I had an old 11 hp briggs that would seize when warm, itd cool off, id bust it loose with a pipe wrench, and run it another 15 minutes.
Back when there still was an Agricultural Engineering at the U of S (re-badged Agricultural and Bioresource Engineering for a lot of years, then renamed Biological Engineering and folded into Chemical Engineering/absorbed into Mechanical and Civil), the student society had an annual fundraiser called MotorBlast.
They would get ahold of a beater (bigger the beater usually, often temporarily 'donated' by a local wrecker) that was on paper still plateable. They would do any necessary quick repairs to get it short-term drivable and brush on a new coat of paint, that included the names of local sponsors. Some years the mods included eg: making a convertible by cutting the top off, putting straight pipe stacks out the rear deck etc. It would end up being a pretty good looking machine from 40 or 50 feet back!
For the next month or so it would be driven all over town, getting great visibility for the sponsors, and the students would be selling tickets. On each ticket, the purchaser would write a time, usually between say 2 and 20 minutes.
On the last day of spring classes, there would be a small parade, as the car was driven over to the University Bowl, where a large crowd awaited. The car was run up on ramps, then drained of oil. The crowd was pushed back to a safe-ish distance, and the engine was started, and then run at full throttle until it stopped (one way or another, for the first time). Donated prizes would then be distributed to the ticket-holders who had most closely called the time of engine death.
I had mixed feelings when I first saw this - the students were a motivated and close-knit group, and it was good to see them doing an ambitious and popular fundraiser, but I didn't so much like seeing a good engine ruined (I did kind of eventually make my peace with the fact that these beaters were pretty much on the way to the crusher and had by this a last hurrah and educated and entertained hundreds at their passing). On the other hand, it was undeniably educational and surprisingly variable.
Some of those engines were pretty tough and had a bit of wear that kept them turning for quite a while even when hot and unlubricated. Dodge 318s were typically engines that would last 10 minutes or more under these conditions. Some would eventually throw rods, while a lot would simply bog down and seize (throwing out some black smoke with their last gasp). More than one, after cooling down and having oil added, would start again, and be able to be driven off the scene.
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