This thread will not always be entirely about XMs. I hope that's OK Noz?
before we get to the XM, we firstly must speak of Xantias and Mazda RX-8 engines...
James (Hellrazor from the FCF) came up to see me today as both he and I needed to adjust ride heights, he on his Xantia and me on the XM. We discovered it is possible with care to drive either car up a pair of Halfrauds ramps. Ride heights were successfully adjusted in both cases and both of us noted what a difference having correct ride height makes to the ride...
We then freed off the disc retaining screws on the rear brakes of James's car so he can replace the badly worn discs. These screws had previously defeated him but a touch of heat did the job.
Chris570 (fellow ES9 XM V6 owner) and Liam (RX-8 owner) made an appearance clutching a massive impact gun to make an attack on the previously unmovable crank bolt on the RX-8 engine. They are tight and solidly loctited in and need strong measures to remove them.
It did nothing. The bolt remained unmovable. We tried heating it with propane until smoke issued from the crankcase. Still no go. Then I cracked out the oxy-acetylene gear and did as we had seen advised in some forum posts on this very problem - heat the bolt cherry-red.
This we did and it came off without a fight
Then we attacked the flywheel and it saw sense and it too gave up easily enough.
Twenty minutes later the engine was entirely in bits.
Here it is:
The news is not good. The engine is basically scrap. One of the main bearings on the e-shaft (crankshaft analogue) failed catastrophically. You can see the scores on the journal quite plainly and this allowed the shaft and rotors to flail around. Apex seals broke and worst of all the front rotor crashed into the side plate and has ruined it. In fact all side plates are badly worn.
This is the worst one:
In fact the only serviceable items are the things we thought would be wrecked - the rotor housings. Although not perfect they might just do another tour of duty but there's no way anything else in the engine will..
We're not sure what caused the failure. Possibly it ran out of oil..
Parts to rebuild would be more than a new engine... Liam is now wondering what best to do. Tomorrow we're going to measure up an ES9 engine as a possible transplant candidate...
To round off the day I investigated why the cruise control on the XM is not working. Good news is the bellows and vacuum system is fine as I've had the vacuum pump working. All supplies are present and correct so why it's not playing remains open to speculation. The ECU may be dead or the speed signal may be missing...
Which may account for why the gearbox is apparently unhappy...
More to follow...