Dude, it's a Honda. It's MADE to be flogged. Mr Honda liked it that way.

Ever ride a Honda Dream? Teeny little bike's engine had to be screamed to get anywhere. They screamed for years without trouble. How about the CB-750? Not only would it walk away from a Harley twice its size, it would keep going long after the Harley was wheezing blue smog. Remember the early US 4-wheel Hondas? Like 850cc engine, had to be flogged to keep up with US traffic, they did and they did so for years, some still cruising. And there are Honda engines turning concrete mixers (Honda makes special bike-like engines with slow-speed gearing for such chores), hard-hard work, year after year.

What could happen?

It could break instantly. Throw a rod. But Hondas don't do that.

It will wear-out "early". A hard quarter-mile pull may cause as much wear as a mile or two of normal driving. But there's a lot of miles in a good engine. Even my '79 Ford made 238,000 miles and was scarcely wheezing when gas-cost just got absurd. And it got that far only because it shrugged-off at least two accidents with lesser cars: mostly today, cars get crunched before their engines wear out.

In the long run, yes, you could "warp a piston". If you hitch a car engine to a heavy truck and start across Wyoming (the whole state is uphill and upwind), it may overheat and sieze up. That was certainly true of the 1960s US car engines: rated 400HP, and would really deliver 350HP for 5 or 10 seconds. But in medium truck duty they would fail at that power. So they used the big block with small pistons and smaller carb so it could never make 220HP, but would hold 200HP for months. A car can't hold full power for long without violating all speed limits, cars on public roads never use full power for long enough to warp pistons.

You didn't break it. You didn't warp nothing in a few seconds. Odds are the engine will not wear out before the body gets trashed.

That was fun. Do it again!