I dunno about Landrovers but I did take the engine apart on my Suzuki Alto FX (3 cylinder 800cc engine on a small hatchback) and replaced the cylinder head gasket. I also found that tuning the engine myself usually produced better performance and higher fuel economy than the ghastly garage-style Krypton tuning. That was a car that had a distributor rather than electronic black box ignition.
You name it, I've repaired it - cameras, flashguns, lenses, cars, broken hammers, guns, sewing machines, calculators, computers, laptops etc. Basically anything around the house that goes wrong I fix. My wife laughs but by the time I've done the repair it has taken a lot less time than buying new or hiring somebody to do the job.
Now with the tiny electronics on the 5D & 10D I would rather send it to Canon

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