Thread: Bus is overheating.

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John, is your electric fan mounted on a shroud panel to pull air through the entire radiator core? On the '33 there's an aluminum panel standing off the core an inch, with the fan mounted to the panel, and it works great!
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It's really congested on mine, and I doubt you have the aluminum radiator but looking at the top left you see that it's simply a piece of flat aluminum sheet with the four sides folded down about an inch, then the sides are folded out to form a bolting flange. The result is a box standing off the back side of the radiator about an inch, with a 16" hole cut in it for the electric fan. I neglected to turn on the fan power once, and after idling around for 5 minutes I glanced at my temp gauge and it was up well over 250F! Punched the power button, the fan kicked on high mode and I watched the temp gauge fall, back to the normal 185 indicated, 195F at the heads, in short order. Just a thought, if you've just got the fan surface mounted.