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Yes, all, please do chime in here and let's hope that cool heads prevail. (Rimshot)
I think the sainted engineers did have it pretty well figured. There's plenty of natural cooling in our engine compartments for a 70 hp engine.
When they went over 70 hp, they eventually punched another big hole in the deck lid - not because it looks better, but it was the right thing to do in a thermodynamic kind of way.
For their super-duper four-cam 130-hp wunder motor (which mostly ran in 80-100 mph airstreams and never had to stop for a light), they added an external oil cooler.
I also have a hole in the firewall and a fan behind that. It's not any cooler with the fan running, but I see no evidence the hole is a bad thing. The sainted engineers could drill no such hole, as they would have poked through into the passenger compartment.
I have an estimated 120 hp and an external oil cooler with fan. On a hot day, the engine is warmish but happy at a steady 4000, happier at 3500, and most happy at 3000. After 30,000 miles, there's no blue smoke, grunt feels about the same as new, and it hasn't developed a drinking problem.
Me neither.
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