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svandamme svandamme is offline
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Join Date: Sep 2003
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Quote:
Originally Posted by kach22i View Post
Air Cooling - What It Is And Why It's A Thing Of The Past
https://www.carthrottle.com/post/air-cooling-why-its-a-thing-of-the-past/
The author of that article doesn't have a f'ing clue.
Such a title to an article.. and then completely not explaining or covering the real reason why it's a thing of the past : emission regulations.

They could get the power out of air-cooled. Porsche did that on their race cars.
And clearly the reliability was there as well, that's what Porsche was famous for.

But the one thing they couldn't get with Air-cooled is the improved emissions.

Especially due to the warm up cycle which is hard to control on air cooled
-bigger oil capacity
-cannot turn off the air cooling
-Higher design operating temp
-Bigger clearances when cold

Water pumpers don't have that problem
- Thermostat
- less oil to heat
- lower operating temp so tighter tolerances when cold

That means water pumpers are the only way forward due to emission regs getting stricter and stricter.. Something no amount of engineering could fix on aircooled engines.


So emissions (and that water pumpers are cheaper to make) are the real reason
not power or reliability

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Old 12-18-2020, 09:49 AM
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