In article ,
mm0fmf wrote:
On 03/07/2020 14:07, Dave Plowman (News) wrote:
for late Rover SD1

Good man. I had an SD1 V8 on a V-plate. Great when working but not the
world's most reliable car. It was always the minor stuff that failed.
Mine had a long term oil leak resulting in the base of the car being
continuously rust proofed. Floor and sills was in perfect condition but
the arches and door bottoms decayed in front your eyes. It did about
175k miles before the engine started making expensive noises such that
it was cheaper to put a 50k mile lump out of a rear-end collision in it.

Mine is over 200,000 and still going strong. Has had a cam change, though.

Is the potting similar to what is used around the window motors? All
four of mine eventually failed. The potting compound was not 100%
impervious and if you didn't use the windows all the time, the motors
eventually seized. It was a bugger to cut off but you just needed to
get enough off that you get some WD40 the lubricant in to free off the
motor and gears etc. I did all four and never resealed. I took the door
cards off every 6months and squirted WD40 in to lube them up.

Oddly, the motors themselves seem pretty reliable. But not sure if yours,
being an S1 had the same as the S2. The control for the window motors was
very different on S2 cars.

From memory there was a capacitor that was charged up, took a few
seconds, that was used to drive all the door solenoids. Simple way of
limiting the current and hence dissipation in the locking solendoids.

Again, that was the early central locking. Later cars used motors rather
than solenoids. In some ways a retrograde step, as there was no motor in
the drivers door. That's where the controller is. Making remote locking
impossible without modification. Mine is totally non standard with newer
more powerful motors, my own design controller, and remote locking.

--
*Growing old is inevitable, growing up is optional

Dave Plowman London SW
To e-mail, change noise into sound.