Just to make you feel better, Andrew, I'm going through grief with the Aero. Having noticed a split CV joint boot (and ordered a new one) just after Goodwood, I didn't drive it for a week. Then drove it a few miles last weekend and heard a grinding noise. Immediately suspected that perhaps we'd done the 200 mile blast around Goodwood with no grease in the joint, so bought a new joint. Tried to fit it on Wednesday, but:
a) found the real reason for the grinding noise - the wheel bearing was completely shot (rusty and falling apart).
B) damaged the inner joint while ham-fistedly removing the driveshaft (don't ask...)
Bodged it back together enough to drive the car into the garage and ordered a wheel bearing and new inner joint.
Yesterday, had another go. Fitted the wheel bearing and the outer joint. Then found the inner joint was the wrong one. Couldn't get another on a Saturday. Problem was that one of the bearings on the tripod had come apart and emptied the needle rollers into the housing. I recovered as many as I could find and dismantled the new joint to make up the shortfall. Good job, I reckoned.
Put it all together and went for a scrub-up. Then off for a test drive. Grinding was gone, but coming off my "road-test" roundabout under heavy throttle in 2nd gear, the inner joint exploded with a bang and I just managed to coast into a petrol station, where the car has been since and will remain until I can tow it home tomorrow.
Having gone back for another look (and to remove the rear towing eye so I can fit it to the CSE for tomorrow), as well as the rubber boot being history and parts of the inner joint being visible on the subframe, the housing of the joint has popped out of the diff housing a bit. There is a very slow drip of transmission fluid from there, which I'm hoping is just because the joint housing isn't all the way in to make a good seal. I hope.
My current theory is that there was a needle roller still lurking in the housing which jammed the joint. I'll be trying to get a complete assembly including the housing for plug'n'play convenience.
I'd gladly trade having to replace a water pump and lens for the mess I may be about to face. While I'll certainly try my hardest to have the car ready for the lakes, I fancy your chances more.
P.S. Anyone know where I can get a driveshaft assembly (complete with inner driver housing) for a '96 Aero manual in the next day or so? I believe any from a '94-on B234R, B234L or B204L will fit if it's from a manual car. i.e. any '94-on full pressure turbo manual. I believe the inner joint housing is handed, so I need a LH one.
I'll be trying the usual suspects (Two-stroke, et. al.)
Also, anyone know what fluid Abbott put in the transmission (I'll be asking Giles tomorrow) and where I can get some in a hurry, or something easily obtainable that will safely mix with it?
Aaaarrrrgggghhhh!