Pre-Power Stroke Diesel (7.3L IDI & 6.9L)Diesel Topics Only
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Basically, yes the front grill area is generally a high pressure area and so is the cowl area. If we were to site our intakes as close to the center of the grill that is actually the highest pressure air. I'm not really big on cutting that area and that's why I'm thinking cowl. There's another article on autospeed I think about tufting the body of the car. From what I remember the location of those fender intakes is not a smooth air area and while it might be a convenient and cool looking way to do it, might not be the most efficient. I did think about that, and also thought maybe adding a scoop intake with a naca duct near the center front of the hood. The design is to scoop air and it would be a 4" straight, short shot into the intake. I believe this would be the most efficient way to get cold air into the intake. And if I can find a scoop in the junkyard and fab it into the hood it would be one of the best designs but I'm not sure I want that hanging off the front of my truck. I may try and test using that air pressure switch. The cowl is the least intrusive while providing the most air flow.
Someone on this thread asked about adding a second hose to their NA air cleaner. In race cars I've seen it done where you just cut an hole into the side, and rivet an aluminum flange from the inside. Easy way to get more air into a stock cleaner which is important for racing rules.
Just thinking out loud, any other ideas are appreciated.
I like the idea and thought of the snow/ice problem as well. My solution would be to switch back to the stock style intake for the winter, especially since slow and steady is the name of the game here where they clear the roads once during the year in the spring to make the roads dry faster, otherwise all winter the road is a thick sheet of ice, and mpg doesnt matter this time of year either since the truck needs to idle half an hour before it's warm enough to drive.
1993 F350 crew cab 7.3 IDI ,ZF-5, 2WD
All original, no mods
that's what i had planned.but iv found it not to be an issue at all.
simply wipe the snow off hood/windshield like always,and nothing really falls into the cowl holes.iv been running it hooked up all winter so far.
♠ Log Truck: '93 F-Super Duty (F450) XLT 1st Gen Navistar 444ci IDI Diesel w/ Intercooled 2nd Gen Banks Sidewinder Turbo, E40D, 5:13, Dually, 16' Dump & Auto Crane ♠
♠ Chip Truck: '93 F250HD XLT 4x4 1st Gen Navistar 444ci IDI Diesel w/ Intercooled 2nd Gen Banks Sidewinder Turbo, E40D, 3.55, Dually, 9' Dump, & Plow ♠
I'm still not convinced that water isn't going to get into the intake using the cowl in the event of the drain holes becoming blocking with dirt and debris. Isn't their even the slightest risk of water collecting in this area and getting sucked into the intake?
1987 6.9 IDI Jasper rebuild in a 1983 Ford F250 , 4 speed (T19) manual
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