Quote:
Originally Posted by Dadhawk
Actually no, isn't an issue. Subaru boxer engines are often used in applications where they are run at 80% to 90% of power most of their lives. For example, many experimental aircraft use Subaru auto engine conversions with no issues where they run wide open constantly. This is usually after having seen life in a car first, then being rebuilt.
Even if used for pure track use, you are not likely to stress the engine that much.
Honda and GM Corvair engines are also often used for this purpose.
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Quote:
Originally Posted by Sapphireho
I have a Honda v6 outboard motor on my boat that will just hum at 6k rpm all day long.
I take my twin up to redline all the time. It just gets there a bit faster now than when I first bought it.
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This is a rehash of the whole "don't drive around at 4.000 rpms you will wear your engine out faster" thread.
Most gas engines are designed to operate at high RPMs. Their oiling and cooling can deal with it with no issue. Any "increase" in wear by running consistently at high RPMs over the life of any engine is so small that it is meaningless.
What engines don't deal well with is frequent extreme and abrupt changes in RPMs especially if you go into a sudden over/max rev situation. An engine can go forever at redline but one sudden change from 1,000 RPM to 7,500 RPM could cause irreversible damage.
I find it fun that on a forum where people love to boost their engines, change tunes, run high grade fuels, etc there are so many that are worried about the "damage" driving at high RPMs will cause.