calipers which says it all really
Lizzie, can't say i've read every post on this thread but if not mentioned already, i'd tighten up the vac hose fitting to the plenum (17mm spanner on the inner fitting and 19mm on the outer - tighten the 19mm nut while holding the 17mm). There was a known fault with that pipe rubbing through from contact with the AC pipe if the spacer wasn't fitted, my first Omega suffered this which caused a slightly spongy brake pedal (but no problem pulling up the car in fairness) and diabolical fuel consumption.