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Re: WOT engine life?
What do you mean, wide open throttle under a load, like pulling a trailer uphill, or revving the piss out of it in neutral until it blows?
Most car engines are not designed for long periods of wide open throttle, generally. Most are not designed to, but there have been lots of smaller cars, (what we would consider to be underpowered, like VW Beetles from the 1950's) that are intended to go at full throttle all day long.
Lots of engines are designed for long periods of full throttle power under load, though. Marine engines, including those inboard models based on automotive engines can go all day at full throttle.
Same with engines in construction and farm equipment. Lots of truck engines, big and small can, too.
Personally, when towing trailers, I have driven the following engines: Chevy 2.8 V6's, Chevy 305 V8,s, Chevy 2.5 L 4 cyl, Ford 3.3 L straight sixes, among others at full throttle for more than an hour at a time. I kept the revs around 3000 rpm and fortunately they never overheated. I never noticed any ill effects.
However, if they had been a higher revving, higher output engines, they may well have blown up.
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