Thread: Holes in the hood

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First put the shroud on, and get your air flow through the radiator addressed. If you're still having a problem, then you might consider the port holes, but they will be more for looks than for function. If you have a properly sized radiator, proper t-stat, and a good shroud you should not have cooling problems.

Thanks Roger. First thing in the morning ill install the shroud. Then go from there.

Originally Posted by choppedchevy

Thanks Roger. First thing in the morning ill install the shroud. Then go from there.

Saturday morning in Des Moines I stopped to get my Good Guys registration info, and when I lit off the '33 I hit the start button, but apparently failed to energize the "Acc" button - I have a two button start, relay based system. As I was idling around the fairgrounds trying to get to the Homebuilt Heaven area I looked down and noticed no gauges, and quickly noted that my ACC button was dark. I quickly hit the ACC button, and panicked when my Water Temp Gauge went to 240F with the ECU showing me water temp at the head of 248F - no fan running, idling in traffic. I watched the ECU display, and within less than a minute it was 231F, then continued to fall at a relative fast rate through 203F, then 192F still idling. My point is that if your components are sized right, with a good shroud that forces all of the fan flow through the radiator core then you should be OK without cutting holes in things. Sure, mine's a hiboy with no hood sides, but I think it's applicable.

Thanks guys for all the advice, i installed the shroud, i took it for a drive. It stayed at 195 the entire time. let it idle for 30 minutes no problem. I did put vents in the hood. After shut off the temp rose to 200 then cooled down fairly quick. A lot better then it has been. Again thanks everyone. Don