More fresh air in the cab

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I would argue that you need to let out the air. The vent windows in later hard tops make a huge difference in flow-through air in the cab. When closed, you can open all sorts of vents, to mediocre effect - but when you flip out both vent windows, you get the ventilation you need.
 
Those scoops don't look half bad! A little spray paint on the clear plastic and you're GTG. Form follows function right?

I was looking at vintage air ducts and vents, and I could mount one or two directable air vents under the dash, fed from a duct going up to the air scoop. Might work?
Vintage Air Standard Series Louvers 49354-VUL

With a solid source of fresh air, and some way to exhaust it, I think it would work well. ...gotta figure out my air exhaust options, without busting out the sawzall :hillbilly:
 
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Might be a temporary solution but what about cracking open the hard top hatch ( if you have one and not the barn doors). I read this thread the other day and tried opening the hatch a few inches and locking it in place with the stock hatch struts. Stayed put, didnt rattle and although it wasnt the hottest day i imagine it will act as a decent vent..

Sliding cargo windows would be pretty awesome though.

D
 
I would argue that you need to let out the air. The vent windows in later hard tops make a huge difference in flow-through air in the cab. When closed, you can open all sorts of vents, to mediocre effect - but when you flip out both vent windows, you get the ventilation you need.

I agree. I tried lifting the back hatch on my 68 and resting it on the spare tire. Fumes from the exhaust were awful. Modified my hard top to have the side vent windows over thirty years ago. I put my 68 on it's side back in 75. In 76 I replaced the hard top with one of a 73. Weatherstripping was the same style as the 78 I got the vent windows from. Back them the other side glass pieces were cheap from the dealer. While I never tried it believe the later glass and weatherstripping fits the earlier sides just needs to match each other.
 
Thanks guys. I've tried opening the rear hatch and I get loads of exhaust in the cab. I see SOR has a sliding window conversion which would be perfect but it looks like it comes with tinted glass, which I really don't want, and is kind of spendy at $400. I'd probably do it if it wasn't for the dark glass.

Anyone know any other options to add sliding or pop-out side windows to the roof? BTW, my 40 is a '73, but the top is around a '68 or so with the inset glass. Not sure if that matters or not...
B.
 
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My solution is top off, doors off open air. A totally different experience. Bikini top if you need, and a jacket when it is cold.

One time I had an extra set of ambulance doors on my '76 that had no glass. The openings in the rear really helped with ventilation with the top on. Try opening up some exhaust ventilation in the rear and give your fresh air somewhere to go.

Almost year around fresh air with top off! I don't know why more LC owners don't pop the top?
 
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I changed my passenger rear facing exhaust outlet to a rear passenger side facing turn down tip. This really cut down exhaust fumes on my rig...
 
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