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Reply to "Need input from IM owners"

 

My engine is a mild two-liter.

I have a VS with the hole through the firewall and a fan behind the hole that pushes even more air into the engine compartment. (I didn't know if this was going to help or not - I did it in the interest of Science.)

I also have a Setrab fanpack in the driver wheel well, but NO Mocal sammich, so the cooler is always in the loop. And the cooler fan is on a manual switch (no thermostat), so I know exactly when it's on and can watch the effect on the temp gauge.

Turning on the cooler fan makes a big difference. You can see the temp drop on the gauge, usually within a minute or two.

I turn the fan on when the temp reaches mid-gauge, which I think is about 200 F. I don't think I could comfortably run this engine in this climate without an external cooler. When ambient temps are below about 70F, I don't need the cooler fan, but by 75F, I definitely do. Even on 90-plus degree days, the cooler keeps temps just slightly above mid-gauge - probably about 210F.

For me, the cooler fanpack is like 'all-weather' protection. I can go anywhere in any heat, get stuck in any traffic, and still know it's not gonna overheat. I could probably get by without it on most days, but then I'd be a lot more stressed, even if the engine might not be.

Life's too short not to have an external cooler.

 

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