Lets talk venting

I think that some louvering on the fenderwells might be a good thing. I am considering that. If you take out the whole fenderwell, you are gonna get a lot of gunk up in th eengine compartment. Maybe not an issue, but if you run in the mud....

 

You have headers, Dan?

An aluminum intake should not radiate any more heat than a steel intake unless the exhaust heat riser is blocked closed. The aluminum is more conductive, but that shouldn't affect radiation into the compartment - unless I'm missing something. You could block off the exhaust passage completely and be fine in your part of the country (I'd think) especially on a hobby car.

Compare your under-hood temperature to some other cars. I'd expect it's not that different, but it seems hot since there's no insulation on the underside of the hood like there is in a passenger car.

 

old dodge power wagon that i had was louvered in the fenderwell area from factory,gotta help,is there some way that you can vent the hood as so not to let rain in? that would make the most sense since heat rises

 

just a note,a 1969 chevelle i had got pretty warm as the insulation had fell out,felt pretty darn good when out bull s#@%ing with the guys on a sat night in the fall of the year

 

Complicated? Danstew? whats that? R)

seriously, I would try and maybe vent the inner lower fenders a bit more than normal and see if that does anything? have you measured the temp?

 

There ya' go! An oven thermometer would work. Tape it to the underside of the hood, and do the same in your passenger car. I'd expect underhood temps would be 150F or so. A surface at anything more than about 125F (50C) you can't keep your hand on for any more than a few moments.

 

Heck Dan just make lunch on your hood.

 

Not sure if it was for heat dissipation, guessing it is, but many flatty's were louvered on the inner fender wells. Just some simple louvers help a lot as it allows the "dead" air in the engine compartment start flowing out. Nickmil

 

Geezz Dan,
It was 95 degrees in the shade on the trail everything was hot.
Didn't you let all the heat out when you flopped it on its side??
Sorry, just had to rib you some.
Donnie

 

You could also try using some hood insulation. To cut down on on cooking the bottom side of your hood.

 

Realize too that when your wheelin, your not getting the air flow through your engine compartment like you are when driving down the road, so it normally would tend to get hotter.

I think a stronger or another type fan or the louvers would be your only options.

I think too, that insulating would only make it worse. Its going to want to hold the heat in. Right now, your hood and fenders are acting as a heat sink to get the heat away from the engine. Insulation may make the hood/fenders cooler to the touch on the outside, but inside, it may make your engine bay even hotter.

 

NACA duct/scoop....maybe small ones on the side of the hood....like portholes on a Buick. Just remember three portholes if it's six four if it's an eight cylinder........seriously would move a good bit of air in/out. I put acouple on a 924T I had years ago just for same reason you want to on the "Bus" and it lowered the underhood temp signficantly.