Dash leak into cab

[Red383]

Does anyone have any recommendation on putting a cover on the cowl to keep water and debris out. Thanks.

Donnie

U wont keep water out, but I've seen aluminum window screen used under the cover.

I'm also interested in seeing how people attach a screen to the bottom of the cowl vents. I had mine all cleaned out and was just cleaning leaves out again this week. Damn trees!

[dodgeboykim]

Does anyone have any recommendation on putting a cover on the cowl to keep water and debris out. Thanks.

Donnie

U wont keep water out, but I've seen aluminum window screen used under the cover.

I'm also interested in seeing how people attach a screen to the bottom of the cowl vents. I had mine all cleaned out and was just cleaning leaves out again this week. Damn trees!

I used stainless steel screen cut to fit under cowl cover held in place by it and screws. Wasn't hard.

[sweatybetty]

[/quote]Only if the mice don’t have teeth. The oval flap on mine has been chewed through by what could only be mice.[/quote]
Same problem here. They were nesting in the heater box. I put some 1/4" hardware cloth over the holes. Mice cant chew through it and it still drains fine.

[BigBlockTrucks]

Only if the mice don’t have teeth. The oval flap on mine has been chewed through by what could only be mice.[/quote]
Same problem here. They were nesting in the heater box. I put some 1/4" hardware cloth over the holes. Mice cant chew through it and it still drains fine.
[/quote]

I haven’t checked the heater box yet but they have already been in the cowl to make nests. Best thing I have done so far is, I got a cat from the local farm! I put him in the garage one night per week. Same goes for the other garage The mice like to live here anymore.

[Isuzustorm]

Is this why most trucks have rust holes at the body line of the cabs by the hoods??

[PwrWgnDrvr]

Yup

[Isuzustorm]

Is there a simple way to repair this spot? I have looked for some panels without much luck. I will be looking to make my own if all else fails.

[sixpak340]

Does anyone have any recommendation on putting a cover on the cowl to keep water and debris out. Thanks.

I picked up an extra cowl top, I want to try sealing the vents from underneath & smoothing the top for no more vent.

I am good in the heat though, windows down & vent windows open.

I do not need under dash vents.

[martincom]

I picked up an extra cowl top, I want to try sealing the vents from underneath & smoothing the top for no more vent.

I don't what part of the country you live in, but if it is anywhere where the temperatures get low, say less than 40F, you'll have trouble with the windows fogging up. When we breath, our air exhale has a high moisture content. It doesn't take long for all the cab air to have a high moisture content. This, in turn, will be begin to condense on the cold glass, causing it to fog up.

This is why cab heaters bring in fresh air, to change out the high humidity air we exhale and prevent the cab windows from fogging up.

[sixpak340]

Condensation is not a concern for me?

An open window can let any moist air out.

My hometown averaged 13 feet of rain a year, so I have decades of experience with vehicles in a wet climate.

[sixpak340]

Double post.

[Wildergarten]

This is why cab heaters bring in fresh air, to change out the high humidity air we exhale and prevent the cab windows from fogging up.

We've exchanged thoughts on vents for closing doors. Is the pressure from the heater sufficient to force air out that type of vent for purposes of keeping relative humidity under control?

[sixpak340]

Under motion an open window, even partially open will create a vacuum in the cab, pulling air out.

The most important step in controlling in cab humidity is to eliminate all leaks.

[PwrWgnDrvr]

Under motion an open window, even partially open will create a vacuum in the cab, pulling air out.

The most important step in controlling in cab humidity is to eliminate all leaks.

Any air out MUST be replaced by air in, from somewhere.
Yes, leaks are way bad. But when its raining outside (humidity around 100%), it accomplishes nothing to bring outside air in. Getting into the cab with rain damp clothes, shoes, maybe a soaked umbrella, you are in a swimming pool of water vapor.

[sixpak340]

The Subaru is for rainy days.

It has an outside air source -or- hit a button and it only processes in cabin air.

An inside only heater can be McGuivered in, no biggie.

I have enough respect for decodes old vehicles to avoid rain as much as possible.

[martincom]

We've exchanged thoughts on vents for closing doors. Is the pressure from the heater sufficient to force air out that type of vent for purposes of keeping relative humidity under control?

On these older vehicles, there is enough air leakage around the door glass and other areas to exhaust the volume the blower motor can produce. For example, if you leave the blower motor off and have the defroster duct open, you'll free air through them, when at speed, with the vehicle. If there wasn't a place for the air to escape, that wouldn't be the case. With a newer vehicle that is sealed up much tighter, I wouldn't be surprised if air displaced by the blower was being exhausted out the cab vents w/check flappers.

Any air out MUST be replaced by air in, from somewhere.
Yes, leaks are way bad. But when its raining outside (humidity around 100%), it accomplishes nothing to bring outside air in. Getting into the cab with rain damp clothes, shoes, maybe a soaked umbrella, you are in a swimming pool of water vapor.

True enough. However, when it is raining that hard, the outside air temp is usually much warmer. In turn, the glass is not as cold and condensation, typically, does not occur. Not to say it can't, but not often. It is why every auto I've ever owned that had factory AC, the AC runs when the defroster is activated. Bringing warm, high humidity, air across a cold evaporator coil will result in a large percentage of that humidity condensing on the evaporator coils. This results in the warm air being blown out the defroster vents having low humidity and quickly evaporating any condensation on the glass. I've ran the AC with the heater, in the winter, when I've had a lot of passengers in the vehicle. This quickly eliminated any window fogging and prevented it from re-occurring.

[Wildergarten]

On these older vehicles, there is enough air leakage around the door glass and other areas to exhaust the volume the blower motor can produce. With a newer vehicle that is sealed up much tighter, I wouldn't be surprised if air displaced by the blower was being exhausted out the cab vents w/check flappers.

Thx, and it's a fairly wimpy blower by modern standards. I'm still contemplating adding the cab vents. Plenty of time for pondering that when the truck project just sits during weeding season. All I'm expecting to get done this year is the bed painting, underbody boxes, etc, and the driveline. There's logging to do this summer.