It’s either a toyota or a nissan engine ( can’t remember which one ) that was purpose built for the London Cab TX1 model that was manufactured in Coventry. Doesn’t, or didn’t, go into any other vehicle.
But as I mentioned, the '51 plate (2001) was the last year they made those engines as the company decided they were now GREEN and did not want to be associated with the typical image of a cab with the big smokey diesel engine.
So it was replaced by a modified Ford Transit engine for the TX 2 model. Great engine in a Ford Transit, total sh*t in a London Cab. Only lasted until '06 plate ( 2006 ). Then replaced by some Chinese thing for the TX4 model. ( the more observant of you have just asked yourselves, “What happened to the TX3?” Good question. They never made one. Don’t know why)
Anyway, the early TX4’s engine had the confidence inspiring habit of bursting into flames. So what was the answer? Did they recall all vehicles? No, believe it or not they fitted a sprinkler system to the engine compartment. I sh*t you not.
If you went to view a £30,000 vehicle, and then discovered it had a sprinkler system fitted to it, and it wasn’t a crop spraying machine, would you buy it??
So that is why it is becoming so hard to replace parts for the pre 51 engine. Original manufacturer doesn’t make them anymore. London taxis is now owned by Geely, a Chinese company and all production was moved from Coventry to China not long ago. So now we get the cheaper Chinese version of the spares.
So that fact that the older cabs are so good, and the newer ones are not very good, means drivers tend to hold on to the older models until they die.
Believe it or not, at 500,000 miles, mine WAS still considered a run in. I think that engine is usually, with regular servicing, good for about 8 or 900,000.